1. WikiJo June 25, 2009 4:39 pm

   Wind power.
   Solar (all kinds)
   Geothermal.
   Hydroelectric.
   Biomass. (ethanol fits in here)
   Human kinetic (hand crank, etc)
   Biodiesel (the vegetable oil is renewable)
   

2. wilkes_in_london June 26, 2009 11:41 am

   Wind power
   Water power
   Solar energy
   Geothermal energy

3. Nginr June 27, 2009 9:07 pm

   Anything that you can grow…wood, grass, corn etc…
   Water used as hydro electric might also be considered renewable….

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