| Acronym | Sense | Language | Topics |
|---|---|---|---|
| MERCATOR | Mise En Réseau de la Cartographie Appliquée à la Typologie des Ouvrages et des Réseaux | In French | → Electrical engineering |
| MII | Maisons Individuelles Isolées | In French | → Construction |
| MR | Majoration Résidentielle | In French | → Prices |
| MSA | Main Bus Solar Array | In English | |
| MUNEE | Municipal Networks for Energy Efficiency | In English | → Public administration, government |
| NAPE | Narodowa Agencja Poszanowania Energii | In Polish | |
| NEDO | New Energy and Industrial Technology Development Organization | In English | → Organizations and associations → Industry, industrial policy |
| NER | Nordic Energy Research (www.nordicenergy.net) | In English | |
| NERSA | National Energy Regulator of South Africa (www.ner.org.za) | In English | → Central administration → Africa |
| NICE | Nizhny Novgorod Innovation Center for Energy Saving | In English | |
| NIFES | National Industrial Fuel Efficiency Service | In English | → Vehicle engineering |
| NREL | National Renewable Energy Laboratory | In English | → Research institutes |
| NTE | Nouvelles Technologies de l'Énergie | In French | |
| NU | Northeast Utilities | In English | |
| NWS | Neckarwerke Stuttgart AG | In German | |
| NYPA | New York Power Authority | In English | |
| OAMI | Ofgem Approved Meter Installers | In English | → Electrical engineering |
| OCG | Organe de Coupure Général | In French | → Electrical engineering |
| OCRD | Opérateur Commun du Réseau de Distribution | In French | → Electrical engineering |
| OEB | Ordre d'Exécution de Branchement | In French | → Electrical engineering |
| OGK | Optovaya Giéniérirouyouchtchaya Kompaniya = ОГК | Оптовая генерирующая компания | In Russian |
In Russian | → Electrical engineering |
| OIEA | Organismo Internacional de Energía Atómica (www.iaea.org) = IAAE | Internacia Agentejo pri Atom-Energio | In Esperanto = IAEA | International Atomic Energy Agency | In English = AIEA | Agence Internationale de l'Énergie Atomique | In French = AIEA | Agenţia Internaţională pentru Energie Atomică | In Romanian = МААЕ | Международна агенция за атомна енергия | In Bulgarian = AIEA | Agència Internacional de l'Energia Atòmica | In Catalan = MAAE | Mezinárodní agentura pro atomovou energii | In Czech = IAEA | Det Internationale Atomenergiagentur | In Danish = IAEO | Internationale Atomenergieorganisation | In German = סבא"א | הסוכנות הבינלאומית לאנרגיה אטומית | In Hebrew = IAEA | International Atomenergie Agence | In Letzeburgesh = AIEA | Agenzia Internazionale per l'Energia Atomica | In Italian = IAEA | अंतर्राष्ट्रीय परमाणु ऊर्जा अधिकरण | In Hindi = MAAE | Меѓународна агенција за атомска енергија | In Macedonian = МАГАТЭ | Международное агентство по атомной энергии | In Russian = AIEA | Agência Internacional de Energia Atómica | In Portuguese = MAEA | Międzynarodowa Agencja Energii Atomowej | In Polish = МАГАТЕ | Міжнародне агентство з атомної енергії | In Ukrainian = UAEA | Uluslararası Atom Enerji Ajansı | In Turkish = IAEA | สำนักงานพลังงานปรมาณูระหว่างประเทศ | In Thai = EANA | Energia Atomikoaren Nazioarteko Agentzia | In Basque |
In Spanish | → International relations → Nuclear technology |
| OMEGA | Outil pour les Mutuelles des Électriciens et GAziers | In French | → Software → Insurance → Electrical engineering |
| OPEN | Organisation de Producteurs d'Énergie Nucléaire | In French | → Organizations and associations → Nuclear technology |
| ORE | Opérateur de Réseau Électricité | In French | → Electrical engineering |
| ORG | Opérateur de Réseau Gaz | In French | |
| OSGE | Observatoire Statistique du Groupe EDF | In French | → Electrical engineering |
| OTEC | Ocean Thermal Energy Conversion | In English | |
| P3S | Power Systems Supports and Services | In English | → Electrical engineering |
| PA | Puissance Atteinte | In French | |
| PAC | Pile à combustible | In French | → Electrical engineering |
| PAFC | Phosphoric Acid Fuel Cell | In English | → Chemical technology |
| PAN-H | Plan d'Action National sur l'Hydrogène et les piles à combustible | In French | → Chemical technology |
