Typically, solar hot water projects return for the customer, whoever that is, a return on investment in the 12% to 15% per year range. From that perspective, we're the best investment.
I haven't done the calculations the way the wind guy did his calculations, but there's a lot of independent research that shows that solar hot water is a less expensive form of renewable energy than wind, typically by about 50%. If he can return $1.30, I can probably return $1.75 or $2--back of the envelope, without having done the calculations carefully.