Clean Energy Resources for Research are made up of websites, databases, reports and other information sources on clean energy or related subtopics. Resources for clean energy research sources that are public, private and nonprofit.
REEEP - The Renewable Energy and Energy Efficiency Partnership
REN21 - The Renewable Energy Policy Network for the 21st Century (REN21) "is a global policy network that provides a forum for international leadership on renewable energy."
REEGLE - Information gateway for renewable energy and energy efficiency
Canadian government's Clean Energy Portal.