On Tue, Apr 13, 2021 at 8:51 PM Sean Donelan <sean@donelan.com> wrote:
ERCOT ISO Texas has announced the end of today's emergency energy conservation appeal due to a shortage of generation capacity and higher than forecasted demand caused by a cold front.
No this is not an old message. Yep, Texas is having power shortages again in mild April weather.
a watch that has been cancelled, not an emergency http://www.ercot.com/services/comm/mkt_notices/opsmessages/2021/04
Apr 13 2021 19:22:55 CST Physical Responsive Capability < 2500 MW: ERCOT has cancelled the following notice: ERCOT is issuing a Watch due to Physical Responsive Capability being below 2500 MW. Watch Cancelled there was no supply shortage in day ahead market (not a generation capacity shortage) http://www.ercot.com/content/cdr/html/20210413_dam_spp day-ahead forecast peak was ~2800 MW lower than current-day forecast, as a result actual load exceeded current-day HSL (High Sustained Limit). The gap peaked 340MW at 4pm http://www.ercot.com/content/cdr/html/loadForecastVsActualPreviousDay.html https://imgur.com/a/6MW5qU4 (screenshot) ancillary services (10 minute responsive reserve service, 30 minute non-spin) were deployed to meet higher than forecast demand and worked as expected reserve never dropped under 2300MW which would have triggered an emergency (EEA-1) emergency response service (additional generation/load resources reserved for emergencies) wasn't deployed http://www.ercot.com/services/programs/load/eils