They just visited my next door neighbor this week. They promised him free install. He asked me about it, since we got a large solar array installed last year and I did a ton of research. I've never heard of this company, but I can assure you it's bullshit. Probably stretching the truth to say the install is rolled into financing or a lease - your city government has no involvement.

Like others have said, if you're interested in solar buy the system outright. Contact many reputable companies for quotes and/or use Energy Sage to solicit bids.