Wed, August 16, 2017 2:30 pm

As a testament of just how much solar power has penetrated the U.S. power gen market, Bloomberg published an article in July stating that the total eclipse on August 21st could temporarily knock out the equivalent of 9 GW of capacity. The total eclipse will shade the sun along a 70-mile wide band from Oregon to South Carolina. In PJM, the estimated total is about 2.5 GW. Even in regions where the eclipse will be partial, such as California, the effect could be significant. While the total duration of the eclipse is only about 4 hours, the replacement power will most likely come from coal and natural gas.