Chat 1 Internet 2 Bussines and finance 3 Energy 4 IT 5 /. Slashdot 5 100B-FX 100BASE-FX 5 100B-T 100BASE-T 5 100B-TX 100BASE-TX 5 100BVG 100BASE-VG 5 10B-F 10BASE-F 5 10B-FB 10BASE-FB 5 10B-FL 10BASE-FL 5 10B-FP 10BASE-FP 5 10B-T 10BASE-T 5 10B2 10BASE-2 5 10B5 10BASE-5 5 1GL First-Generation Programming Language 5 1NF First Normal Form 5 286 Intel 80286 processor 5 2B1Q 2 Binary 1 Quaternary 5 2GL Second-Generation Programming Language 5 2NF Second Normal Form 5 386 Intel 80386 processor 5 3GL Third-Generation Programming Language 5 3GPP mobile broadband "3G" Partnership Project 5 3NF Third Normal Form 5 486 Intel 80486 processor 5 4B5BLF 4 Byte 5 Byte Local Fiber 5 4GL Fourth-Generation Programming Language 5 4NF Fourth Normal Form 5 5GL Fifth-Generation Programming Language 5 5NF Fifth Normal Form 5 6NF Sixth Normal Form 5 8B10BLF 8 Byte 10 Byte Local Fiber 5 AAA Authentication Authorization, Accounting 5 AABB Axis Aligned Bounding Box 5 AAC Advanced Audio Coding 5 AAL ATM Adaptation Layer 5 AALC ATM Adaptation Layer Connection 5 AAQS Ambient Air Quality Standards (environment) (US) 4 AARP AppleTalk Address Resolution Protocol 5 AAU Assigned amount units (measurement) 4 ABAC Attribute-Based Access Control 5 ABCL Actor-Based Concurrent Language 5 ABF Aquatic Base Flow (Hydropower) (electricity) 4 ABI Application Binary Interface 5 ABM Asynchronous Balanced Mode 5 ABR Area Border Router 5 Auto Baud-Rate detection 5 Available Bitrate 5 Average Bitrate 5 ABT Availability based tariff (electricity) 4 AC Alternating current 4 Acoustic Coupler 5 Alternating Current 5 ACA Annual Charge Adjustment (electricity) 4 ACD Automatic Call Distributor 5 ACE Area Control Error (electricity) 4 Advanced Computing Environment 5 ACEEE American Council for an Energy-Efficient Economy 4 ACID Atomicity Consistency Isolation Durability 5 ACK ACKnowledgement 5 Amsterdam Compiler Kit 5 ACL Access Control List 5 2 Active Current Loop 5 ACM Association for Computing Machinery 5 ACME Automated Classification of Medical Entities 5 ACP Airline Control Program 5 ACPI Advanced Configuration and Power Interface 5 ACR Allowed Cell Rate 5 Attenuation to Crosstalk Ratio 5 ACRS Accelerated Cost Recovery System (finance) 4 AD Active Directory 5 Administrative Domain 5 ADB Apple Desktop Bus 5 ADC Analog-to-Digital Converter 5 Apple Display Connector 5 ADCCP Advanced Data Communications Control Procedures 5 ADITC Accumulated Deferred Investment Tax Credit (policy) 4 ADO ActiveX Data Objects 5 ADR Asset Depreciation Range (finance) —Alternative dispute resolution 4 American Depositary Receipt 3 ADSL Asymmetric Digital Subscriber Line 5 ADT Abstract Data Type 5 AE Adaptive Equalizer 5 AEP American Electric Power (electricity) 4 AES Advanced Encryption Standard 5 AESO Alberta Electric System Operator 4 AF Anisotropic Filtering 5 AFE Authority for Expenditure or Authorization for Expenditure 4 AFP Apple Filing Protocol 5 AFUDC allowance for funds used during construction 4 AFUE annual fuel utilization efficiency 4 AFV Alternative fuel vehicle 4 AGA American Gas Association 4 AGC Automatic generation control 4 AGD Associated Gas Distributors (US) 4 AGP Accelerated Graphics Port 5 AH Active Hub 5 AI Artificial Intelligence 5 AIMA Agricultural Impact Mitigation Agreement (US) 4 AIX Advanced Interactive eXecutive 5 AJAX Asynchronous JavaScript and XML 2 AL Active Link 5 Access List 5 ALAC Apple Lossless Audio Codec 5 ALGOL Algorithmic Language 5 ALJ Administrative law judge 4 ALSA Advanced Linux Sound Architecture 5 ALU Arithmetic and Logical Unit 5 AM Access Method 5 Active Matrix 5 Active Monitor 5 Allied Mastercomputer 5 Amplitude Modulation 5 AMBO Armenia, Macedonia, Bulgaria Oil pipeline 4 AMD Advanced Micro Devices 5 AMI Advanced metering infrastructure 4 AMOLED Active-Matrix Organic Light-Emitting Diode 5 AMQP Advanced Message Queuing Protocol 5 AMR Automated meter reading also known as Automatic Meter Reading 4 Audio Modem Riser 5 AMRA Automatic Meter Reading Association 4 ANGTA Alaskan Natural Gas Transportation Act of 1977 to build the Alaska gas pipeline 4 ANGTS Alaskan Natural Gas Transportation System 4 ANN Artificial Neural Network 5 ANSI American National Standards Institute 4 5 ANT Another Neat Tool 5 AOP Aspect-Oriented Programming 5 AOS Authorized Overrun Service 4 AP B[edit] BAU – Business As Usual 3 Access Point 2 APA Administrative Procedure Act —Alaska Power Administration 4 APCI Application-Layer Protocol Control Information 5 APE Area of potential effect (electricity) 4 API American Petroleum Institute (oil) 4 Application Programming Interface 5 2 APIC Advanced Programmable Interrupt Controller 5 APIPA Automatic Private IP Addressing 5 APL A Programming Language 5 APPA American Public Power Association (electricity) 4 APR Actual peak reduction (e.g. in demand response systems) (electricity) 4 Apache Portable Runtime 5 AQCR Air Quality Control Region (US) (environment) 4 ARA (in shipping) ports of Amsterdam – Rotterdam – Antwerp (oil) 4 ARC Adaptive Replacement Cache 5 Advanced RISC Computing 5 ARIN American Registry for Internet Numbers 5 ARM Advanced RISC Machines 5 AROS AROS Research Operating System 5 ARP Address Resolution Protocol 5 ARPA Address and Routing Parameter Area 5 Advanced Research Projects Agency 5 ARPANET Advanced Research Projects Agency Network 5 ARR Auction Revenue Rights (electricity) 4 AS Access Server 5 Autonomous System 2 ASCC Alaskan System Coordination Council 4 ASCII American Standard Code for Information Interchange 5 ASE Alliance to Save Energy 4 ASET Automated Security Enhancement Tool 5 ASG Abstract Semantic Graph 5 ASIC Application-Specific Integrated Circuit 5 ASIMO Advanced Step in Innovative Mobility 5 ASLR Address Space Layout Randomization 5 ASM Algorithmic State Machine 5 ASMP Asymmetric Multiprocessing 5 ASN.1 Abstract Syntax Notation 1 5 ASP Active Server Pages 5 Application Service Provider 5 ASR Asynchronous Signal Routine 5 ASSP Application-Specific Standard Product 5 AST Abstract Syntax Tree 5 ASTM American Society for Testing and Materials 4 AT Advanced Technology 5 Access Time 5 Active Terminator 5 ATA Advanced Technology Attachment 5 ATAG Authoring Tool Accessibility Guidelines 5 ATAPI Advanced Technology Attachment Packet Interface 5 ATC Available transfer capability 4 ATM Asynchronous Transfer Mode 5 ATX Advanced Technology eXtended 2 AVC Advanced Video Coding 5 AVI Audio Video Interleaved 5 AVR Automatic Voltage Regulator (electricity) 4 AWK Aho Weinberger Kernighan 5 AWT Abstract Window Toolkit 5 Acc. Accession countries (to the European Union) (government) 4 Acronym Lists of abbreviations References[edit] Notes[edit] "Technology Acronyms and Abbreviations". All Acronyms. Retrieved 2008-11-27. "Energy Information Agency list of acronyms". Energy Information Administration. Retrieved 2008-11-27. "Federal energy regulatory commission- Help- acronyms". Federal Energy Regulatory Commission. Retrieved 2008-11-27. "World energy, technology and climate policy outlook- list of acronyms" (PDF). European Commission. Retrieved 2008-11-27. "Distributed Power Generation in Europe: technical issues for further integration- list of acronyms" (pdf). European Commission. Retrieved 2008-12-01. Retrieved from "https://en.wikipedia.org/w/index.php?title=List_of_energy_abbreviations&oldid=729623729" Categories: Lists of abbreviationsTechnical communicationEnergy-related lists Navigation menu Personal tools Not logged inTalkContributionsCreate accountLog in Namespaces Article Talk Variants Views Read Edit View history More Search Navigation Main pageContentsFeatured contentCurrent eventsRandom articleDonate to WikipediaWikipedia store Interaction HelpAbout WikipediaCommunity portalRecent changesContact page Tools What links hereRelated changesUpload fileSpecial pagesPermanent linkPage informationWikidata itemCite this page Print/export Create a bookDownload as PDFPrintable version Languages Add links This page was last modified on 13 July 2016, at 13:44. Text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. Privacy policy About Wikipedia Disclaimers Contact Wikipedia Developers Cookie statement Mobile view (window.RLQ=window.RLQ||[]).push(function(){mw.loader.state({"ext.globalCssJs.site":"ready","ext.globalCssJs.user":"ready","user":"ready"});mw.loader.load(["mediawiki.action.view.postEdit","site","mediawiki.user","mediawiki.hidpi","mediawiki.page.ready","mediawiki.searchSuggest","ext.eventLogging.subscriber","ext.gadget.teahouse","ext.gadget.ReferenceTooltips","ext.gadget.DRN-wizard","ext.gadget.charinsert","ext.gadget.refToolbar","ext.gadget.switcher","ext.gadget.featured-articles-links","mmv.bootstrap.autostart","ext.visualEditor.targetLoader","ext.wikimediaEvents","ext.navigationTiming","schema.UniversalLanguageSelector","ext.uls.eventlogger","ext.uls.interlanguage","ext.centralNotice.startUp","ext.centralNotice.geoIP"]);});(window.RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgBackendResponseTime":88,"wgHostname":"mw1185"});}); List of energy abbreviations - Wikipedia, the free encyclopedia document.documentElement.className = document.documentElement.className.replace( /(^|\s)client-nojs(\s|$)/, "$1client-js$2" ); (window.RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"List_of_energy_abbreviations","wgTitle":"List of energy abbreviations","wgCurRevisionId":729623729,"wgRevisionId":729623729,"wgArticleId":20478586,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["Lists of abbreviations","Technical communication","Energy-related lists"],"wgBreakFrames":false,"wgPageContentLanguage":"en","wgPageContentModel":"wikitext","wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy","wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgMonthNamesShort":["","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"],"wgRelevantPageName":"List_of_energy_abbreviations","wgRelevantArticleId":20478586,"wgRequestId":"V5YS1wpAIDcAAHmPWKUAAAAX","wgIsProbablyEditable":true,"wgRestrictionEdit":[],"wgRestrictionMove":[],"wgWikiEditorEnabledModules":{"toolbar":true,"dialogs":true,"preview":false,"publish":false},"wgBetaFeaturesFeatures":[],"wgMediaViewerOnClick":true,"wgMediaViewerEnabledByDefault":true,"wgVisualEditor":{"pageLanguageCode":"en","pageLanguageDir":"ltr","usePageImages":true,"usePageDescriptions":true},"wgPreferredVariant":"en","wgRelatedArticles":null,"wgRelatedArticlesUseCirrusSearch":true,"wgRelatedArticlesOnlyUseCirrusSearch":false,"wgULSCurrentAutonym":"English","wgFlaggedRevsParams":{"tags":{"status":{"levels":1,"quality":2,"pristine":3}}},"wgStableRevisionId":null,"wgCategoryTreePageCategoryOptions":"{\"mode\":0,\"hideprefix\":20,\"showcount\":true,\"namespaces\":false}","wgNoticeProject":"wikipedia","wgCentralNoticeCookiesToDelete":[],"wgCentralNoticeCategoriesUsingLegacy":["Fundraising","fundraising"],"wgWikibaseItemId":"Q6618880","wgCentralAuthMobileDomain":false,"wgVisualEditorToolbarScrollOffset":0});mw.loader.implement("user.options",function($,jQuery,require,module){mw.user.options.set({"variant":"en"});});mw.loader.implement("user.tokens",function ( $, jQuery, require, module ) { mw.user.tokens.set({"editToken":"+\\","patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"});/*@nomin*/; });mw.loader.load(["mediawiki.page.startup","mediawiki.legacy.wikibits","ext.centralauth.centralautologin","mmv.head","ext.visualEditor.desktopArticleTarget.init","ext.uls.init","ext.uls.interface","ext.quicksurveys.init","mw.MediaWikiPlayer.loader","mw.PopUpMediaTransform","skins.vector.js"]);mw.loader.state({"ext.tmh.thumbnail.styles":"ready","ext.uls.nojs":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.wikimediaBadges":"ready","mediawiki.legacy.commonPrint":"ready","mediawiki.legacy.shared":"ready","mediawiki.raggett":"ready","mediawiki.sectionAnchor":"ready","mediawiki.skinning.interface":"ready","skins.vector.styles":"ready","wikibase.client.init":"ready","site.styles":"ready","noscript":"ready","user.cssprefs":"ready"});}); List