As recently as 2012, South Africa had very little wind energy capacity—10 MW to be precise—and it had taken ten years to get to that point. Now, in 2016, it is right around 2 GW. That’s something like a 1900% increase in four years by my (admittedly math-addled) brain. And according to consulting firm GlobalData, another 3 GW are due to be added in the next four years. This matters for all of us. According…