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 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 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 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 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 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 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 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 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 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 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 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 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 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 Content-Scrambling System 5 Closed Source Software 5 Cross-Site Scripting 5 CSV Comma-Separated Values 5 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 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 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 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 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 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 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 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 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 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 FTP File Transfer Protocol 5 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 FWPA Federal Water Power Act (US) 4 FWS Folding White Space 5 FXP File eXchange Protocol 5 FYA For Your Action 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 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 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 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 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 HTTP Hypertext Transfer Protocol 5 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 PCIe PCI Express 5 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 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 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 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 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 SATA Serial ATA 5 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 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 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 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 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 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 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 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 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 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 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 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 URN Uniform Resource Name 5 URR Ultimate Recoverable Resources 4 US DOE United States Department of Energy 4 USB Universal Serial Bus 5 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 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 VOC volatile organic compound 4 VOD Video On Demand 5 VPN Virtual Private Network 5 VPP Variable peak pricing (electricity) 4 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 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 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 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 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 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 -1 145 3 wiki.zdechov.net terminology http://wiki.zdechov.net/wiki/Terminologie 2 -1 74 2 Wikipedia - List of energy abbreviations https://en.wikipedia.org/wiki/List_of_energy_abbreviations 3 -1 733 4 Wikipedia - List of Computing and IT abbreviations https://en.wikipedia.org/wiki/List_of_computing_and_IT_abbreviations 3 -1 1335 5