of energy abbreviations From Wikipedia, the free encyclopedia Jump to: navigation, search This is a list of acronyms found in the context of energy issues. Contents A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Appendix: Residential energy acronyms A[edit] AAQS Ambient Air Quality Standards (environment) (US) 4 Acronym and initialism Internet slang List of file formats List of information technology acronyms Professional certification References[edit] "Computing Acronyms and Abbreviations". All Acronyms. Retrieved 2008-07-12. External links[edit] The UNIX Acronym List Retrieved from "https://en.wikipedia.org/w/index.php?title=List_of_computing_and_IT_abbreviations&oldid=731028724" Categories: Lists of abbreviationsLists of computer termsComputer jargonHidden categories: Articles prone to spam from October 2013 Navigation menu Personal tools Not logged inTalkContributionsCreate accountLog in Namespaces Article Talk Variants Views Read Edit View history More Search Navigation Main pageContentsFeatured contentCurrent eventsRandom articleDonate to WikipediaWikipedia store Interaction HelpAbout WikipediaCommunity portalRecent changesContact page Tools What links hereRelated changesUpload fileSpecial pagesPermanent linkPage informationWikidata itemCite this page Print/export Create a bookDownload as PDFPrintable version Languages БългарскиČeštinaDeutschFrançaisHrvatskiNederlands日本語PolskiTürkçeУкраїнська Edit links This page was last modified on 22 July 2016, at 13:08. Text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. Privacy policy About Wikipedia Disclaimers Contact Wikipedia Developers Cookie statement Mobile view (window.RLQ=window.RLQ||[]).push(function(){mw.loader.state({"ext.globalCssJs.site":"ready","ext.globalCssJs.user":"ready","user":"ready"});mw.loader.load(["mediawiki.action.view.postEdit","site","mediawiki.user","mediawiki.hidpi","mediawiki.page.ready","mediawiki.searchSuggest","ext.eventLogging.subscriber","ext.gadget.teahouse","ext.gadget.ReferenceTooltips","ext.gadget.DRN-wizard","ext.gadget.charinsert","ext.gadget.refToolbar","ext.gadget.switcher","ext.gadget.featured-articles-links","ext.visualEditor.targetLoader","ext.wikimediaEvents","ext.navigationTiming","schema.UniversalLanguageSelector","ext.uls.eventlogger","ext.uls.interlanguage","ext.centralNotice.startUp","ext.centralNotice.geoIP"]);});(window.RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgBackendResponseTime":71,"wgHostname":"mw1270"});}); List of computing and IT abbreviations - Wikipedia, the free encyclopedia document.documentElement.className = document.documentElement.className.replace( /(^|\s)client-nojs(\s|$)/, "$1client-js$2" ); (window.RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"List_of_computing_and_IT_abbreviations","wgTitle":"List of computing and IT abbreviations","wgCurRevisionId":731028724,"wgRevisionId":731028724,"wgArticleId":50969,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["Articles prone to spam from October 2013","Lists of abbreviations","Lists of computer terms","Computer jargon"],"wgBreakFrames":false,"wgPageContentLanguage":"en","wgPageContentModel":"wikitext","wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy","wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgMonthNamesShort":["","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"],"wgRelevantPageName":"List_of_computing_and_IT_abbreviations","wgRelevantArticleId":50969,"wgRequestId":"V5YPWwpAAEEAAE2bAvgAAAAC","wgIsProbablyEditable":true,"wgRestrictionEdit":[],"wgRestrictionMove":[],"wgWikiEditorEnabledModules":{"toolbar":true,"dialogs":true,"preview":false,"publish":false},"wgBetaFeaturesFeatures":[],"wgMediaViewerOnClick":true,"wgMediaViewerEnabledByDefault":true,"wgVisualEditor":{"pageLanguageCode":"en","pageLanguageDir":"ltr","usePageImages":true,"usePageDescriptions":true},"wgPreferredVariant":"en","wgRelatedArticles":null,"wgRelatedArticlesUseCirrusSearch":true,"wgRelatedArticlesOnlyUseCirrusSearch":false,"wgULSCurrentAutonym":"English","wgFlaggedRevsParams":{"tags":{"status":{"levels":1,"quality":2,"pristine":3}}},"wgStableRevisionId":null,"wgCategoryTreePageCategoryOptions":"{\"mode\":0,\"hideprefix\":20,\"showcount\":true,\"namespaces\":false}","wgNoticeProject":"wikipedia","wgCentralNoticeCookiesToDelete":[],"wgCentralNoticeCategoriesUsingLegacy":["Fundraising","fundraising"],"wgWikibaseItemId":"Q1863082","wgCentralAuthMobileDomain":false,"wgVisualEditorToolbarScrollOffset":0});mw.loader.implement("user.options",function($,jQuery,require,module){mw.user.options.set({"variant":"en"});});mw.loader.implement("user.tokens",function ( $, jQuery, require, module ) { mw.user.tokens.set({"editToken":"+\\","patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"});/*@nomin*/; });mw.loader.load(["mediawiki.page.startup","mediawiki.legacy.wikibits","ext.centralauth.centralautologin","ext.visualEditor.desktopArticleTarget.init","ext.uls.init","ext.uls.interface","ext.quicksurveys.init","mw.MediaWikiPlayer.loader","mw.PopUpMediaTransform","skins.vector.js"]);mw.loader.state({"ext.tmh.thumbnail.styles":"ready","ext.uls.nojs":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.wikimediaBadges":"ready","mediawiki.legacy.commonPrint":"ready","mediawiki.legacy.shared":"ready","mediawiki.sectionAnchor":"ready","mediawiki.skinning.interface":"ready","skins.vector.styles":"ready","wikibase.client.init":"ready","site.styles":"ready","noscript":"ready","user.cssprefs":"ready"});}); List of computing and IT abbreviations From Wikipedia, the free encyclopedia Jump to: navigation, search This is a list of computing and IT acronyms and abbreviations. Contents A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0–9[edit] /. Slashdot 5 Ajax Asynchronous JavaScript and XML 5 AoE ATA over Ethernet 5 B TAM Basic Telecommunications Access Method 5 B2B Business-to-Business 5 B2C Business-to-Consumer 5 Business to Consumer 3 B2G Business-to-government 3 BA Balancing Authority 4 Biological Assessment 4 BACT Best Available Control Technology 4 BAL Basic Assembly Language 5 BAM Block Availability Map 5 BASIC Beginner's All-Purpose Symbolic Instruction Code 5 BBL barrel (42 gallons) —Balgzand Bacton Line (BBL Pipeline) 4 BBL/D Barrel per day 4 BBL/SD Barrel per day, on stream days 4 BBP Baseband Processor 5 BBS Bulletin Board System 5 BCD Barrel per day, on calendar days 4 Binary Coded Decimal 5 BCF billion cubic feet 4 BCNF Boyce–Codd normal form 5 BCP Blackstart Capability Plan 4 BEEP Blocks Extensible Exchange Protocol 5 BER Bit Error Rate 5 BES Bulk electric system (Electricity transmission) 4 BFD Bidirectional Forwarding Detection 5 Binary File Descriptor 5 BFS Breadth-First Search 5 BFT Byzantine Fault Tolerant 5 BGP Border Gateway Protocol 5 2 BI Business Intelligence 5 BIA Bureau of Indian Affairs (US) 4 BINAC Binary Automatic Computer 5 BIND Berkeley Internet Name Domain 5 BIOS Basic Input Output System 5 2 BJT Bipolar Junction Transistor 5 BLM Bureau of Land Management of United States Department of the Interior 4 BLS Bureau of Labor Statistics of United States Department of Labor 4 BMP Basic Multilingual Plane 5 BNC Bayonet Neill-Concelman 5 BOE Barrel of oil equivalent (international) 4 BOINC Berkeley Open Infrastructure for Network Computing 5 BOM Byte Order Mark 5 BOOTP Bootstrap Protocol 5 BPA Bonneville Power Administration (US) 4 BPDU Bridge Protocol Data Unit 5 BPEL Business Process Execution Language 5 BPL Broadband over power line 4 Broadband over Power Lines 5 BPM Business Process Management 5 Business Process Modeling 5 BPS Bulk Power System (Electricity transmission) 4 BRM Business Reference Model 5 BRMS Business Rule Management System 5 BRR Business Readiness Rating 5 BRU Business-to-business 3 BSA Business Software Alliance 5 BSB Backside Bus 5 BSD Berkeley Software Distribution 5 BSS Block Started by Symbol 5 BSoD Blue Screen of Death 5 BT BitTorrent 5 Bluetooth 5 BTL building tightness limit (building tightness) 4 BTMG Behind The Meter Generation 4 BTU British thermal unit(s) 4 BTX from BTX process, a mixture of benzene, toluene, and xylene (oil) 4 BUSI Business 3 BW Bandwidth 5 BWR Boiling water reactor (nuclear) 4 BYOD Bring Your Own Device 5 Bash Bourne-again shell 5 BfP Bureau Fédéral du Plan (Belgium). (Has responsibilities over economic, social and environmental policy 4 BiDi Bi-Directional 5 Blob Binary large object 5 Blog Web Log 5 BuRec United States Bureau of Reclamation (government) 4 C&F Customer Experience 3 C&I Commercial and industrial customers (Electricity transmission) 4 CA Carbon Abatement- increasing carbon neutrality —Control area (EU) – The portion of the generation and transmission system controlled by a single transmission system operator. (See also TSO). 4 Computer architecture 5 CAA Clean Air Act (US) 4 CAD Computer-Aided Design 5 CAE Computer-Aided Engineering 5 CAEM Center for the Advancement of Energy Markets (US) 4 CAFE Corporate Average Fuel Economy standards (US) 4 CAGR Capital Expenditures 3 CAI Computer-Aided Instruction 5 CAID Computer-Aided Industrial Design 5 CAISO California Independent System Operator Corporation, a regional transmission organization. (US) 4 CAM Computer-Aided Manufacturing 5 CAO Chief Accounting Officer 3 CAP Capacity market programs 4 CAPM Capital asset pricing model 4 CAPTCHA Completely Automated Public Turing Test to tell Computers and Humans Apart 5 CAQ Computer-Aided Quality Assurance 5 CARB California Air Resources Board 4 CASE Computer-Aided Software Engineering 5 CAT Computer-Aided Translation 5 CBL Customer Baseline Load 4 CBM Capacity Benefit Margin 4 CBOB Conventional Gasoline Blendstock for Oxygenate Blending (Motor Gasoline Blending Component) 4 CC Combined cycle see also CCPP and CCGT 4 Combined cycle Gas turbine electricity generator 4 CCLIP Conditional Credit Line for Investment Projects 4 CCN Certificate of Convenience and Necessity (utilities regulation) 4 CCPG Colorado Coordinated Planning Group 4 CCPP Combined cycle power plant 4 CD Contract Demand 4 Compact Disc 5 CD-R CD-Recordable 5 CD-ROM CD Read-Only Memory 5 CD-RW CD-Rewritable 5 CDD Cooling degree day, a qualitative index used to reflect the demand for energy to cool a business 4 CDE Common Desktop Environment 5 CDH cooling degree hours (climate) 4 CDM Clean Development Mechanism 4 CDMA Code Division Multiple Access 5 2 CDN Content Delivery Network 5 CDP Continuous Data Protection 5 CDSA Common Data Security Architecture 5 CEA Country Environmental Analysis 4 CEC California Energy Commission —Commission for Environmental Cooperation 4 CEEC Central and Eastern European Countries 4 CEMS Continuous emissions monitoring system 4 CEP Country Environmental Profile —Clean Energy Partnership, a joint hydrogen-project in Europe. 