Sorry, I didn't save the numbers.. But yeah, sounds right - based on reports that we can only expect 1/5th of the output per panel in winter. "Passive houses"

Sorry, I didn't save the numbers.. But yeah, sounds right - based on reports that we can only expect 1/5th of the output per panel in winter. "Passive houses" are not going to happen in the UK for the vast majority of the population in my lifetime!