re solar power, I find it interesting that with unlimited solar power in the inner solar system in space, when it comes to big beefy missions that require serious ooomph, ie Cassini, planned mission to mars ect. NASA rely on nuke power for the ooomph, not solar.
Norm re your experience with solar hot water - in summer here, the outside water pipes get so hot anyway, we never have to turn the hot tap on anyway
wind, solar - just patchy unreliable bandaid technology, dreamy fiddling at the edges stuff.
and the vast majority of power and water ect. consumption is by industry, commerce, farming and mining.
Not domestic use as everyone seems to believe!