July 17 — The report noted that the rise in solar is due to developments over the past decade, which have set the stage for more renewables. In 2009, coal-fired plants created 111.8 million MWh of electricity in the market. This accounted for almost 37% of ERCOT’s demand. In 2019, those numbers dropped to 77.9 million MWh. Despite the drop, electricity demand in ERCOT rose from 305.4 million MWh in 2009 to 284 million MWh by 2019. That was a 25.7% increase. Thus, coal’s market share fell to just above 20%.