http://www.bloomberg.com/news/articles/2015-06-23/the-way-humans-get-electricity-is-about-to-change-forever
The shift to renewables is happening shockingly fast, but not fast enough to prevent perilous levels of global warming.
About $8 trillion, or two thirds of the world's spending on new power capacity over the next 25 years, will go toward renewables. Still, without additional policy action by governments, global carbon dioxide emissions from the power sector will continue to rise until 2029 and will remain 13 percent higher than today's pollution levels in 2040.
That's not enough to prevent the surface of the Earth from heating more than 2 degrees Celsius, according to BNEF. That's considered the point-of-no-return for some worst consequences of climate change.