Rooftop solar is now cheaper than the grid in 42 American cities
Solar is cheaper because of you suckers that don't have panels. There is a good government subsidy up front which people know about but the real secret is green energy credits. The green energy credits that the power companies are required to buy from home owners are worth at least as much as the electricity. If it wernt for these incentives then more efficient things like solar hot water would win out, but instead I put a PV array on my roof. When I got my panels the anticipated payback period was just 5 years in Massachusetts.