Agree with ya there buddy. A mate of mine was building a new house a few years back and asked me about what i trhought on solar hot water heating. I asked him how much for the solar system which I think was towards $10k. I got him to get the cost of an electric cylinder, around $1000 and got him to show me his power bill and I showed him the water heating part of that which was around $40 per month. If he had no running cost at all with the solar (which probably wont happen in winter ) it would take around 8 years to pay for itself, by which time the solar system would probably require maintainance or replacement. I seem to remember being told the life expectancy not great on the photocells ?