Solar is a Better Investment than S&P 500

Check out NRDC's summary of the Going Solar In America Guide.

According to this study, investing money in a 5kW system for a single-family home will yield higher returns than investing that same amount in the S&P 500. As NRDC states "What's good for our wallets is also good for us as a society, in this case."

http://switchboard.nrdc.org/blogs/pbull/single-family_solar_power_beat.html 

http://nccleantech.ncsu.edu/wp-content/uploads/Going-Solar-in-America-A-Customer-Guide-FINAL_V2.pdf