New York Times, The Opinion Pages, February 4, 2016
By Paul Krugman
I wrote earlier this week about prospects for a renewables revolution; right on schedule, Bloomberg reports, A Renewables Revolution Is Toppling the Dominance of Fossil Fuels in U.S. Power. It turns out that solar and wind accounted for two-thirds of the generation capacity added last year.
Now, that’s not enough: coal-fired generation is slowly being phased out, but the process needs to go much faster, and while replacement of coal with natural gas could in principle be a net positive — less carbon, more hydrogen — in practice the leaks associated with fracking make that highly doubtful.
But the point you should take is that really dramatic reductions in greenhouse gas emissions are well within reach, requiring only moderate incentives rather than a complete teardown of the existing system.