Rapid progress in PV electricity is being made in California. Installed capacity is now ~10,000 MW. One-fourth of new houses in southern California now have solar power installed.
http://blog.renewableenergyworld.com/ugc/blogs/2015/06/california_sets_reco.html See also this article, claiming that in 2014 carbon emissions did not increase even though energy use increased: http://www.renewableenergyworld.com/articles/2015/06/renewable-energy-responsible-for-first-ever-carbon-emissions-stabilization.html - Jed