| PANTER | Poste Auxiliaire de Numérisation, de Tracé et d'Études de Réseaux | In French | → Computer-based techniques → Electrical engineering |
| PAPEETE | Pour Améliorer les Performances Énergétiques ET Environnementales | In French | → Environmental technology, water supply, waste management |
| PAZE | Podlaska Agencja Zarzidzania Energii | In Polish | |
| PBDI | Prise de Branchement avec Déclencheur Intégré | In French | |
| PCGN | Point Confort Gaz Naturel | In French | |
| PCM | Photoelectric Cell Module | In English | → Electrical engineering |
| PCS | Power Conversion System | In English | → Electrical engineering |
| PCS | Pouvoir Calorifique Supérieur | In French | |
| PCSM | Pouvoir Calorifique Supérieur Mensuel | In French | |
| PCU | Power Condition Unit | In English | |
| PCU | Power Conditioning Unit | In English | |
| PCU | Power Control Unit | In English | |
| PCU | Power Conversion Unit | In English | |
| PCVS | Pouvoir Calorifique Variable Supérieur | In French | |
| PDB | Power Distribution Box | In English | → Electrical engineering |
| PDCS | Power Distribution and Control Subsystem | In English | |
| PDCU | Power Distribution and Control Unit | In English | |
| PDE | Projectbureau Duurzame Energie | In Dutch | |
| PDE | Producteur Distributeur d'Électricité | In French | → Electrical engineering |
| PDR | Point De Raccordement | In French | |
| PDS | Power Distribution System | In English | |
| PDU | Power Drive Unit | In English | |
| PDUG | Plan de Desserte Urbain Gaz | In French | → Regional planning |
| PE | Primärenergie | In German | |
| PECT | Plan Énergie Climat Territorial | In French | → Regional administration → Meteorology, climatology → Environmental protection |
| PEFMC | Proton Exchange Membrane Fuel Cell | In English | |
| PEMEX | Petróleos Mexicanos (www.pemex.com) | In Spanish | → Mining → Mexico |
| PEMFC | Proton Exchange Membrane Fuel Cell | In English | |
| PENELOPE | Promoting ENergy Efficiency to Local Organisations through dissemination Partnerships in Europe | In English | |
| PG | Power Generation | In English | → Electrical engineering |
| PGA | Power Generating Assembly | In English | → Electrical engineering |
| PGD&CS | Power Generation, Distribution, and Control Subsystem | In English | → Electrical engineering |
| PGN | Professionnel Gaz Naturel | In French | |
| PGNC | Professionnel Gaz Naturel Confort | In French | |
| PGP | Professionnel Gaz Propane | In French | |
| PGS | Power Generation System | In English | → Electrical engineering |
| PHP | Passiefhuis-Platform | In Dutch | → Construction |
| PIU | Power Interface Unit | In English | |
| PL | Power Level | In English | → Electrical engineering |
| PLHX | Payload Heat Exchanger | In English | → Astronautics |
| PMAD | Power Management And Distribution | In English | → Electrical engineering |
| PMC | Plutonia-Molybdenum Cermet | In English | → Nuclear technology |
| PMD | Power Management and Distribution | In English | → Electrical engineering |
| PMG | Pôle Marketing Gaz | In French | |
| PMPH | Provision pour le Maintien du Potentiel Hydraulique | In French | |
| PMS | Power Management System | In English | → Electrical engineering |
| PP | Power Plant | In English | → Electrical engineering |
| PRATIC | PRocédure d'Analyse et de Traitement des Informations Commerciales | In French | → Software → Trade |
| PS | Puissance Souscrite | In French | |
| PSA | Power Switching Assembly | In English | → Electrical engineering |
| PSCU | Power Supply Control Unit | In English | → Electrical engineering |
| PSD | Power Systems Division | In English | → Electrical engineering |
| PSDU | Power and Signal Distribution Unit | In English | → Electrical engineering → Telecommunications |
| PSG | Power Subsystem Group | In English | → Electrical engineering |
| PSI | Power Static Inverter | In English | |
| PSIU | Power and Signal Interface Unit | In English | → Electrical engineering → Telecommunications |
| PSM | Power Storage Module | In English | |
| PSU | Power Switching Unit | In English | → Electrical engineering |
| PT | Power Transfer | In English | |
| PTO | Power Test Operation | In English | |
