| BCC Research | Fossil fuel & renewable energy | www.bccresearch.com |
| BERKELEY LAB | Energy efficiency | www.lbl.gov |
| Bioenergy Europe | Renewable energy | bioenergyeurope.org |
| BP | Fossil fuel & renewable energy | www.bp.com |
| CleanEdge | Renewable energy & energy efficiency | cleanedge.com |
| Clean Energy States Alliance (CESA) | Renewable energy & energy efficiency | www.cesa.org |
| Climatescope | Energy efficiency | global-climatescope.org |
| Confederation of European Waste-to-Energy Plants (CEWEP) | Renewable energy | www.cewep.eu |
| Ecoprog | Renewable energy & energy efficiency | www.ecoprog.com |
| Energy Market Research | Fossil fuel & renewable energy | www.energymarketresearch.com |
| Energy Storage Association | Renewable energy & energy efficiency | energystorage.org |
| European Heat Pump Association (EPHA) | Renewable energy & energy efficiency | www.ehpa.org |
| European Wind Energy Association | Renewable energy | www.ewea.org |
| Frankfurt School – UNEP | Renewable energy & energy efficiency | www.fs-unep-centre.org |
| IEA Bioenergy | Renewable energy | www.ieabioenergy.com |
| IEA Photovoltaic Power Systems Programme (PVPS) | Renewable energy | iea-pvps.org |
| IHS Markit | Fossil fuel & renewable energy | ihsmarkit.com/index.html |
| International Energy Agency | Fossil fuel & renewable energy | www.iea.org |
| International Solid Waste Association (ISWA) | Renewable energy | www.iswa.org |
| International Trade Administration | Fossil fuel & renewable energy | www.trade.gov |
| IRENA | Renewable energy | www.irena.org |
| GlobalData | Fossil fuel & renewable energy | globaldata.com |
| Global Energy Network Institute | Fossil fuel & renewable energy | www.geni.org/index.html |
| Global Wind Energy Council (GWEC) | Renewable energy | gwec.net |
| Hart Energy | Fossil fuel | www.hartenergy.com |
| MarketResearch.com | Fossil fuel & renewable energy | www.marketresearch.com |
| Middle East Solar Industry Association | Renewable energy & energy efficiency | www.mesia.com |
| NavigantResearch | Fossil fuel & renewable energy | www.navigantresearch.com |
| New Energy Update | Renewable energy & energy efficiency | www.newenergyupdate.com |
| Ocean Energy Europe | Renewable energy | www.oceanenergy-europe.eu |
| Oilgae | Renewable energy | www.oilgae.com |
| Organization of the Petroleum Exporting Countries | Fossil fuel | www.opec.org |
| Oxford Institute for Energy Studies | Fossil fuel & renewable energy | www.oxfordenergy.org |
| REN21 | Renewable energy | www.ren21.net |
| RenewableUK | Renewable energy | www.renewableuk.com |
| Reportlinker | Fossil fuel & renewable energy & energy efficiency | https://www.reportlinker.com/ |
| Research and Markets | Fossil fuel & renewable energy | www.researchandmarkets.com |
| SolarPACES | Renewable energy & energy efficiency | www.solarpaces.org |
| U.S. Department of Energy | Fossil fuel & renewable energy & energy efficiency | www.energy.gov |
| U.S. Energy Information Administration | Fossil fuel & renewable energy & energy efficiency | www.eia.gov |
| U.S. Geological Survey | Fossil fuel | www.usgs.gov |
| WindEurope | Renewable energy | windeurope.org |
| Wood Mackenzie | Fossil fuel & renewable energy | www.woodmac.com |
| World Energy Council | Fossil fuel & renewable energy & energy efficiency | www.worldenergy.org |
