So, what's worse, 4 - taxing energy, at the end of the line, and calling it 'green tax', or throwing £billions hand-over-fist in the form of subsidies so as to warp market-reality by making coal, oil and gas appear cheaper than they really are? When I was in Wales, a couple of years' back, I took mental notes of what my uncle's photovoltaics produced; anywhere between 10 and 25 kWhr of juice per day (April). Even 10kWhr is enough to heat a whole tank of water. So, why go through the palaver of sending it all into the grid, when heating water directly is far more efficient? Or is it simply that the government's subsidies are really intended to put even more taxpayers' money into the coffers of their chums? Forty years' back, I worked with a guy who saved himself a fortune by installing black-painted radiators on his roof!