4 CEPII Centre d'Etudes Prospectives et d'Informations Internationales Economics think tank 4 CEPS Centre for European Policy Studies 4 CEQ Council on Environmental Quality 4 CER Certified Emission Reduction 4 CERA Cambridge Energy Research Associates 4 CERCLA Comprehensive Environmental Response, Compensation, and Liability Act "Superfund" (US) 4 CERCLIS Comprehensive Environmental Response, Compensation, and Liability Information System (US) 4 CERT Computer Emergency Response Team 5 CERTS Consortium for Electric Reliability Technology Solutions sposored by the United States Department of Energy and California Energy Commission (US) 4 CES Consumer Electronics Show 5 CF Compact Flash 5 CFD Computational Fluid Dynamics 5 CFG Context-Free Grammar 5 Control Flow Graph 5 CFL compact fluorescent light 4 CFO Chief Financial Officer 3 CFS cubic feet per second 4 Certified Internal Auditor 3 CFTC Commodity Futures Trading Commission 4 CG Computer Graphics 5 CGA Color Graphics Array 5 CGI Common Gateway Interface 5 Computer-Generated Imagery 5 CGT Computational Graph Theory 5 CH4 Methane 4 CHAP Challenge-Handshake Authentication Protocol 5 CHP Combined heat and power 4 CHS Cylinder-Head-Sector 5 CIAC Contributions in Aid of Construction 4 CIDR Classless Inter-Domain Routing 5 CIF Committee on monetary, finance and balance of payments statistics 3 CIFS Common Internet Filesystem 5 CIM Common Information Model 5 Computationally Independent Model 5 CIO Chief Information Officer 5 CIP Critical Infrastructure Protection (US) —see also EPCIP European Programme for Critical Infrastructure Protection 4 CIR Committed information rate 5 CISC Complex Instruction Set Computer 5 CJK Chinese, Japanese, and Korean 5 CJKV Chinese, Japanese, Korean, and Vietnamese 5 CLI Command Line Interface 5 CLR Common Language Runtime 5 CM Configuration Management 5 Content Management 5 CMMI Capability Maturity Model Integration 5 CMO Chief Marketing Officer 3 CMOS Complementary Metal-Oxide Semiconductor 5 CMS Content Management System 5 CMVE Competitive Market Value Estimate 4 CN Canonical Name 5 Common Name 5 CNC Computer Numerical Control 5 CNG Compressed natural gas 4 CNR Communications and Networking Riser 5 CO Carbon monoxide 4 CO2 Carbon dioxide 4 COB Close of Business 3 COBOL Common Business-Oriented Language 5 COC Cost of capital 4 COE U.S. Army Corps of Engineers 4 COGS Cost of Goods Sold 3 COM Component Object Model or communication 5 COP coefficient of performance 4 CORBA Common Object Request Broker Architecture 5 COTS Commercial Off-The-Shelf 5 CP Coincident Peak —Certificate Proceeding 4 CP/M Control Program/Monitor 5 CPA California Power Authority 4 Cell Processor Architecture 5 Consumer Price Index 3 CPAN Comprehensive Perl Archive Network 5 CPI Consumer Price Index 4 CPP Critical Peak Pricing 4 CPP-F Critical peak fixed 4 Critical peak variable 4 CPRI Common Public Radio Interface 5 CPS Control Performance Standard —Cycles per second (hertz) 4 characters per second 5 CPU Central Processing Unit 5 2 Cost per Unit 3 CPUC California Public Utilities Commission 4 CR Carriage Return 5 CRAN Comprehensive R Archive Network 5 CRC Cyclic Redundancy Check 5 CREF Caribbean Renewable Energy Facility 4 CRI color rendering index 4 CRLF Carriage Return Line Feeds 5 CRM Customer Relationship Management 5 3 2 CRP Conservation Reserve Program (US) 4 CRS Computer Reservations System 5 CRT Capacity Reservation Tariff 4 Cathode Ray Tube 5 CRUD Create, Read, Update and Delete 5 CS Cable Select 5 Computer Science 5 CSD Commission for Sustainable Development (UN) 4 CSE Computer Science and Engineering 5 CSEM Center for the Study of Energy Markets (US) 4 CSI Common System Interface 5 Continual Service Improvement 3 CSMA/CD Carrier sense multiple access with collision detection 5 CSO Chief Security Officer 3 CSP Country Strategy Paper —Curtailment service provider 4 Cloud Service Provider 5 Communicating Sequential Processes 5 CSR Corporate social responsibility 3 CSRF Cross-Site Request Forgery 5 CSS Cascading Style Sheets 5 2 Content-Scrambling System 5 Closed Source Software 5 Cross-Site Scripting 5 CSV Comma-Separated Values 5 Comma-separated Values 2 CT Combustion turbine (electricity) 4 Computerized Tomography 5 CTAN Comprehensive TeX Archive Network 5 CTCP Client-To-Client Protocol 5 CTFE Compile Time Function Execution 5 CTI Computer Telephony Integration 5 CTL Computational Tree Logic 5 CTM Close To Metal 5 CTO Chief Technology Officer 3 CTS Clear To Send 5 CTSS Compatible Time-Sharing System 5 CUA Common User Access 5 CVP Consumer-to-business 3 CVS Concurrent Versioning System 5 Concurrent Version Control 2 CZMA Coastal Zone Management Act 4 CfD Contract for difference 4 Corp. Chief Operating Officer 3 DA-RTP RTP Day ahead real time pricing (regarding Electricity metering) 4 DAC Digital-To-Analog Converter 5 Discretionary Access Control 5 DADRP Day Ahead Demand Response Program 4 DAL Database Abstraction Layer 5 DANIDA Danish International Development Agency 4 DAO Data Access Object 5 Data Access Objects 5 Disk-At-Once 5 DAP Directory Access Protocol 5 DARPA Defense Advanced Research Projects Agency 5 DAT Digital Audio Tape 5 DB Database 5 DBA Database Administrator 5 DBCS Double Byte Character Set 5 DBMS Database Management System 5 DC Direct current 4 DCC Direct Client-to-Client 5 DCCA Debian Common Core Alliance 5 DCCP Datagram Congestion Control Protocol 5 DCL Data Control Language 5 DCLM Direct control load management 4 DCMI Dublin Core Metadata Initiative 5 DCOM Distributed Component Object Model 5 DCS Disturbance Control Standard 4 Distributed Control System 5 DD Double Density 5 DDA Department 3 DDE Dynamic Data Exchange 5 DDL Data Definition Language 5 DDR Double Data Rate 5 DDoS Distributed Denial of Service 5 DEC Digital Equipment Corporation 5 DEFG Distributed Energy Financial Group (US) 4 DEIS Draft Environmental Impact Statement (US) 4 DER Distributed Energy Resources 4 DES Data Encryption Standard 5 DF Distribution Factor 4 DFA Deterministic Finite Automaton 5 DFD Data Flow Diagram 5 DFS Depth-First Search 5 Distributed File System 5 Dynamic Frequency Selection 2 DG Distributed generation (electricity) —Directorate-General (EU) (government) 4 DGD Dworkin's Game Driver 5 DHCP Dynamic Host Configuration Protocol 5 DHTML Dynamic Hypertext Markup Language 5 DI Director 3 DIF Data Integrity Field 5 DIIS Danish Institute for International Studies (organization) 4 DIMM Dual Inline Memory Module 5 DIN Deutsches Institut für Normung 5 DIP Dual In-line Package 5 DIVX Digital Video Express 5 DKIM Domain Keys Identified Mail 5 DL Download 5 DLC Direct load control (regarding Load management) 4 DLL Dynamic Link Library 5 DLNA Digital Living Network Alliance 5 DLP Data loss protection 5 DMA Direct Memory Access 5 DMCA Digital Millennium Copyright Act 5 DME Disturbance Monitoring Equipment 4 DMI Direct Media Interface 5 DML Data Manipulation Language 5 Definitive Media Library 5 DMR Dennis M. Ritchie 5 DMZ Demilitarized Zone 5 DN Distinguished Name 5 DND Drag-and-Drop 5 DNS Domain Name System 5 Domain Name Server 2 DO Dissolved oxygen 4 DOA Dead on Arrival 5 DOCSIS Data Over Cable Service Interface Specification 5 DOE United States Department of Energy (government) 4 DOE/FE United States Department of Energy Office of Fossil Energy (government) 4 DOI United States Department of the Interior (government) 4 DOM Document Object Model 5 DOS Disk Operating System 5 DOT United States Department of Transportation (government) 4 DP Dot Pitch 5 DPC Deferred Procedure Call 5 DPI Deep Packet Inspection 5 Dots Per Inch 5 DPMI DOS Protected Mode Interface 5 DPMS Display Power Management Signaling 5 DR Demand response 4 DR-DOS Digital Research - Disk Operating System 5 DRAM Demand Response and Advanced Metering Coalition 4 Dynamic Random-Access Memory 5 DRB Demonstrated reserve base 4 DRCC Demand Response Coordinating Council (coalition) 4 DRI Direct Rendering Infrastructure 5 DRM Digital Rights Management 5 Direct Rendering Manager 5 DRR Demand Response resources 4 DRRC Demand Response Research Center (California) 4 DSA Digital Signature Algorithm 5 DSDL Document Schema Definition Languages 5 DSDM Dynamic Systems Development Method 5 DSL Digital Subscriber Line 5 Domain-Specific Language 5 DSLAM Digital Subscriber Line Access Multiplexer 5 DSM Demand side management 4 DSN Database Source Name 5 Data Set Name 5 DSO Distribution system operator (regarding electricity distribution) 4 Days Sales Outstanding 3 DSP Digital Signal Processor 5 DSSSL Document Style Semantics and Specification Language 5 DTD Document Type Definition 5 DTE Data Terminal Equipment or data transfer rate 5 DTP Desktop Publishing 5 Do this please 3 DTR Data Terminal Ready or Data transfer rate 5 DTW dealer tank wagon (as in, "oil companies setting regional dealer tank wagon pricing") (Oil) 4 DVB-T Digital Video Broadcast - Terrestrial 2 DVD Digital Versatile Disc 5 DVD-R DVD-Recordable 5 DVD-ROM DVD-Read Only Memory 5 DVD-RW DVD-Rewritable 5 DVI Digital Visual Interface 5 DVP Delivery versus payment 3 DVR Digital Video Recorder 5 DW Data Warehouse 5 DoS Denial of Service 5 Dth Dekatherm (defined as 1 million British thermal units, also written "MMBtu") (measurement) 4 E&D Exploration and development expenses 4 E-mail Electronic mail 5 E85 E85 fuel: A fuel containing a mixture of 85 percent ethanol and 15 percent gasoline 4 E95 like E85 fuel but with less gasoline. A fuel containing a mixture of 95 percent ethanol and 5 percent gasoline 4 EA Environmental assessment as in an Environmental impact assessment 4 EACs Effective annual rate 3 EAI Enterprise Application Integration 5 EAP Extensible Authentication Protocol 5 EAR Estimated additional resources, as in considering reserves of uranium deposits 4 EAY Earnings before Interest, Taxes, Depreciation, and Amortization 3 EBCDIC Extended Binary Coded Decimal Interchange Code 5 EBML Extensible Binary Meta Language 5 EC European Commission 4 ECAR East Central Area Reliability Coordination Agreement (US) 4 ECB Electronic Data Interchange 3 ECC Elliptic Curve Cryptography 5 Error-correcting code memory 2 ECGC Export Credit Guarantee Corporation of India 3 ECMA European Computer Manufacturers Association 5 ECN Explicit Congestion Notification 5 ECOS Embedded Configurable Operating System 5 ECPA Electric Consumers Protection Act (US) 4 ECRS Expense and Cost Recovery System 5 EDA Electronic Design Automation 5 EDC Electric Distribution Company (electricity) 4 EDGE Enhanced Data Rates for GSM Evolution 2 EDI Electronic Data Interchange 5 EDO Extended Data Out 5 EDRP Emergency demand response program 4 EDSAC Electronic Delay Storage Automatic Calculator 5 EDVAC Electronic Discrete Variable Automatic Computer 5 EE Energy efficiency 4 EEI Edison Electric Institute 4 EEM Energy Efficient Mortgage 4 EEPROM Electronically Erasable Programmable Read-Only Memory 5 EER energy efficiency ratio 4 EF Earth Fault 4 energy factor (clothes washers) 4 EFF Electronic Frontier Foundation 5 EFI Extensible Firmware Interface 5 EFM Eight-to-Fourteen Modulation 5 EFSM Enterprise Resource Planning 3 EGA Enhanced Graphics Array 5 EGP Exterior Gateway Protocol 5 EHV Extra high voltage 4 EIA Energy Information Administration (US) —Environmental impact assessment (international) 4 EIB European Investment Bank 4 EIDE Enhanced IDE 5 EIGRP Enhanced Interior Gateway Routing Protocol 5 EIM Energy Imbalance Market (electricity) 4 Energy Improvement Mortgage 4 EIPP Eastern Interconnection Phasor Project 4 EIS Environmental Impact Statement (US) 4 EISA Extended Industry Standard Architecture 5 ELCON Electricity Consumers Resources Council 4 ELF Extremely Low Frequency 5 Executable and Linkable Format 5 ELM ELectronic Mail 5 EMACS Editor MACroS 5 EMF Electro magnetic field 4 EMI Equated Monthly Installment 3 EMP Environmental Management Plan 4 EMS Expanded Memory Specification 5 ENIAC Electronic Numerical Integrator And Computer 5 EOD End of Day 5 EOF End of File 5 EOL End of Line 5 EOM End Of Message 5 EOR Enhanced oil recovery 4 EPA United States Environmental Protection Agency 4 EPAct Energy Policy Act of 1992 (US) —Energy Policy Act of 2005 (US) 4 EPC Export Promotion Council 3 EPCIP European Programme for Critical Infrastructure Protection 4 EPIC Explicitly Parallel Instruction Computing 5 EPRI Electric Power Research Institute (US) 4 EPROM Erasable Programmable Read-Only Memory 5 EPSA Electric Power Supply Association 4 EQR Electric Quarterly Report 4 ERA Economic Regulatory Administration (part of United States Department of Energy 4 ERCOT Electric Reliability Council of Texas, Inc, a regional transmission organization. (US) 4 ERD Entity-Relationship Diagram 5 ERGEG European Regulators Group for Electricity and Gas 4 ERIS Energy Resource Interconnection Service (electricity) 4 ERM Entity-Relationship