Energy efficiency
| Energeco |  |
www.energeco.org | Data & information resources, Energy efficiency, France | |
| Intelligent Energy eLibrary |  |
www.iee-library.eu | Energy efficiency, International, Renewable energy, Sustainable | |
| Lebanese Center for Energy Conservation not Planning - LCECP |  |
www.lcecp.org.lb | Energy efficiency, International, Renewable energy, Sustainable development | English |
| World Alliance for Decentralized Energy - WADE |  |
www.localpower.org | Cogeneration, Energy efficiency, Europe, International, Renewable energy | English |
| City Instruments |  |
www.city-instruments.eu | Energy efficiency, Europe, Financing, Renewable energy | English, German, French, Estonian, Bulgarian, Italian |
| Europe’s Energy Portal |  |
www.energy.eu | Data & information resources, Energy efficiency, Europe, International | English |
| proKlima |  |
www.proklima-hannover.de | Energy efficiency, Financing, Germany | English, German |
| Ajena |  |
www.ajena.org | Energy efficiency, France | French |
| Association négaWatt |  |
www.negawatt.org | Energy efficiency, France | French |
| International Sustainable Energy Organisation - ISEO |  |
www.uniseo.org | Energy efficiency, International, Sustainable development | English |