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ERCOT Report on Cold Weather Event 2021; BOD Presentation 2-24-2021
The Texas Grid was less than 5 minutes from a potentially catastrophic collapse with a frequency below 59.4 for almost 4.5 minutes. There are some really ugly graphs in the linked presentation below, presented by ERCOT Senior Management to the BOD on 2/24/2021. This is further evidence that Scarcity pricing is an economists dream and a grid operators nightmare! And now some regulators are realizing it's their nightmare too.
ERCOT Report on Cold Weather Event 2021; BOD Presentation 2-24-2021
Key Events (Monday, February 15 – Friday, February 19) • More than 16,500 control room calls with generators and transmission owners (normal: ∼5,000/week). • Multiple daily coordinating calls between transmission owners and operations management. • Monday, February 15 ‒ Up to an additional ∼24,000 MW net generation unavailable due to extreme weather; loss of generation was 52,277 MW (approximately 48.6%) at the highest point. ‒ 20,000 MW peak load shed. ‒ Limited gas availability for gas-fired power plants. ‒ Multiple DC-Tie constraints due to neighboring area emergencies. ‒ Daily Texas Energy Reliability Council meetings. • Tuesday, February 16 ‒ No net gain in generation as some generators were restored and others became unavailable. ‒ Decreased volume of controlled outages during the day, increased for evening peak. • Wednesday, February 17 ‒ Moderating temperatures allowed reduction in controlled outages, small net gain in generation. • Thursday, February 18 ‒ Continued gain in generation. ‒ 12:42 a.m. - Canceled last controlled outage orders - some outages remained due to ice storm damage; need for manual restoration and return of large industrial facilities. • Friday, February 19 (all times approximate) ‒ 9 a.m. - Returned to emergency operations level 2 ‒ 10 a.m. – Returned to emergency operations level 1 ‒ 10:35 a.m. – Returned to normal operations
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