Model 5 ERO Electric Reliability Organization. The US designated NERC as its ERO. 4 ERP Enterprise Resource Planning 5 2 ERRA Energy Regulators Regional Association 4 ERV energy-recovery ventilator 4 ERoEI Energy returned on energy invested 4 ESB Enterprise service bus 5 ESCO Energy service company 4 ESCON Enterprise Systems Connection 5 ESD Electrostatic Discharge 5 ESI Environmental Sustainability Index 4 ESMAP Energy Sector Management Assistance Programme 4 ESP Electrostatic precipitator 4 ESR Eric Steven Raymond 5 ESS Energy Storage System, as in grid energy storage (electricity) 4 ETA Estimated Time of Arrival 3 ETBE ethyl tertiary butyl ether 4 ETD Estimated Time of Delivery 3 ETL Extract, Transform, Load 5 ETSO European Transmission System Operators association 4 EU European Union 4 EUC Extended Unix Code 5 EUEF European Union Energy Facility 4 EUEI European Union Energy Initiative 4 EULA End User License Agreement 5 EWMH Extended Window Manager Hints 5 EXT EXTended file system 5 EdF Electricité de France 4 FAB Feature Advantage Benefits 3 FAC Fuel Adjustment Clause 4 FACTS Flexible Alternating Current Transmission System 4 FAP FORTRAN Assembly Program 5 FAQ Frequently Asked Questions 5 FASB Financial Accounting Standards Board 4 FASM Flat ASseMbler 5 FAT File Allocation Table 5 FBDIMM Fully Buffered Dual Inline Memory Module 5 FBR fast breeder reactor 4 FC-AL Fibre Channel Arbitrated Loop 5 FCB File Control Block 5 FCITC First Contingency Incremental Transfer Capability 4 FCS Frame Check Sequence 5 FDC Floppy Disk Controller 5 FDD Floppy Disk Drive 5 FDDI Fiber Distributed Data Interface 5 FDMA Frequency-Division Multiple Access 5 FDP Finance Department 3 FDS Fedora Directory Server 5 FEC Forward Error Correction 5 FEIS Final Environmental impact statement (US) 4 FELCC Firm Energy Load Carrying Capability 4 FEMB Front-End Motherboard 5 FERC Federal Energy Regulatory Commission (U.S.) 4 FET Field Effect Transistor 5 FGD Flue-gas desulfurization 4 FHS Filesystem Hierarchy Standard 5 FICON FIber CONnectivity 5 FIFO First In First Out 5 Finance Minister 3 FINESSE Financing Energy Services for Small Scale Users 4 FIPS Federal Information Processing Standards 5 FL Function Level 5 Financial leverage 3 FLAC Free Lossless Audio Codec 5 FLOPS FLoating-Point Operations Per Second 5 FLOSS Free/Libre/Open Source Software 5 FLPMA Federal Land Policy and Management Act (US) 4 FMC Fixed Mobile Convergence "Mobile UC or Unified Communications over Wireless" 5 FME Free market economics 4 FOB Freight On Board 3 FOC Free Of Cost 3 FOLDOC Free On-line Dictionary of Computing 5 FOMC Financial Information Exchange 3 FONSI Finding of no significant impact. See Environmental impact statement (US) 4 FOSDEM Free and Open source Software Developers' European Meeting 5 FOSI Formatted Output Specification Instance 5 FOSS Free and Open Source Software 5 FP Function Programming 5 FPA Federal Power Act (US) 4 FPC Federal Power Commission (US) 4 FPGA Field Programmable Gate Array 5 FPS Firm peaking service. See Peaking power plant 4 Floating Point Systems 5 Frames Per Second 2 FPU Floating Point Unit 5 FQDN Fully Qualified Domain Name 5 FRCC Florida Reliability Coordinating Council (US) 4 FRS Financial Reporting System 4 FRU Field Replaceable Unit 5 FS File System 5 FSA For Your Information 3 FSB Front Side Bus 5 FSF Free Software Foundation 5 FSM Finite State Machine 5 FT Firm Transportation Service 4 FTC Federal Trade Commission (US) 4 FTE Full Time Equivalent 3 FTP File Transfer Protocol 5 2 FTR Firm Transmission Rights —Financial Transmission Rights. See explanation in electricity markets. 4 FTS Firm transportation service 4 FTTC Fiber To The Curb 5 FTTH Fiber To The Home 5 FTTP Fiber To The Premises 5 FUA The Fuel Use Act (US) 4 FUCO Foreign Utility Company 4 FUD Fear Uncertainty Doubt 5 FUP Fair User Policy 2 FWPA Federal Water Power Act (US) 4 FWS Folding White Space 5 FXP File eXchange Protocol 5 FYA For Your Action 3 FYF Z[edit] zcyc – Zero Coupon Yield Curve 3 FYI For Your Information 5 Fin Min Finance Minister 3 Fishway Fish ladder 4 G&T Generation and transmission utility cooperative (electricity) 4 G11N Globalization 5 GAAP Generally Accepted Accounting Principles 3 GAAS Gross Domestic Product 3 GADS Generating Availability Data System (electricity) 4 GAL gallon (measurement) 4 GAO Government Accountability Office (General Accounting Office) (US) (government) 4 GATT General Agreement on Tariffs and Trade (government) 4 GB Gigabyte 5 GCC GNU Compiler Collection 5 GCJ GNU Compiler for Java 5 GCR Group Code Recording 5 GDB GNU Debugger 5 GDI Graphics Device Interface 5 GDP gross domestic product (economics) 4 GDR General Ledger 3 GEF Global Environmental Facility (environment) 4 GFDL GNU Free Documentation License 5 GFN Global Footprint Network 4 GFSE Global Forum on Sustainable Energy (organization) 4 GHC Gross Inland (energy) Consumption (EU) (energy) 4 GHG Greenhouse gas (climate) 4 GIA Generator Interconnection Agreement (electricity) 4 GIC Gas Inventory Charge (natural gas) 4 GIF Graphics Interchange Format 5 GIGO Garbage In, Garbage Out 5 GIMP GNU Image Manipulation Program 5 GIMPS Great Internet Mersenne Prime Search 5 GIS Geographic Information System 5 GISB Gas Industry Standards Board (now NAESB) (US) (natural gas) 4 GLDF Generator to Load Distribution Factor. See Load balancing (electricity) 4 GLUT OpenGL Utility Toolkit 5 GM Game Master 2 GML Geography Markup Language 5 GMO Genetically modified organism 4 GMP Green Mountain Power (US) (electricity) 4 GMROII Gross Margin Return on Inventory Investment 3 GMV Gross Merchandise Volume 3 GNOME GNU Network Object Model Environment 5 GNP gross national product (economics) 4 GNSED Global Network for Sustainable Energy Development 4 GNU GNU's Not Unix 5 GOMS Goals, Operators, Methods, and Selection rules 5 GP Gross Profit 3 GPASM GNU PIC ASseMbler 5 GPFS General Parallel File System 5 GPG GNU Privacy Guard 5 GPGPU General-Purpose Computing on Graphics Processing Units 5 GPIB General-Purpose Instrumentation Bus 5 GPL General Public License 5 General-Purpose Language 5 GPO Global Value Chain 3 GPRS General Packet Radio Service 5 GPS Global Positioning System 2 GPT GUID Partition Table 5 GPU Graphics Processing Unit 5 GRI Gas Research Institute (US) (natural gas) 4 GRUB Grand Unified Boot-Loader 5 GSF Generator to Load Distribution Factor. See Load balancing (electricity) 4 GSM Global System for Mobile Communications 5 GSR Gas Supply Realignment (natural gas) 4 GTCC Gas Turbine Combined Cycle (electricity) 4 GTI Gas Technology Institute (US) 4 GTK+ GIMP Toolkit 5 GUI Graphical User Interface 5 GUID Globally Unique IDentifier 5 GVEP Global Village Energy Partnership (organization) 4 GVW gross vehicle weight (transportation) 4 GW Gigawatt (one billion watts) (measurement- elect) 4 GWE Gigawatt of electric energy (measurement- elect) 4 GWP global warming potential (climate) 4 GWT Google Web Toolkit 5 GYR IT Networking 5 Gas GNU Assembler 5 Gb Gigabit 5 Genco Any company doing electricity generation (US) (electricity) 4 Gm3 Billion cubic metres (measurement – gas) 4 GridCo Any company running a transmission grid (electricity). Also known as a TransCo (US) (electricity) 4 Gt Gigaton (1 billion tons) (measurement) 4 Gtoe One billion tons of oil equivalent(EU) (measurement- oil) 4 Gwh Gigawatt hour (one billion watt hours) (measurement- elect) 4 HA High Availability 5 HAL Hardware Abstraction Layer 5 HASP Houston Automatic Spooling Priority 5 HBA Host Bus Adapter 5 HCA Host Control Area (electricity) 4 HCI Human Computer Interaction 5 HCL Hardware Compatibility List 5 HD High Density 5 High Definition,Half Duplex 2 HD DVD High Definition DVD 5 HDD Heating degree days a qualitative index used to reflect the demand for energy to heat a business (conservation) 4 heating degree day 4 Hard Disk Drive 5 HDL Hardware Description Language 5 HDMI High-Definition Multimedia Interface 5 HERS Home energy rating standard (conservation) 4 HF High Frequency 5 HFS Hierarchical File System 5 HHD Hybrid Hard Drive 5 HHI Herfindahl–Hirschman Index (markets) 4 home heating index 4 HID high intensity discharge (electricity) 4 high-intensity discharge 4 Human Interface Device 5 HIG Human Interface Guidelines 5 HIRD Hurd of Interfaces Representing Depth 5 HLASM High Level ASseMbler 5 HLS HTTP Live Streaming 5 HMA High Memory Area 5 HP Hewlett-Packard 5 HPC High-Performance Computing 5 HPFS High Performance File System 5 HQ I[edit] IAS – International Accounting Standards 3 HR Human Resources 3 HRV heat-recovery ventilator 4 HSDPA High-Speed Downlink Packet Access 5 2 HSM Hierarchical Storage Management 5 HSPF heating seasonal performance factor 4 HT Hyper Threading 5 HTC High-Throughput Computing 5 HTGR high temperature gas cooled reactor (nuclear) 4 HTM Hierarchical Temporal Memory 5 HTML Hypertext Markup Language 5 HyperText Markup Language 2 HTTP Hypertext Transfer Protocol 5 Hypertext Transport Protocol 2 HTTPd Hypertext Transport Protocol Daemon 5 HTX HyperTransport eXpansion 5 HURD Hird of Unix-Replacing Daemons 5 HVAC Heating, ventilation, and air conditioning (conservation) —High voltage alternating current (electricity) 4 HVAR Highly Valued Aquatic Resource 4 HVD Holographic Versatile Disc 5 HVDC High Voltage Direct Current 4 HVI Home Ventilating Institute 4 Hz Hertz 5 I/C Interruptible /Curtailable (electricity) 4 I/F Interface 5 I/O Input/output 5 I18N Internationalization 5 IANA Internet Assigned Numbers Authority 5 IBM International Business Machines 5 IC Integrated Circuit 5 ICANN Internet Corporation for Assigned Names and Numbers 5 ICAP Installed Capacity (electricity) 4 ICAP-SCR Installed capacity special case resources (electricity) 4 ICB International Financial Reporting Standard 3 ICCP Inter-Control Center Communications Protocol (electricity) 4 ICE Internal combustion engine (transportation) 4 In-Circuit Emulator 5 Intrusion Countermeasure Electronics 5 ICMP Internet Control Message Protocol 5 ICP Internet Cache Protocol 5 ICT Independent Coordinator of Transmission (US) (electricity) —Information and Communication Technology 4 Information and Communication Technology 5 IDC Interchange Distribution Calculator (electricity) 4 IDE Integrated Development Environment 5 Integrated Drive Electronics 5 IDF Intermediate Distribution Frame 5 Intermediate Data Format 5 IDL Interface Definition Language 5 IDS Intrusion Detection System 5 IE Internet Explorer 5 IEA International Energy Agency (Paris) 4 IEC International Electrotechnical Commission 5 IECC International Energy Conservation Code 4 IEEE Institute of Electrical and Electronics Engineers 4 5 IEM Internal electricity market (electricity) 4 IEPE Institute of Energy Policy and Economics (France) 4 IER Incremental Energy Rate 4 IET International emission trading (policy) 4 IETF Internet Engineering Task Force 5 IFL Integrated Facility for Linux 5 IGCC Integrated coal gasification combined cycle 4 IGIC Interim gas inventory charge (natural gas) 4 IGMP Internet Group Management Protocol 5 IGRP Interior Gateway Routing Protocol 5 IGSC Interim gas supply charge (natural gas) 4 IGT Institute of Gas Technology (natural gas) 4 IHR Incremental Heat Rate- plant monitoring (electricity) 4 IHV Independent Hardware Vendor 5 IIASA International Institute for Applied System Analysis 4 IIOP Internet Inter-Orb Protocol 5 IIS Internet Information Services 5 IJC International Joint Commission 4 IL Intermediate Language 5 ILCLP Initial Public Offering 3 ILP Integrated Licensing Process 4 IM Instant Messaging 5 IMAP Internet Message Access Protocol 5 IME Input Method Editor 5 INFOSEC Information Systems Security 5 INGAA Interstate Natural Gas Association of America 4 IOS Interconnected Operations Services (electricity) 4 IOU Investor owned utility (electricity) 4 IP Intellectual Property 5 Internet Protocol 