| PU | Power Unit | In English | → Electrical engineering |
| PUMA | Prix Unitaire Moyen des ouvrages gAz | In French | → Prices |
| PV | Photovoltaic | In English | |
| PVTCS | Photovoltaic Thermal Control System | In English | |
| Qe2 | Quantock Energy & Environment | In English | → Environmental technology, water supply, waste management |
| RAG | Réseau d'Alimentation Générale | In French | → France |
| RAPHAEL | ReActor for Process heat, Hydrogen And ELectricity generation | In English | |
| RAS | Remontée Aéro-Souterraine | In French | → Electrical engineering |
| REACM | Regional Energy Agency of Central Macedonia | In English | |
| REC | Regional Electricity Company | In English | → Electrical engineering |
| REEEP | Renewable Energy and Energy Efficiency Partnership | In English | |
| REGBIE | Regional Bioenergy Initiatives around Europe | In English | |
| REIO | Renewable Energy Information Office | In English | |
| RENAEL | Rete Nazionale Agenzie Energetiche Locali | In Italian | |
| RENAISSANCE | Renewable ENergy Acting in SuStainable And Novel Community Enterprises | In English | |
| RESTART | Renewable Energy Strategies and Technology Applications for Regenerating Towns | In English | |
| REUS | Rational Energy Use & Solutions | In English | |
| RKI | Rheinkraftswerk Iffezheim GmbH | In German | |
| RNPP | Reliability and Network Planning Panel | In English | |
| RPA | Réponses aux Problèmes d'Alimentation | In French | → Electrical engineering |
| RSD | Relevé Sans Dérangement | In French | → Electrical engineering |
| RSE | Réseau Spécial d'Exploitation | In French | |
| RSF | Recherche Systématique de Fuites | In French | |
| RTG | Radioisotope Thermal Generator | In English | → Nuclear technology |
| SACRE | Système d'Aide au Choix de REnouvellement (des canalisations en fontes grises) | In French | → Software |
| SADPT | Solar Array Drive and Power Transfer | In English | → Electrical engineering |
| SAS | Solar Array Simulator | In English | |
| SAS | Solar Array System | In English | |
| SBEE | Société Béninoise d'Énergie Électrique | In French | → Electrical engineering |
| SCARF | Save Cash and Reduce Fuel | In English | |
| SDIG | Société pour le Développement de l'Industrie du Gaz | In French | |
| SEA | Samsø Energy Agency | In English | |
| SEA | Slovak Energy Agency | In English | → Slovakia |
| SEC | Sigma Energy Consulting | In English | → Consulting |
| SECTM | Société d'Électricité et de Thermique du Centre et du Midi | In French | → Electrical engineering |
| SEE | Service de l'Énergie de l'État | In French | → Central administration |
| SEEA | Serbian Energy Efficiency Agency | In English | |
| SEEC | Scottish Energy and Environment Conference | In English | → Organizations and associations → Environmental protection → United Kingdom |
| SEN | Sistemul Electroenergetic Naţional | In Romanian | |
| SEP | Solar Electric Propulsion | In English | → Electrical engineering |
| SEPTEN | Service Études et Projets Thermiques Et Nucléaires | In French | → Nuclear technology |
| SER | Sources d'Énergie Renouvelable | In French | |
| SERC | Solar Energy Research Center | In English | → Research institutes |
| SET | Solar Energy Thermionic | In English | |
| SEVE | Services, Énergies et Espaces de Vie | In French | |
| SFEN | Société Française d'Énergie Nucléaire (www.sfen.org) | In French | → Organizations and associations → Nuclear technology → France |
| SFMC | Société des Forces Motrices du Châtelot | In French | |
| SFOE | Swiss Federal Office of Energy | In English | |
| SFR | Société Française de Réfrigération | In French | |
| SHEM | Société Hydroélectrique du Midi | In French | → Electrical engineering |
| SHEMA | Société Hydraulique d'Études et de Missions d'Assistance | In French | |
| SICFD | Système d'Information Client Fournisseur du Distributeur | In French | → Software |
| SIECLE | Serveur Intranet des Enquêtes CLientèle EDF-GDF | In French | → Software → Trade |
| SIP | Società Idroelettrica Piemontese | In Italian | → Electrical engineering |
| SITEF | Salon International pour les Technologies et les Énergies du Futur | In French | → Congresses |
| SMES | Superconducting Magnetic Energy Storage | In English | |
