Brad Plumer in Vox : “Many people have probably heard that it’s getting cheaper to install rooftop solar panels in the US. But that’s just part of an even bigger trend. Since 2010, the cost of renewable energy has been plummeting all over the world.”  

“David Roberts highlights a new study from the International Renewable Energy Agency laying it out in detail. Large wind farms got cheaper between 2010 and 2014. Large-scale solar got a lot cheaper. And at least some renewable plants are even becoming competitive with new fossil-fuel plants:”