5 2 IPAA Independent Petroleum Association of America (oil) 4 IPC Inter-Process Communication 5 IPCC Intergovernmental Panel on Climate Change (climate) 4 IPL Initial Program Load 5 IPO Inter Procedural Optimization 5 IPP Independent Power Producer (electricity) 4 Internet Printing Protocol 5 IPS In-Plane Switching 5 Instructions Per Second 5 Intrusion Prevention System 5 IPS/UPS Integrated Power System/United Power System, consisting of Independent Power Systems of 12 countries bordering Russia and the Unified Power System of Russia 4 IPTV Internet Protocol Television 5 2 IPX Internetwork Packet Exchange 5 IPsec Internet Protocol security 5 IR Intermediate Representation 5 Interest Rate - typically referring to an IR derivative product 3 IRC ISO / RTO Council (electricity) 4 Internet Relay Chat 5 2 IRI Internationalized Resource Identifier 5 IROL Interconnection Reliability Operating Limit (electricity) 4 IRP Integrated Resource Planning 4 I/O Request Packet 5 IRQ Interrupt Request 5 IRR Internal Rate of Return (finance) 4 IRS Institute of Supply Management 3 IS Information Systems 5 IS-IS Intermediate System to Intermediate System 5 ISA Industry Standard Architecture 5 Instruction Set Architecture 5 ISAM Indexed Sequential Access Method 5 ISC Internet Storm Center 5 ISDN Integrated Services Digital Network 5 ISO Independent System Operator (US) (see also TSO) Responsible for grid management, but does not own assets. (electricity) 4 NE ISO New England, Inc. (electricity) 4 International Organization for Standardization 5 ISO-NE Independent System Operator of New England, a regional transmission organization. (US) (electricity) 4 ISP Internet Service Provider 5 2 ISPF Interactive System Productivity Facility 5 ISR Interrupt Service Routine 5 ISS Interruptible Sales Service 4 ISV Independent Software Vendor 5 IT Interruptible Transportation is gas shipment via pipeline whose delivery may be interrupted in favor of "firm shipment" contracts if there is lack of capacity. (natural gas) 4 Information Technology 5 ITC Investment tax credit (policy) 4 ITIL Information Technology Infrastructure Library 5 ITL Interval Temporal Logic 5 ITS "Interruptible Transportation Service" is gas shipment via pipeline whose delivery may be interrupted in favor of "firm shipment" contracts if there is lack of capacity. (natural gas) 4 ITU International Telecommunication Union 5 IVCR Interactive Virtual Classroom 5 IVRS Interactive Voice Response System 5 IYR J[edit] J – Journal 3 IoT Internet of Things 5 IrDA Infrared Data Association 5 I²C Inter-Integrated Circuit 5 I²S Integrated Interchip Sound 5 J2EE Java 2 Enterprise Edition 5 J2ME Java 2 Micro Edition 5 J2SE Java 2 Standard Edition 5 JAX-RPC Java XML for Remote Procedure Calls 5 JAXB Java Architecture for XML Binding 5 JAXP Java API for XML Processing 5 JBOD Just a Bunch of Disks 5 JCE Java Cryptography Extension 5 JCL Job Control Language 5 JCP Java Community Process 5 JDBC Java Database Connectivity 5 JDK Java Development Kit 5 JDS Java Desktop System 5 JEE Java Enterprise Edition 5 JES Job Entry Subsystem 5 JFC Java Foundation Classes 5 JFET Junction Field-Effect Transistor 5 JFS IBM Journaling File System 5 JINI Jini Is Not Initials 5 JIS Just in sequence 3 JIT Just-In-Time 5 Just in time 3 JME Java Micro Edition 5 JMS Java Message Service 5 JMX Java Management Extensions 5 JNDI Java Naming and Directory Interface 5 JNI Java Native Interface 5 JNZ Jump non-zero 5 JPEG Joint Photographic Experts Group 5 JRC Joint Research Centre 4 JRE Java Runtime Environment 5 JREC Johannesburg Renewable Energy Coalition 4 JS JavaScript 5 JSE Java Standard Edition 5 JSON JavaScript Object Notation 5 2 JSP Jackson Structured Programming 5 JavaServer Pages 5 JTAG Joint Test Action Group 5 JUG Java Users Group 5 JVM Java Virtual Machine 5 K L[edit] LBO – Leveraged Buyout 3 K&R Kernighan and Ritchie 5 K-value thermal conductance 4 KB Keyboard 5 Kilobyte 5 Knowledge Base 5 KDE K Desktop Environment 5 KM Knowledge Machine 5 KRL Knowledge Representation Language 5 KVM Keyboard, Video, Mouse 5 Keyboard Video Mouse 2 Kb Kilobit 5 L10N Localization 5 L2TP Layer two Tunneling Protocol 5 LACP Link Aggregation Control Protocol 5 LAMP Linux Apache MySQL Perl 5 Linux Apache MySQL PHP 5 Linux Apache MySQL Python 5 LAN Local Area Network 5 LBA Local Balancing Authority (electricity) 4 Logical Block Addressing 5 LBNL Lawrence Berkeley National Laboratory (US) 4 LC London Interbank Offered Rate 3 LCD Liquid Crystal Display 5 LCOS Liquid Crystal On Silicon 5 LCR Least Cost Routing 5 LDAP Lightweight Directory Access Protocol 5 LDC Local distribution company (electricity) 4 LE Logical Extents 5 LED Light-Emitting Diode 5 LEED Leadership in Energy and Environmental Design, standard for Green Building design 4 LEVP Low Emissions Vehicle Program 4 LF Line Feed 5 Low Frequency 5 LFS Linux From Scratch 5 LGA Land Grid Array 5 LGPL Lesser General Public License 5 LHV lower heating value 4 LIB LIBrary 5 LIF Low Insertion Force 5 LIFFE Limited Liability Company 3 LIFO Last In First Out 5 LIHEAP Low Income Home Energy Assistance Program 4 LILO Linux Loader 5 LIPA Long Island Power Authority (US) (electricity) 4 LISP LISt Processing 5 LKML Linux Kernel Mailing List 5 LLF Load-loss factor (electricity) 4 LM Lan Manager 5 LME Limited Company 3 LMP Locational marginal price/pricing. See explanation in electricity markets. 4 LMR Load Modifying Resource (electricity) 4 LNG Liquified Natural Gas 4 LOC Lines of Code 5 LODF Line Outage Distribution Factor (electricity) 4 LOLE Loss of Load Expectation (electricity) 4 LPC Lars Pensjö C 5 LPG liquefied petroleum gas 4 LPI Linux Professional Institute 5 LPN Lender Participation Notes 4 LPT Line Print Terminal 5 LRG liquefied refinery gases 4 LSB Least Significant Bit 5 Linux Standard Base 5 LSE Load serving entity 4 LSF Load Shift Factor 4 LSI Large-Scale Integration 5 LTL Linear Temporal Logic 5 LTR Left-to-Right 5 LUG Linux User Group 5 LUN Logical Unit Number 5 LV Logical Volume 5 LVD Low Voltage Differential 5 LVM Logical Volume Management 5 LWR light water reactor 4 LXC LinuX Containers 2 LZW Lempel-Ziv-Welch 5 LaaR Load acting as a resource (ERCOT category) (electricity) 4 Low-e low emissivity 4 MAAC Mid Atlantic Area Council (US- geographically within PJM) 4 MAC Mandatory Access Control 5 Media Access Control 5 Media Access Control address 2 MADRI Mid Atlantic Distributed Resources Initiative (US) 4 MAIN Mid America Interconnected Network (US) 4 MAN Metropolitan Area Network 5 MANET Mobile Ad-Hoc Network 5 MAOP Maximum allowable operating pressure 4 MAPI Messaging Application Programming Interface 5 MAPP Mid Continent Area Power Pool (US) 4 MB Megabyte 5 MBCS Multi Byte Character Set 5 MBD million barrels per day 4 Model-Based Design 5 MBOED One million barrels of oil equivalent(EU) 4 MBR Market based Rates 4 Master Boot Record 5 MBS Macro economic Budget Support 4 mortgage-backed security 3 MCA Micro Channel Architecture 5 Microsoft Certified Architect 5 MCAD Microsoft Certified Application Developer 5 MCAS Microsoft Certified Application Specialist 5 MCDBA Microsoft Certified DataBase Administrator 5 MCDST Microsoft Certified Desktop Support Technician 5 MCITP Microsoft Certified Information Technology Professional 5 MCM Microsoft Certified Master 5 MCP Microsoft Certified Professional 5 MCPD Microsoft Certified Professional Developer 5 MCSA Microsoft Certified Systems Administrator 5 MCSD Microsoft Certified Solution Developer 5 MCSE Microsoft Certified Systems Engineer 5 MCT Microsoft Certified Trainer 5 MCTS Microsoft Certified Technology Specialist 5 MDA Mail Delivery Agent 5 Model-Driven Architecture 5 Monochrome Display Adapter 5 MDAS Meter Data Acquisition System 4 MDD Maximum Daily Delivery Obligations 4 MDD/MDSD Model-Driven (Software) Development 5 MDDQ Maximum Daily Delivery Quantity 4 MDF Main Distribution Frame 5 MDI Multiple Document Interface 5 MDM Meter Data Management 4 MDQ Maximum Daily Quantities 4 ME [Windows] Millennium Edition 5 MECS Manufacturing Energy Consumption Survey 4 MEDREP Mediterranean Renewables Energy Partnership 4 MEF modified energy factor (clothes washers) 4 MER Maximum efficient rate 4 MERC Mobile Emission Reduction Credit (MERC) (US) 4 MF Medium Frequency 5 MFC Microsoft Foundation Classes 5 MFM Modified Frequency Modulation 5 MFV Modified fixed variable rate 4 MGCP Media Gateway Control Protocol 5 MHz Megahertz 5 MIB Management Information Base 5 MIC Month on Month / Month over Month 3 MICR Magnetic Ink Character Recognition 5 MIDI Musical Instrument Digital Interface 5 MIMD Multiple Instruction, Multiple Data 5 MIME Multipurpose Internet Mail Extensions 5 MIMO Multiple-Input Multiple-Output 5 MINHERS Mortgage Industry National Home Energy Rating Systems Standards 4 MINIX MIni-uNIX 5 MIPS Million Instructions Per Second 5 Microprocessor without Interlocked Pipeline Stages 5 MIS Management Information Systems 5 MISD Multiple Instruction, Single Data 5 MISO Midcontinent Independent System Operator, Inc. A regional transmission organization. (US) 4 MIT Massachusetts Institute of Technology 5 MLP Maximum lawful price 4 MLRA Major Land Resource Areas 4 MM Used to denote million in gas usage 4 MMBtu 1 million British thermal units, same as dekatherm 4 MMC Market Monitoring Center 4 MMCF one million cubic feet (measurement of natural gas) 4 MMCFD one million cubic feet per day 4 MMDS Mortality Medical Data System 5 MMGAL one million gallons 4 MMGAL/D one million gallons per day 4 MMI Man Machine Interface. 5 MMIO Memory-Mapped I/O 5 MMORPG Massively Multiplayer Online Role-Playing Game 5 MMS Minerals Management Service (US) 4 MMST one million short tons 4 MMU Memory Management Unit 5 MMX Multi-Media Extensions 5 MMbbl/d one million barrels of oil per day 4 MNG Multiple-image Network Graphics 5 MODFLOW model of groundwater flow 4 MOM Message-Oriented Middleware 5 MOO MUD Object Oriented 5 MOP Meta-Object Protocol 5 MOQ Memorandum Of Understanding 3 MOS Microsoft Office Specialist 5 MOSFET Metal-Oxide Semiconductor Field Effect Transistor 5 MOTD Message Of The Day 5 MOU Memorandum of Understanding 4 MOUS Microsoft Office User Specialist 5 MOV Apple QuickTime Multimedia File 5 MOX mixed oxide fuel (nuclear) 4 MPAA Motion Picture Association of America 5 MPC Maximum Retail Price 3 MPEG Motion Pictures Experts Group 5 MPG Miles per gallon 4 MPL Mozilla Public License 5 MPLS Multiprotocol Label Switching 5 MPU Microprocessor Unit 5 MRO Midwest Reliability Organization (US) 4 MS Memory Stick 5 Microsoft 5 MS-DOS Microsoft DOS 5 MSA metropolitan statistical area 4 Mail Submission Agent 5 MSB Most Significant Bit 5 MSDN Microsoft Developer Network 5 MSHA Mine Safety and Health Administration (US) 4 MSI Medium-Scale Integration 5 Message Signaled Interrupt 5 Microsoft Installer 5 MSOD Manufacturer's Suggested Retail Price 3 MSW Municipal solid waste 4 MT Machine Translation 5 MTA Mail Transfer Agent 5 Microsoft Technology Associate 5 MTBE methyl tertiary butyl ether 4 MTBF Mean Time Between Failures 5 MTD Month-to-date 3 MTEF Medium Term Expenditure Framework 4 MTEP Midwest ISO Transmission Expansion Plan 2005 (US) 4 MTU Maximum Transmission Unit 5 2 MUA Mail User Agent 5 MUD Multi-User Dungeon 5 MVA Megavolt amperes (one million volt amperes) 4 MVC Model-View-Controller 5 MVG minimum ventilation guideline (building tightness) 4 MVL minimum ventilation level (building tightness) 4 MVP Most Valuable Professional 5 MVS Multiple Virtual Storage 5 MW Megawatt (one million watts) 4 MWC Mobile World Congress 5 N[edit] NAV – Net asset value 3 MWE megawatt electric 4 MWh Megawatt hour (one million watt hours) 4 MX Mail exchange 5 MXF Material Exchange Format 5 Mb Megabit 5 Mcf Roman numeral "M" for one thousand cubic feet (measurement of natural gas) 4 MoBo Motherboard 5 Mt one million tons (ambiguous