I applaud your willingness to put your money where your heart is.

I would respectfully suggest, however, that you will gain more from your money by directly investing in NEW clean power generation. Right now, unfortunately, these schemes are more scam than progress, because they are selling clean energy that is *already* on the grid.

It is not easy in the US to directly invest, due to barriers to entry present at the local, state, and national levels for grass roots development. Two possibilities I am looking into are buying stock in FPL (the Florida energy utility), and international wind farms. FPL is by and away the most active energy company in bringing new clean energy to the US grid, and they have a proactive program to clean up their coal plants. International wind farms are not as attractive as local, but global warming is a global problem.