General Information Sites:

http://www.eia.doe.gov/kids/energyfacts/sources/renewable/renewable.html - Dept. of Energy

http://www.eere.energy.gov/ - a comprehensive site

http://www.aresearchguide.com/energy.html - a student’s guide to renewable energy

http://www.nrel.gov/ - National Renewable Energy Lab

Alternative and Renewable Energy Sources

Rezachek & Associates Energy and Environmental Resources

Energy Topics A to Z

The Energy Tree
http://www.oneworld.org/energy/
This site is a little harder to read, but you would learn a lot.
Energy Quiz
http://www.energy.ca.gov/education/index.html
This site has a lot of things to do - games, puzzles, etc.

Center for Renewable Energy and Sustainable Technology 

Wind Information Sites:

http://www.awea.org/

http://www.windenergy.com/index_wind.htm

http://windeis.anl.gov/guide/basics/index.cfm

Wind Technology www.nrel.gov/research/wind/wind.html

Wind Power Monthly News Magazine http://.wpm.co.nz

Wind Power in Iowa http://iowawind.org

Guided Tour on Wind Energy www.windpower.org/tour/index.htm

Geothermal Information Sites:

http://geothermal.marin.org/

http://www.repp.org/geothermal/index.html

http://geothermal.id.doe.gov/

www.eere.energy.gov/geothermal/

www.geo-energy.org/

www.alternative-energy-news.info/geothermal-energy-intelligent-use-of-earths-heat/

www.energy-consumers-edge.com/pros_and_cons_of_geothermal_energy.html

Solar Information Sites:

http://www.eia.doe.gov/kids/energyfacts/sources/renewable/solar.html

http://www.ases.org/

http://www.seia.org/

Alternative Fuels Data Center: Solar

EREN - Solar Energy

Solar Electric Power Association

American Solar Energy Society
Solar Energy Industries Association 

Hydro-electric Information Sites:

http://ga.water.usgs.gov/edu/hyhowworks.html

http://www.ncsc.ncsu.edu/information_resources/factsheets/Tech_Hydroelectric.pdf

http://www.envirohub.net/hydroelectric-energy.html

EREN - Hydropower 

Facts About Hydropower

Power Matters: Hydroelectric Power

Biomass Information Sites:

http://www.powerhousekids.com/stellent2/groups/public/documents/pub/phk_ee_re_001503.hcsp

http://www.eia.doe.gov/kids/energyfacts/sources/renewable/biomass.html

http://www.biomasscenter.org/

American Bioenergy Association

Waste-to-Energy Plants

American Ref-fuel

Biomass Energy Research Association

National Biofuels Program

Barlow Projects: Waste to Energy Solutions