green lawnmower you can build yourself

it's not cheap!

http://www.arttec.net/Solar_Mower/Parts/List.htm

EcoTality

site states that it is "Informing and challenging the world about energy solutions"

http://www.ecotality.com/blog/

Wind turbine for your home

http://mag-wind.com/

also the intersate renewable energy council for info on connecting to the grid

http://www.irecusa.org/