Alliance to Save Energy
The Alliance has a great Stimulus resources page. Also check out their policy section for research on reducing the cost of addressing climate change through energy efficiency.

American Council for an Energy Efficient Economy (ACEEE)
State Energy Efficiency database, include state policies on building codes, climate policies, and tax incentives. Also sections on climate and energy legislation, as well as energy markets legislation.

Oak Ridge National Laboratory Energy Efficiency & Electricity Technologies Program
The program develops sustainable energy technologies to create a cleaner environment, a stronger economy, and a more secure future for our nation. The program is committed to expanding energy resource options and to improving efficiency in every element of energy production and use. The research focuses on processes, systems, and materials for application in: transportation, industrial technologies, buildings, weatherization, federal energy management, and renewables (hydrogen, biomass, hydropower, and solar).

Home Energy Magazine
Home Energy Magazine’s mission is to disseminate objective and practical information on residential energy efficiency, performance, comfort, and affordability.