by Jeff St. John
August 10, 2016

Image: NASA/Martin Stojanovski

Over the past year and a half, we’ve seen a slow-building controversy emerge over an obscure, yet critically important, set of rule changes at PJM Interconnection, the country’s biggest grid operator. It’s all about how to secure enough capacity to keep the lights on during times of peak electricity demand -- and whether the rules for doing so should be centered on the summer and winter seasons when those peaks occur, or on resources that can be available all year round.

It all started in late 2014, after...