| SNET | Société Nationale d'Électricité et de Thermique | In French | → Electrical engineering |
| SNRE | Stratégie Nationale de Recherche dans le domaine de l'Énergie | In French | → Research policy |
| SoCe | Solar Cells | In English | → Serial publications, periodicals |
| SoEn | Solar Energy | In English | → Serial publications, periodicals |
| SoEnM | Solar Energy Materials | In English | → Serial publications, periodicals |
| SOFC | Solid Oxide Fuel Cell | In French | |
| SOFC | Solid Oxide Fuel Cell | In English | → Chemical technology |
| SOFENA | Sofia Energy Agency | In English | |
| SPCA | Secondary Power Control Assembly | In English | |
| SPDB | Subsystem Power Distribution Box | In English | |
| SPP | Slovenský Plynárenský Priemysel (www.spp.sk) | In Slovak | → Slovakia |
| SpPow | Space Power | In English | → Serial publications, periodicals → Astronautics |
| SPRMD | Space Power Resources and Manufacturing Development | In English | → Serial publications, periodicals → Astronautics |
| SPRU | Standard Power Regulator Unit | In English | |
| SPS | Satellite Power System | In English | → Astronautics |
| SREP | Scaling-up Renewable Energy Programme for Low-Income Countries | In English | → Development |
| SSE | Stredoslovenská energetika (www.sse.sk) | In Slovak | → Slovakia |
| SSPRv | Space and Solar Power Review | In English | → Serial publications, periodicals → Astronomy |
| SSPS | Solar Satellite Power Station | In English | → Astronautics |
| SSRV | Solar-Sail Race Vehicle | In English | → Vehicle engineering |
| STEG | Service Technique Électricité et Gaz | In French | → Electrical engineering |
| STEP | Station de Transfert d'Énergie par Pompage | In French | |
| STG | Service Technique Gaz | In French | |
| SWEA | Severn Wye Energy Agency | In English | |
| SWEPCO | Southwestern Electric Power Company | In English | → Organizations and associations → Electrical engineering |
| SYCOET | SYstème de COnfiguration des Équipements de Téléconduite (pour les réseaux de transport d'énergie) | In French | → Software |
| SYGARD | SYstème de Gestion d'Accès au Réseau de Distribution | In French | → Software |
| TAEM | Terminal Area Energy Management | In English | |
| TARG | Téléchargement des Applications Réseau Gaz | In French | → Computer science |
| TARTAM | TArif Réglementé Transitoire d'Ajustement du Marché | In French | → Prices |
| TC | Transformateur de Courant | In French | → Electrical engineering |
| TdE | Transalpina di Energia | In Italian | |
| TEA | Tipperary Energy Agency | In English | |
| TEGI | Tractebel Electricity & Gas International | In English | → Electrical engineering |
| TEMASOL | Total EDF Maroc Solaire | In French | → Morocco |
| TENP | Transport Électricité Normandie-Paris | In French | → Electrical engineering → France |
| TEO | Transport Électricité Ouest | In French | → Electrical engineering |
| TEP | Tonne Équivalent Pétrole | In French | → 665 |
| TERA | Transport Électricité Rhône-Alpes | In French | → Electrical engineering |
| TESE | Transport Électricité Sud-Est | In French | → Electrical engineering |
| TESO | Transport Électricité Sud-Ouest | In French | → Electrical engineering |
| TGV | Turbine - Gaz - Vapeur | In French | |
| ThF | Thermique à Flamme | In French | |
| TICGN | Taxe Intérieure de Consommation sur le Gaz Naturel | In French | → Taxes, duties |
| TMS | Thermal Management Solutions | In English | |
| TREN | TRansport et ÉNergie | In French | → Transport and postal services |
| TrGRC | Geothermal Resources Council Transactions | In English | → Serial publications, periodicals → Earth sciences |
| TRICOT | TRansfert des Index des COmpteurs Télérelevables | In French | → Electrical engineering |
| TSS | Tarif Spécial de Solidarité | In French | → Prices |
| UAEA | Uluslararası Atom Enerji Ajansı (www.iaea.org) = OIEA, IAAE, IAEA, AIEA, МААЕ, MAAE, IAEO, סבא"א, МАГАТЭ, MAEA, МАГАТЕ, EANA (look above) |
In Turkish | → International relations → Nuclear technology |
| UEA | United Energy Associates (www.uea.com) | In English | → Electrical engineering → Environmental technology, water supply, waste management |