as to whether short tons or metric tons) —one Metric ton 4 Mtoe One million tons of oil equivalent(EU) 4 Muni Municipality 4 N2O nitrous oxide 4 NAAQS National Ambient Air Quality Standards (US) 4 NACK Negative ACKnowledgement 5 NAECA National Appliance Energy Conservation Act 4 NAESB North American Energy Standards Board (formerly GISB) 4 NAFTA North American Free Trade Agreement 4 NAICS North American Industry Classification System 4 NAK Negative AcKnowledge Character 5 NAP National Renewable Energy Action Plan 4 NARUC National Association of Regulatory Utility Commissioners (US) [1] 4 NAS United States National Academy of Sciences 4 Network-Attached Storage 5 NASM Netwide ASseMbler 5 NASPI North American Synchrophasor Initiative 4 NASUCA National Association of Utility Consumer Advocates(US) 4 NAT Network Address Translation 5 NATC Non Recallable Available Transfer Capability 4 NAV Non-Circumvent and Non-Disclosure 3 NBS National Bureau of Standards (US) 4 NCBO Non-Circumvent and Non-Disclosure 3 NCD Non coincidental Demand 4 NCEP National Council on Electricity Policy (US) [2] 4 NCP NetWare Core Protocol 5 NCQ Native Command Queuing 5 NCSA National Center for Supercomputing Applications 5 NCSL National Conference of State Legislatures (US) 4 NDA Non-Disclosure Agreement 3 NDPS Novell Distributed Print Services 5 NDS Novell Directory Services 5 NEA The National Energy Act of 1978 (US) 4 NEB National Energy Board (Canada) 4 NEDRI New England Distributed Resources Initiative (US) 4 NEP Network Equipment Provider 5 NEPA National Environmental Policy Act (US) 4 NEPOOL New England Power Pool 4 NERC North American Electric Reliability Council 4 NEXT Near-End CrossTalk 5 NFA Nondeterministic Finite Automaton 5 NFC Near field communication 5 NFS Network File System 5 2 NGA Natural Gas Act (US) 4 NGAA Natural Gasoline Association of America (US) 4 NGL natural gas liquids 4 aNGeL 5 NGPA Natural Gas Policy Act of 1978 (US) 4 NGPL Natural gas plant liquids 4 NGPSA Natural Gas Pipeline Safety Act of 1968 (US) 4 NGSA Natural Gas Supply Association (US) 4 NGSCB Next-Generation Secure Computing Base 5 NGV Natural gas vehicle 4 NHPA National Historic Preservation Act (US) 4 NI National Instruments 5 NIC Network Interface Controller 5 NIETC National Interest Electric Transmission Corridor (US) 4 NII Net Interest Income 3 NIM No Internal Message 5 Net Operating Assets 3 NIMBY Not in my backyard regarding siting of energy generation and transmission infrastructure. 4 NIO New I/O 5 NIST National Institute of Standards and Technology 5 NITC Normal Incremental Transfer Capability 4 NLP Natural Language Processing 5 NLS Native Language Support 5 NMI Non-Maskable Interrupt 5 NNTP Network News Transfer Protocol 5 NOAA National Oceanic and Atmospheric Administration (US) 4 NOC National Oil Company 4 Network Operations Center 5 NOI Notice of Intent or Notice of Inquiry or Notice of Investigation 4 Net Operating Income 3 NOP No OPeration 5 NOPAT Non-performing loan 3 NOPR Notice of Proposed Rulemaking (US) 4 NORDEL association of Nordic electric system operators, comprising Denmark, Finland, Norway, Sweden 4 NOS Network Operating System 5 NOx nitrogen oxides 4 NP Nondeterministic Polynomial time 5 NPCC Northeast Power Coordinating Council (US) 4 NPL Netscape Public License 5 NPTL Native POSIX Thread Library 5 NPU Network Processing Unit 5 NPV Net Present Value 4 3 NRC Nuclear Regulatory Commission (US) 4 NRCS National Resource Conservation Service (US) 4 NRECA National Association of Rural Electric Cooperatives (US) 4 NREPA National Resource and Environmental Protection Act (US) 4 NRI National Rivers Inventory (US) 4 NRIS Network Resource Interconnection Service (electricity) 4 NS Netscape 5 NSA Noise sensitive area 4 National Security Agency 5 NSPR Netscape Portable Runtime 5 NSS Novell Storage Service 5 Network Security Services 5 Name Service Switch 5 NT New Technology 5 NTAC Northwest Transmission Assessment Committee (US) 4 NTE Not To Exceed 3 NTFS NT Filesystem 5 NTLM NT Lan Manager 5 NTP Network Time Protocol 5 2 NUG Non Utility Generator 4 NUMA Non-Uniform Memory Access 5 NURBS Non-Uniform Rational B-Spline 5 NURE national uranium resource evaluation (US) 4 NVR Network Video Recorder 5 NVRAM Non-Volatile Random Access Memory 5 NYDER New York Department of Environmental Resources 4 NYISO New York Independent System Operator, Inc. (US) 4 NYMEX New York Mercantile Exchange 4 O[edit] OC – Opportunity Cost 3 NYPSC New York Public Service Commission 4 NYSERDA New York State Energy Research and Development Authority 4 NaN Not a Number 5 NetBIOS Network Basic Input/Output System 5 O&M Operation and Maintenance Expenses 4 O3 Ozone 4 OASIS Open Access Same-Time Information System 4 Organization for the Advancement of Structured Information Standards 5 OAT Operational Acceptance Testing 5 OATT Open Access Transmission Tariff (US) 4 OBSAI Open Base Station Architecture Initiative 5 OCF Organisation for Economic Co-operation and Development 3 OCS Outer Continental Shelf (oil) 4 OCSLA Outer Continental Shelf Lands Act (oil) 4 ODBC Open Database Connectivity 5 ODS oxygen depletion sensor 4 OECD Organization for Economic Cooperation and Development 4 OEM original equipment manufacturers 4 Original Equipment Manufacturer 5 3 OES Open Enterprise Server 5 OFO Operational Flow Order 4 OFTC Open and Free Technology Community 5 OFX Open Financial Exchange 2 OIBDA Operating Income Before Depreciation And Amortization 3 OID Object Identifier 5 OLAP Online Analytical Processing 5 OLE Object Linking and Embedding 5 OLED Organic Light Emitting Diode 5 OLPC One Laptop per Child 5 OLTP Online Transaction Processing 5 OMF Object Module Format 5 OMG Object Management Group 5 OMP Operation and Maintenance Plan 4 OMR Optical Mark Reader 5 OO Object-Oriented 5 OpenOffice 5 OOE Out-of-Order Execution 5 OOM Out Of Memory 5 OOP Object-Oriented Programming 5 OOTB Out of the box 5 OOo OpenOffice.org 5 OPEC Organization of Petroleum-Exporting Countries (oil) 4 OPEX Over-the-counter (finance) 3 OPML Outline Processor Markup Language 5 OPRG oxygenated fuels program reformulated gasoline (oil) 4 ORB Object Request Broker 5 ORM Object-Relational Mapping 5 ORNL Oak Ridge National Laboratory (U.S.) (nuclear) 4 OS Open Source 5 Operating System 5 Operačn&#237; Syst&#233;m 2 OSA Ochrann&#253; svaz autorsk&#253; 2 OSCON O'Reilly Open Source CONvention 5 OSDN Open Source Developer Network 5 OSHA U.S. Department of Labor Occupational Safety and Health Administration 4 OSI Open Source Initiative 5 Open Systems Interconnection 5 OSPF Open Shortest Path First 5 OSS Open Sound System 5 Open-Source Software 5 Operations Support System 5 OSTG Open Source Technology Group 5 OTAG Ozone Transport Assessment Group 4 OTDF Outage Transfer Distribution Factor 4 OTEC ocean thermal energy conversion (electricity) 4 OUI Organisationally Unique Identifier 5 Ontario IESO Ontario Independent Electricity System Operator (Canada) 4 OoOE Out-of-Order Execution 5 P&L Profit and Loss 3 P/E Price-to-earnings ratio 3 P2P Peer-To-Peer 5 PA Planning Authority —Programmatic Agreement 4 Purchasing agent 3 Promotional Activity 3 PADD Petroleum Administration for Defense Districts (US) 4 PAN Personal Area Network 5 PAP Password Authentication Protocol 5 PARC Palo Alto Research Center 5 PAT Profit After Tax 3 PATA Parallel ATA 5 PBR pebble bed reactor (nuclear) 4 PBS Portable Batch System 5 PBT Profit Before Tax 3 PC Personal Computer 5 2 PC DOS Personal Computer Disc Operating System 5 PCB polychlorinated biphenyl 4 Printed Circuit Board 5 Process Control Block 5 PCI Peripheral Component Interconnect 5 2 PCIe PCI Express 5 Peripheral Component Interconnect Express 2 PCL Printer Command Language 5 PCM Project Cycle Management 4 Pulse-Code Modulation 5 PCMCIA Personal Computer Memory Card International Association 5 PCRE Perl Compatible Regular Expressions 5 PCT Programmable Communicating Thermostat (electricity) 4 PD Preliminary Determination 4 Public Domain 5 PDA Personal Digital Assistant 5 PDC Phasor data concentrator. See description in phasor measurement unit article. (electricity) 4 PDCI Pacific Direct Current Intertie (US) (electricity) 4 PDF Portable Document Format 5 PDH Plesiochronous Digital Hierarchy 5 PDP Programmed Data Processor 5 PE Physical Extents 5 PEG to-earnings growth ratio 3 PEM Proton Exchange Membrane 4 PERL Practical Extraction and Reporting Language 5 PFA Please Find Attachment 5 PFC perfluorocarbons 4 PG Peripheral Gateway 5 PG&E Pacific Gas & Electric (US) (electricity) 4 PGA Purchased gas adjustment 4 Pin Grid Array 5 Programmable Gate Array 5 PGO Profile-Guided Optimization 5 PGP Pretty Good Privacy 5 PHA Production Handling Agreement 4 PHEK Q[edit] QC – Quality control or Quality costs 3 PHFFU Plant held for future use 4 PHP Hypertext Preprocessor 5 PI Professional Indemnity (insurance coverage) 3 PIC Peripheral Interface Controller 5 Programmable Interrupt Controller 5 PID Proportional-Integral-Derivative 5 Process ID 5 PIDX Petroleum Industry Data Exchange (oil) 4 PIER Public Interest Energy Research (CEC) 4 PIFUA Powerplant and Industrial Fuel Use Act of 1978 4 PIM Personal Information Manager 5 Platform Independent Model 5 PINE Program for Internet News and Email 5 PIO Programmed Input/Output 5 PJM PJM Interconnection, LLC, a regional transmission organization. (US) (electricity) 4 PKCS Public Key Cryptography Standards 5 PKI Public Key Infrastructure 5 PL/I Programming Language One 5 PL/M Programming Language for Microcomputers 5 PL/P Programming Language for Prime 5 PLC Power line communication (electricity) 4 Power Line Communication 5 Programmable Logic Controller 5 PLD Programmable Logic Device 5 PLMA Peak Load Management Association (US) (electricity) 4 PLT Power Line Telecommunications 5 PM Particulate matter 4 PM&E Protection, mitigation and enhancement 4 PMA Power Marketing Administration or Fed. Power Marketing Agency (US) (electricity) 4 PMM POST Memory Manager 5 PMU Phasor measurement unit (electricity) 4 PNG Portable Network Graphics 5 PNNL Pacific Northwest National Laboratory (DOE) (US) 4 PO Purchase Order 3 POD Point of Delivery 4 POID Persistent Object Identifier 5 POJO Plain Old Java Object 5 POLES Prospective On Long Term Energy Systems 4 POLR Provider of last resort (electricity) 4 POP Point of Presence 5 POP3 Post Office Protocol v3 5 POS Property, plant, and equipment 3 POSIX Portable Operating System Interface, formerly IEEE-IX 5 POST Power-On Self Test 5 PPA Power Purchase Agreement (electricity) 4 PPC PowerPC 5 PPI producer price index 4 Pixels Per Inch 5 PPP Point-to-Point Protocol 5 Public-private partnership 3 Purchase Requisition 3 PPPoA PPP over ATM 5 PPPoE PPP over Ethernet 5 PPR Potential peak reduction 4 PPTP Point-to-Point Tunneling Protocol 5 PR Pull Request 5 PREP Pacific Regional Energy Programme 4 PRESSEA Promotion of Renewable Energy Sources in South East Asia (PRESSEA) 4 PS PostScript 5 PS/2 Personal System/2 5 PSA Professional Services Automation 5 PSC Public Service Commission 4 PSD Prevention of Significant Deterioration 4 PSE Puget Sound Energy (US) (electricity) 4 PSM Platform Specific Model 5 PSU Power Supply Unit 5 PSVI Post-Schema-Validation Infoset 5 PTDF Power Transfer Distribution Factor (electricity) 4 PTP Point to Point Transmission Service (electricity) 4 PTS-DOS PhysTechSoft - Disk Operating System 5 PUC Public Utility Commission (electricity) 4 PUD Public Utility District (electricity) 4 PUHCA Public Utility Holding Company Act of 1935 (US) (electricity) 4 PURPA Public Utility Regulatory Policies Act of 1978 (US) (electricity) 4 PV photovoltaic (solar) 4 Physical Volume 5 PVC photovoltaic cell (solar) 4 polyvinyl chloride 4 PVG Physical Volume Group 5 PVR Personal Video Recorder 5 PWR pressurized water reactor (nuclear) 4 PX Power exchange 4 PXE Preboot Execution