International Energy Agency (IEA) Policies and Measures Database Climate change, IEA/IRENA Global Renewable Energy, energy efficiency.
Federal Energy Regulatory Commission Resources for market research, legal issues, and documents/filings.
Environmental Protection Agency Laws and regulations by energy sector.
Database of State Incentives for Renewables & Efficiency State and federal resource of tax incentives for renewable and efficient energy.
Energy Policy Research Foundation Focus is on energy economics, particularly oil.