General Renewable Energy Resources

• DOE Energy Efficiency and Renewable Energy Office
• National Renewable Energy Laboratory
• American Council on Renewable Energy
• Renewable Energy Policy Project
• Renewable Energy Access
• Database of State Incentives for Renewable Energy (DSIRE)
• Renewable Energy Statistics from the Energy Information Administration
• Renewable Energy Vermont
• Alternative Energy Blog
• Alternative/Renewable Energy Blog
• Fresh Energy.org
• CleanTech Blog
• The Energy Blog
• The Watt
• Democratic Energy
• Energy Outlook
• Clean Break
• Maria Energia 
• VB/Research 

Biodiesel Resources

• National Biodiesel Board
• Biodiesel Now
• Biodiesel America
• The Vermont Biofuels Association
• The Biodiesel Blog
• The Green Car Congress
• The Propel Project Blog
• B100 Fuel - Living on Biodiesel

Wind Energy Resources

• American Wind Energy Association
• National Wind Coordinating Committee
• National Wind Technology Center
• U.S. Wind Energy Resources Map
• Windustry

Geothermal Resources

• U.S. Department of Energy Geothermal Technologies Program
• Relevant Geothermal Laws and Standards
• U.S. Geothermal Resources Map
• Geothermal Resources Council
• Geothermal Energy Association
• Geothermal Energy Research
• Geothermal Education Office
• A Virtual Geothermal Energy Tour (via Calenergy)

Solar Resources 

• American Solar Energy Society
• Solar Energy Industries Association
• DOE Solar Energy Website
• SolarBuzz News
• SOL Energy On-line

Fuel Cell Resources

• DOE Hydrogen Technologies Website
• Fuel Cell Today
• National Hydrogen Association
• 4 Hydrogen.com
• The Hydrogen Energy Center
• Fuel Cell Works

Hydro Resources

• Low-impact Hydro Institute
• National Hydropower Association
• Hydro Research Foundation

Ocean/Wave Energy Resources 

• DOE Ocean Energy Page
• Ocean Renewable Energy Coalition
• Wave Energy Centre
• Electric Power Research Institutes's Ocean Energy Page
• Offshore Renewable Energy Law Blog

Biomass Resources 

• U.S. Department of Energy Biomass Program
• American Bioenergy Association
• The Biomass Energy Resource Center
• Biomass Energy Research Association
• Northeast Regional Biomass Program

Blogroll

• Alternative Energy Blog
• Alternative/Renewable Energy Blog
• World Changing
• Energy Answers
• Sustainablog
• Regenerate
• Alternative Energies Weblog
• The Clean Air Blog
• Climate Change Action
• Blue Climate
• Offshore Renewable Energy Law Blog
• Energy Outlook
• Clean Break
• Maria Energia
• CleanTech Blog
• The Energy Blog
• The Watt
• The Biodiesel Blog
• The Green Car Congress
• The Propel Project Blog
• B100 Fuel - Living on Biodiesel