Environment 5 PXI PCI eXtensions for Instrumentation 5 PaaS Platform as a Service 5 PnP Plug-and-Play 5 PoE Power over Ethernet 4 5 Prim Primary (electricity) nuclear, hydro, geothermal, wind, solar 4 QA Quality Assurance 5 QDR Quad Data Rate 5 QF qualifying facility 4 QFP Quad Flat Package 5 QOTD Quote of the Day 5 QSE Qualifying scheduling entity 4 QSOP Quarter Small Outline Package 5 QTAM Queued Teleprocessing Access Method 5 QUAD 1015 Btu (a quadrillion in the short scale) 4 QoQ Quarter on quarter 3 QoS Quality of Service 5 Qt Quasar Toolkit 5 R-value thermal resistance 4 R/P Reserve on Production —Reserves to Production 4 RAB Regional Advisory Body (US) 4 RAC Refiners' acquisition cost 4 RACF Resource Access Control Facility 5 RAD Rapid Application Development 5 RADIUS Remote Authentication Dial In User Service 5 RAID Redundant Array of Independent Disks 5 Redundant Array of Inexpensive Disks 5 RAII Resource Acquisition Is Initialization 5 RAIT Redundant Array of Inexpensive Tapes 5 RAM Random Access Memory 5 2 RAP Regulatory Assistance Project 4 RAR Reasonable assured resources 4 RARP Reverse Address Resolution Protocol 5 RAS Remedial Action Scheme 4 Reliability, Availability and Serviceability 5 Remote Access Service 5 RATC Recallable Available Transmission Capability 4 RBA Retained Earnings 3 RBMK Russian: Реактор Большой Мощности Канальный = "High Power Channel Type Reactor" (RU) 4 RBOB reformulated gasoline blendstock for oxygenate blending 4 RC Reliability Coordinator 4 Region Code 5 Release Candidate 5 Run Commands 5 RCIS Reliability Coordinator Information System 4 RCRA Resource Conservation and Recovery Act (US) 4 RCS Revision Control System 5 RDBMS Relational Database Management System 5 RDC Remote Desktop Connection 5 RDF refuse derived fuel (electricity) 4 Resource Description Framework 5 RDM Relational Data Model 5 RDOS Real-time Disk Operating System 5 RDS Remote Data Services 5 REA Rural Electrification Administration (US) 4 RECS Residential Energy Consumption Survey (US) 4 REEEP Renewable Energy and Energy Efficiency Partnership 4 REFAL Recursive Functions Algorithmic Language 5 RER Renewable Energy Rider 4 RES Renewable energy source 4 RESNET Residential energy services network 4 REST Representational State Transfer 5 RET/EE IAF Renewable Energy Technology & Energy Efficiency Investment Advisory Facility 4 RF Radio frequency 4 Radio Frequency 5 RFA Regulatory Flexibility Act (US) 4 RFC ReliabilityFirst Corporation (US) (electricity) 4 Request For Comments 5 RFG reformulated gasoline (oil) 4 RFI Request for Interchange 4 Radio Frequency Interference 5 RFID Radio Frequency Identification 5 RFP Request for proposals 4 Request for Proposal 3 RGB Red, Green, Blue 5 RGBA Red, Green, Blue, Alpha 5 RGGI Regional Greenhouse Gas Initiative 4 RGS Renewable Generating System 4 RHEL Red Hat Enterprise Linux 5 RHL Red Hat Linux 5 RIA Rich Internet Application 5 RIAA Recording Industry Association of America 5 RIP Raster Image Processor 5 Routing Information Protocol 5 RIR Regional Internet registry 5 RISC Reduced Instruction Set Computer 5 RISC OS Reduced Instruction Set Computer Operating System 5 RJE Remote Job Entry 5 RLE Run-Length Encoding 5 RLL Run-Length Limited 5 RM Rulemaking 4 RMATS Rocky Mountain Area Transmission Study (US) (electricity) 4 RMI Remote Method Invocation 5 RMR Reliability Must Run (electricity) 4 RMS Richard Matthew Stallman 5 RMU Removal Units 4 ROA Return of Assets (finance) 4 Return On Capital Employed 3 ROE Return of Equity (finance) 4 Return on Equity 3 ROFR Right of First Refusal (finance) 4 ROI Return on Investment 4 3 ROIC Return on Invested Capital 3 ROM Read Only Memory 5 ROM-DOS Read Only Memory - Disk Operating System 5 ROMB Read-Out Motherboard 5 RONA Return on Sales 3 ROW Right of Way 4 RPC Remote Procedure Call 5 RPG Report Program Generator 5 RPM Reliability Pricing Model. See explanation in electricity market#Electricity market experience. (electricity) 4 RPM Package Manager 5 Redhat Pakage Manager 2 RR Research and Development 3 RRAS Routing and Remote Access Service 5 RRO Regional reliability organization (US) 4 RSA Rivest Shamir Adleman 5 RSE Revenue Stream Estimate (finance) 4 relative standard error 4 RSI Repetitive Strain Injury 5 RSS Radio Service Software 5 Rich Site Summary, RDF Site Summary, or Really Simple Syndication 5 Rich Site Summary 2 RTAI Real-Time Application Interface 5 RTBM Real-Time Balancing Market (electricity) 4 RTC Real-Time Clock 5 RTE Real-Time Enterprise 5 RTEMS Real-Time Executive for Multiprocessor Systems 5 RTEP Regional transmission expansion plan 4 RTG Regional Transmission Group (US) 4 RTL Right-to-Left 5 RTO Regional transmission organization (US) 4 RTOS Real-Time Operating System 5 RTP Real time Pricing 4 Real-time Transport Protocol 5 RTS Ready To Send 5 RTSP Real Time Streaming Protocol 5 2 RTTI Run-time Type Information 5 RTU Remote Terminal Unit 4 RUS Rural Utilities Service 4 RVP Reid vapor pressure 4 RWD Responsive Web Design 5 S/MIME Secure/Multipurpose Internet Mail Extensions 5 SAAS as-a-Service 3 SAN Storage Area Network 5 SAS Serial attached SCSI 5 Serial-Attached SCSI 2 SATA Serial ATA 5 Serial AT Attachment 2 SAX Simple API for XML 5 SBOD Spinning Beachball of Death 5 SBP-2 Serial Bus Protocol 2 5 SBU Standard Build Unit 5 SC shading coefficient (windows) 4 SCADA Supervisory control and data acquisition a remote control and telemetry system used to monitor and control the electrical system 4 Supervisory Control And Data Acquisition 5 SCBA Securities and Exchange Commission 3 SCE Southern California Edison (US) 4 SCID Source Code in Database 5 SCM Software Configuration Management 5 Source Code Management 5 Supply Chain Management 3 SCO Stranded Cost Obligation (finance) 4 SCP Secure Copy 5 Secure copy 2 SCPI Standard Commands for Programmable Instrumentation 5 SCR Special Case Resources (US- NYISO category) 4 Selective Catalytic Reduction 4 SCSA Secure Content Storage Association 5 SCSI Small Computer System Interface 5 SCTP Stream Control Transmission Protocol 5 SD Secure Digital 5 SDDL Security Descriptor Definition Language 5 SDG&E San Diego Gas & Electric (US) 4 SDH Synchronous Digital Hierarchy 5 SDI Single Document Interface 5 SDIO Secure Digital Input Output 5 SDK Software Development Kit 5 2 SDL Simple DirectMedia Layer 5 SDN Service Delivery Network 5 SDP Session Description Protocol 5 SDR Software-Defined Radio 5 SDRAM Synchronous Dynamic Random Access Memory 5 SDSL Symmetric DSL 5 SE Single Ended 5 SEA Strategic Environmental Assessment 4 SEC Securities and Exchange Commission (US) 4 Single Edge Contact 5 SEER seasonal energy efficiency ratio 4 seasonal E efficiency ratio 4 SEFI Sustainable Energy Finance Initiative 4 SEI Software Engineering Institute 5 SEIA Sustainable Energy Industry Association 4 SEO Search Engine Optimization 5 SERC Southeastern Electric Reliability Council (US) 4 SF6 sulfur hexafluoride 4 SFC Solid oxide fuel cell (transportation) 4 SFEIS Supplemental Final Environmental Impact Statement (US) 4 SFTP Secure FTP 5 Simple File Transfer Protocol 5 SSH File Transfer Protocol 5 SFV Straight Fixed Variable 4 SG&A Small and Medium Enterprises 3 SGI Silicon Graphics, Incorporated 5 SGML Standard Generalized Markup Language 5 SGR State game refuge (US) 4 Select Graphic Rendition 5 SHA Secure Hash Algorithm 5 SHDSL Single-pair High-speed Digital Subscriber Line 5 SHGC solar heat gain coefficient 4 SHPO State Historic Preservation Office (US) 4 SI International System of Units (Système international d'unités) 4 SIC Standard Industrial Classification 4 SIGCAT Special Interest Group on CD-ROM Applications and Technology 5 SIGGRAPH Special Interest Group on Graphics 5 SIMD Single Instruction, Multiple Data 5 SIMM Single Inline Memory Module 5 SIP Session Initiation Protocol 5 Supplementary Ideographic Plane 5 SIR savings-to-investment ratio (energy conservation investments) 4 SISD Single Instruction, Single Data 5 SISO Single-Input and Single-Output 5 SLA Specific leakage area 4 Service Level Agreement 3 SLED SUSE Linux Enterprise Desktop 5 SLES SUSE Linux Enterprise Server 5 SLI Scalable Link Interface 5 SLIP Serial Line Internet Protocol 5 SLM Service Level Management 5 SLOC Source Lines of Code 5 SMA SubMiniature version A 5 SMB Server Message Block 5 SMBIOS System Management BIOS 5 SME Subject Matter Expert 5 SMIL Synchronized Multimedia Integration Language 5 SMP Supplementary Multilingual Plane 5 Symmetric Multi-Processing 5 SMPs Special Marketing Programs 4 SMS Short Message Service 5 System Management Server 5 SMT Simultaneous Multithreading 5 SMTP Simple Mail Transfer Protocol 5 Simple Mail Transport Protocol 2 SNA Systems Network Architecture 5 SNG Synthetic Natural Gas or Substitute Natural Gas 4 SNMP Simple Network Management Protocol 5 SNTP Simple Network Time Protocol 5 SO-DIMM Small Outline DIMM 5 SO2 Sulfur dioxide 4 SOA Service-Oriented Architecture 5 SOAP Simple Object Access Protocol 5 Symbolic Optimal Assembly Program 5 Simple Object Access Protocol, 2 SOE Standard Operating Environment 5 SOHO Small Office/Home Office 5 3 SOI Silicon On Insulator 5 SOL System Operating Limit 4 SOP Standard Operating Procedure 3 SOPA Stop Online Piracy Act 5 SOW Statement Of Work 3 SOX Sarbanes-Oxley 3 SP Service Pack 5 SPA Single Page Application 5 SPARC Scalable Processor Architecture 5 SPB Simple Payback (energy conservation investments) 4 SPCC Spill Prevention, Containment and Countermeasure Plan SPM—Synchronized phasor measurement- a WAMS network with synchrophasor sensors (PMUs). (electricity) 4 SPF Sender Policy Framework 5 SPI Serial Peripheral Interface 5 Stateful Packet Inspection 5 SPM Software project management 5 SPMD Single Program, Multiple Data 5 SPP Southwest Power Pool Inc., a regional transmission organization (US) —Statewide Pricing Pilot (US-California) 4 SPR Strategic Petroleum Reserve (US) 4 SPS Special Protection System 4 SQL Structured Query Language 5 Server Query Language 2 SR Speculative resources For example, regarding uranium deposits. (nuclear) 4 SRAM Static Random Access Memory 5 SROI Social return on investment 3 SRP Salt River Agricultural Improvement & Power District (US) (electricity) 4 SSA Static Single Assignment 5 SSD Software Specification Document 5 Solid-State Drive 5 Solid State Drive 2 SSE steady-state efficiency 4 Streaming SIMD Extensions 5 SSG WI PWG Seams Steering Group of Western Interconnection PlanningWork Group (US) (electricity) 4 SSH Secure Shell 5 SSI Server Side Includes 5 Single-System Image 5 Small-Scale Integration 5 SSID Service Set Identifier 5 SSL Secure Socket Layer 5 Secure Sockets Layer 2 SSM Synchronized system measurement-a WAMS with synchronous sensors in addition to PMUs. See Phasor networks. 