The milestone is the result of a long term decline of fossil generation in the US power sector, with wind and solar growing substantially over the last decade. Ten years ago, in March 2015, fossil generation still provided 65% of US electricity generation. Wind and solar generation stood at just 5.7%. Since then, the share of wind and solar power has more than quadrupled. Solar power is set to account for more than half of new generating capacity installed in the US in 2025, with more than a thi...