The bad news for coal keeps piling on.
EIA recently released monthly data thru June and coal generation is down YTD by 71 TWh = 13%.
It looks like over 14 GW of coal capacity may be closing this year - with the Navajo coal plant referenced in this article contributing 2,250 MW to that total.
Outlook for 2020 - plenty of wind and solar coming online along with some new NG. Hopefully, hydro recovers from a bad year in PNW. As for coal - less generation and more closure annoucements. Coal continues its march towards irrelevance as a source of fuel for electricity in the US.
This also means that CO2 from the US electric sector will continue to fall.
When running at full capacity, Navajo Generating Station is about the third-largest source of greenhouse-gas emissions in the U.S., depending on how much the other big coal plants run in a given year.