The increase in demand for places
at the school meant there was an urgent requirement for more
capacity and the
current school wasn't in a
location to be modified successfully.
But capital costs are the real show - stoppers: for photovoltaics,
at $ 3 / peak watt
current prices (solar thermal systems are roughly the same), even in an ideal
location, 2000 TWh / yr requires about 1 TW peak
capacity, or $ 3 trillion capital investment.