The trend has been written about extensively, but general trends aren’t as important as individual actions. In 42 of America’s 50 biggest cities, solar is now cheaper than grid power. Local sunshine, clouds, utility rates, and subsidies alter the answer; but even in rainy Portland, OR, solar is cheap.
“In 42 Of The Biggest U.S. Cities, Rooftop Solar Is Now Cheaper Than The Grid” – Treehugger
Pretending Not To Panic 