4 SSP Supplementary Special-purpose Plane 5 SSSE Supplementary Streaming SIMD Extensions 5 STEP Southwest Transmission Expansion Plan group (US) (electricity) 4 SUS Single UNIX Specification 5 SUSE Software und System-Entwicklung 5 SVC Static VAR compensator (electricity) 4 Scalable Video Coding 5 SVD Structured VLSI Design 5 SVG Scalable Vector Graphics 5 SVGA Super Video Graphics Array 5 SVN Subversion 2 SWAT Southwest Area Transmission (US) (electricity) 4 SWF Shock Wave Flash 5 SWT Standard Widget Toolkit 5 SWU Separative work unit 4 SaaS Software as a Service 5 SoC System-on-a-Chip 5 St Sales and operations planning 3 Sysop System operator 5 T&D Transmission & Distribution 4 TAME Tertiary amyl methyl ether 4 TAO Track-At-Once 5 TAPS Trans-Alaska Pipeline System (natural gas) 4 TASM Turbo ASseMbler 5 TB TeraByte 5 To Be Completed 3 TBA tertiary butyl alcohol 4 TBL Transmission business line (electricity) 4 TBS Town border station 4 TCO Total Cost of Ownership 3 TCP Transmission Control Protocol 5 2 TCP/IP Transmission Control Protocol/Internet Protocol 5 TCR Transition Cost Recovery (Mechanism) 4 TCU Telecommunication Control Unit 5 TCV Total Shareholder Return 3 TDMA Time Division Multiple Access 5 2 TDP Thermal Design Power 2 TDU Transmission Dependent Utility (electricity) 4 TEFRA Tax Equity and Fiscal Responsibility Act of 1985 4 TEN Trans-European Networks (electricity) 4 TFT Thin Film Transistor 5 TFTP Trivial File Transfer Protocol 5 TI Texas Instruments 5 TLA Three-Letter Acronym 5 TLD Top-Level Domain 5 TLR Procedures Transmission Line Loading Relief Procedures (electricity) 4 TLS Thread-Local Storage 5 Transport Layer Security 5 TLV Type-length-value 5 TNC Terminal Node Controller 5 Threaded Neill-Concelman connector 5 TO Transmission owner (electricity) 4 TOP Transmission Operator (electricity) 4 TOTW Time Off for Time Worked 3 TOU Time of use (rate) (electricity) 4 TPF Transaction Processing Facility 5 TQM Total Quality Management 3 TRM Transmission Reliability Margin (electricity) 4 TROFF Trace Off 5 TRON Trace On 5 The Real-time Operating system Nucleus 5 TRSDOS Tandy Radio Shack - Disk Operating System 5 TSO Transmission System Operator) (electricity) 4 Time Sharing Option 5 TSP Traveling Salesman Problem 5 TSR Transmission Service Request (electricity) 4 Terminate and Stay Resident 5 TTA True Tap Audio 5 TTC Total Transfer Capability (electricity) 4 TTF TrueType Font 5 TTL Transistor-Transistor Logic 5 Time To Live 5 TTS Text-to-Speech 5 TTY Teletype 5 TUCOWS The Ultimate Collection of Winsock Software 5 TUG TeX Users Group 5 TVA Tennessee Valley Authority (US) (electricity) 4 TW terawatt (one trillion watts) (measurement) 4 TWAIN Technology Without An Interesting Name 5 TWH terawatt-hour (one trillion watt hours) 4 Tcf Trillion cubic feet (measurement) 4 Tcl Tool Command Language 5 Transco Transmission Company (US) (electricity) —Transcontinental Pipeline (US) (natural gas) 4 U-value thermal transmittance (also called U-factor) 4 U.S.C. United States Code 4 U3O8 triuranium octaoxide (nuclear) 4 UAAG User Agent Accessibility Guidelines 5 UAC User Account Control 5 UAE United Arab Emirates (oil) 4 UART Universal Asynchronous Receiver/Transmitter 5 UAT User Acceptance Testing 5 UCAP Unforced Capacity (electricity) 4 UCS Universal Character Set 5 UCTE Union for the Coordination of the Transport of Electricity, the power transmission system of continental Europe 4 UDDI Universal Description, Discovery, and Integration 5 UDMA Ultra DMA 5 UDP User Datagram Protocol 5 User Datagrap Protocol 2 UEFI Unified Extensible Firmware Interface 5 UF6 uranium hexaflouride (nuclear) 4 UFLS Under frequency load shedding (electricity) 4 UHF Ultra High Frequency 5 UHVAC Ultra High Voltage Alternating Current (electricity) 4 UHVDC Ultra High Voltage Direct Current (electricity) 4 UI User Interface 5 UL Upload 5 ULA Uncommitted Logic Array 5 ULCC Ultra Large Crude Carrier (oil) 4 UMA Upper Memory Area 5 UMB Upper Memory Block 5 UML Unified Modeling Language 5 User-Mode Linux 5 UMPC Ultra-Mobile Personal Computer 5 UMTRA Uranium Mill Tailings Radiation Control Act of 1978 (US) 4 UNC Universal Naming Convention 5 UNCCD United Nations Convention to Combat Desertification 4 UNDESA UN Department of Economic and Social Affairs 4 UNDP United Nations Development Programme 4 UNECE United Nations Economic Commission for Europe 4 UNEP United Nations Environment Programme 4 UNFCCC United Nations Framework Convention on Climate Change 4 UO2 uranium dioxide (nuclear) 4 UO3 uranium trioxide (nuclear) 4 UO4 uranyl peroxide (nuclear) 4 UOX uranium oxide (nuclear) 4 UPS Uninterruptible Power Supply 5 URI Uniform Resource Identifier 5 URL Uniform Resource Locator 5 2 URN Uniform Resource Name 5 URR Ultimate Recoverable Resources 4 US DOE United States Department of Energy 4 USB Universal Serial Bus 5 2 USBR United States Bureau of Reclamation 4 USCE United States Army Corps of Engineers 4 USGS United States Geological Survey 4 USP V[edit] VAD – Value-Added Distributor 3 USR U.S. Robotics 5 UTC Coordinated Universal Time 5 UTF Unicode Transformation Format 5 UTP Unshielded Twisted Pair 5 UUCP Unix to Unix Copy 5 UUID Universally Unique Identifier 5 UUN Universal User Name 5 UVC Universal Virtual Computer 5 UVLS Under voltage load shedding (electricity) 4 UX User Experience 5 V Volt (measurement) 4 VA Volt-ampere (measurement) 4 VAR Added Reseller 3 VAT Value-Added Tax 3 VAWT vertical axis wind turbine (wind) 4 VAX Virtual Address eXtension 5 VB Visual Basic 5 VBA Visual Basic for Applications 5 VBS Visual Basic Script 5 VC Venture Capital 3 VCPI Virtual Control Program Interface 5 VCS Version Control System 2 VDSL Very High Bitrate Digital Subscriber Line 5 VESA Video Electronics Standards Association 5 VFAT Virtual FAT 5 VFS Virtual File System 5 VG Volume Group 5 VGA Video Graphics Array 5 Video Graphics Adapter 5 VHF Very High Frequency 5 VIN vehicle identification number (US) (transportation) 4 VLAN Virtual Local Area Network 5 VLB Vesa Local Bus 5 VLCC very large crude carrier (oil) 4 VLF Very Low Frequency 5 VLIW Very Long Instruction Word 5 VLSI Very-Large-Scale Integration 5 VLSM Variable Length Subnet Mask 5 VM Virtual Machine 5 Virtual Memory 5 VMT vehicle miles traveled (transportation) 4 VNC Virtual Network Computing 5 2 VOC volatile organic compound 4 VOD Video On Demand 5 VPN Virtual Private Network 5 2 VPP Variable peak pricing (electricity) 4 VPS Virtual Private Server 2 VPU Visual Processing Unit 5 VR Virtual Reality 5 VRAM Video Random Access Memory 5 VRML Virtual Reality Modeling Language 5 VSA Voltage stability analysis 4 VSAM Virtual Storage Access Method 5 VSAT Very Small Aperture Terminal 5 VT Video Terminal? 5 VTAM Virtual Telecommunications Access Method 5 VoIP Voice over Internet Protocol 5 W Watt 4 W3C World Wide Web Consortium 5 WACC work 3 WACOG weighted average cost of gas 4 WAFS Wide Area File Services 5 WAI Web Accessibility Initiative 5 WAIS Wide Area Information Server 5 WAMS Wide area measurement system- see description in phasor measurement unit article. (electricity) 4 WAN Wide Area Network 5 WAP Wireless Access Point 5 Wireless Application Protocol 5 WASM Watcom ASseMbler 5 WBEM Web-Based Enterprise Management 5 WCAG Web Content Accessibility Guidelines 5 WCF Windows Communication Foundation 5 WCMC World Conservation Monitoring Centre 4 WCRE World Commission on Renewable Energy 4 WDM Wavelength-Division Multiplexing 5 WDS Wireless Distribution System 2 WEA World Energy Assessment 4 WEC World Energy Council 4 WECC Western Electricity Coordinating Council (US) 4 WEEA World Energy Efficiency Organization 4 WEP Wired Equivalent Privacy 5 WF water factor (clothes washers) 4 WFI Wait For Interrupt 5 WH watthour (measurement) 4 WHO World Health Organisation 4 WHT Withholding Tax 3 WINS Windows Internet Name Service 5 WIRAB Western Interconnection Regional Advisory Body (US) 4 WLAN Wireless Local Area Network 5 WLL With Limited Liability 3 WMA Windows Media Audio 5 WMV Windows Media Video 5 WOL Wake-on-LAN 5 WOR Wake-on-Ring 5 WORA Write once, run anywhere 5 WORE Write once, run everywhere 5 WPA Wi-Fi Protected Access 5 WPAN Wireless Personal Area Network 5 WPF Windows Presentation Foundation 5 WRI World Resources Institute 4 WSCC Western Systems Coordinating Council (US) 4 WSDL Web Services Description Language 5 WSFL Web Services Flow Language 5 WSPP Western Systems Power Pool (US) 4 WSSD World Summit on Sustainable Development 4 WTG Wind turbine generator (wind) 4 WTI West Texas Intermediate (US) 4 Withdraw Voucher Note 3 WTO World Trade Organization 3 WTP Willingness to pay 4 WUSB Wireless Universal Serial Bus 5 WWAN Wireless Wide Area Network 5 WWDC Apple World Wide Developer Conference 5 WWID World Wide Identifier 5 WWN World Wide Name 5 WWW World Wide Web 5 WY Water Year (measurement) 4 WYSIWYG What You See Is What You Get 5 WZC Wireless Zero Configuration 5 WebDAV WWW Distributed Authoring and Versioning 5 WiFi Wireless Fidelity 5 WiMAX Worldwide Interoperability for Microwave Access 5 WinFS Windows Future Storage 5 WoW World of Warcraft 2 XAG XML Accessibility Guidelines 5 XAML eXtensible Application Markup Language 5 XCBL XML Common Business Library 5 XDM X Window Display Manager 5 XDMCP X Display Manager Control Protocol 5 XHTML eXtensible Hypertext Markup Language 5 XILP X Interactive ListProc 5 XML eXtensible Markup Language 5 2 XMMS X Multimedia System 5 XMPP eXtensible Messaging and Presence Protocol 5 XMS Extended Memory Specification 5 XNS Xerox Network Systems 5 XP Cross-Platform 5 Extreme Programming 5 XPCOM Cross Platform Component Object Model 5 XPI XPInstall 5 XPIDL Cross-Platform IDL 5 XPS XML Paper Specification 5 XSD XML Schema Definition 5 XSL eXtensible Stylesheet Language 5 XSL-FO eXtensible Stylesheet Language Formatting Objects 5 XSLT eXtensible Stylesheet Language Transformations 5 XSS Cross-Site Scripting 5 XTF eXtensible Tag Framework 5 eXtended Triton Format 5 XUL XML User Interface Language 5 XVGA Extended Video Graphics Adapter 5 Y2K Year Two Thousand 5 YAAF Yet Another Application Framework 5 YACC Yet Another Compiler Compiler 5 YAML YAML Ain't Markup Language 5 YOY Year-Over-Year 3 YTC Yet-To-Confirm 3 YTD Year-to-date 3 YTG Year-to-go 3 YaST Yet another Setup Tool 5 ZCAV Zone Constant Angular Velocity 5 ZCS Zero Code Suppression 5 ZIF Zero Insertion Force 5 ZIFS Zero Insertion Force Socket 5 ZISC Zero Instruction Set Computer 5 ZMA Zone Multicast Address 5 ZOI Zero One Infinity 5 ZOPA Zone of Possible Agreement 3 References[edit] External links[edit] Business acronyms and abbreviations 3 ZOPE Z Object Publishing Environment 5 ZPL Z-level Programming Language 5 bhp Brake horsepower 4 bin binary 5 bit binary digit 5 bl Barrel 4 bldg. C[edit] CAO – Chief Accounting Officer 3 Break Even Point 3 bps bits per second 5 cc C Compiler 5 dev development 5 disc. Delivery service provider 3 eID electronic ID card 5 eSATA external SATA 5 fsck File System Check 5 hp Horsepower (measurement) 4 iBCS Intel Binary Compatibility Standard 5 iSCSI Internet Small Computer System Interface 5 iSNS Internet Storage Name Service 5 kHz Kilohertz 5 kV Kilovolt (one thousand volts) (measurement) 4 kVA One thousand volt Ampere (measurement) 4 kW Kilowatt (one thousand watts) (measurement) 4 kWE kilowatt electric (measurement) 4 kWh Kilowatt hour (one thousand watt hours) (measurement) 4 koe One kilogram oil equivalent (EU) (measurement) 4 kvar one thousand vars (measurement) 4 lsfo Low sulfur fuel oil 4 mfg. Management 3 msl Mean sea level 4 pip Period Moving Average Cost 3 ppmv Parts Per Million by Volume 4 ppp Purchasing power parity 4 q/q Quarter-to-date 3 regex Regular Expression 5 regexp Regular Expression 5 sbin superuser binary 5 scf Standard cubic foot 4 su superuser 5 tmp temporary 5 toe Ton of oil equivalent (EU) 4 usr user 5 var Volt-ampere reactive (measurement) 4 variable 5 w.r.t With Respect To 3 wo weighted average selling price 3 zcyc Zone of Possible Agreement 3 References[edit] External links[edit] Business acronyms and abbreviations 3 1 Mediawiki acronyms 0 <div id="mw-content-text" lang="en" dir="ltr" class="mw-content-ltr"> <!-- <li><b> </b> 1 0 0 - </li> 2 1 0 2 MediaWiki Lingo 0 mw-lingo-tooltip-abbr"> </span> 1 0 0 mw-lingo-tooltip-definition "> </span> 2 1 0 3 MediaWiki 2 0 </ul> <table style <li> — 1 0 0 </li> 2 1 0 Wikipedia - List of business and finance abbreviations https://en.wikipedia.org/wiki/List_of_business_and_finance_abbreviations 1 -1 150 2016-07-25T17:28:28.072+02:00 3 wiki.zdechov.net terminology http://wiki.zdechov.net/wiki/Terminologie 2 -1 148 2016-07-25T17:28:29.007+02:00 2 Wikipedia - List of energy abbreviations https://en.wikipedia.org/wiki/List_of_energy_abbreviations 3 -1 1466 2016-07-25T17:28:29.844+02:00 4 Wikipedia - List of Computing and IT abbreviations https://en.wikipedia.org/wiki/List_of_computing_and_IT_abbreviations 3 -1 4008 2016-07-25T17:28:31.210+02:00 5