Texas wind and solar shined in 2020, will they this summer?
- Aug 2, 2021 4:24 pm GMT
The big buildout of wind and solar resources in Texas over the past several years is having a positive impact on wholesale power prices during high electricity demand periods. How did Texas grid operator ERCOT (Electric Reliability Council of Texas) perform in 2020? We analyzed daily electricity production data compiled by Hitachi ABB Power Grids’ Velocity Suite research team to answer the question.
Last summer, on Monday, July 13, 2020, during hour 17, the ERCOT market peaked at 74.3 Gigawatts (GW), only 0.5 GW below the all-time ERCOT peak (74.8 GW) set on August 12, 2019, but a full 3.3 GW above the all-time July peak also set in 2019. During July 2020, ERCOT issued only two Operating Condition Notices (OCNs), one for extremely hot weather with forecast temperatures above 103 degrees Fahrenheit (F), and one warning that tropical storm Hanna might make landfall, which it eventually did on July 25 in southern Texas. The hurricane did not cause any reliability issues, but damage to the 138-kV and 64-kV transmission system caused congestion in the South Load Zone. During the month, there were only seven advisories for Physical Responsive Capability (PRCs) < 3,000 MW – an indicator of falling reserve margin. In comparison, during August 2019, ERCOT issued six OCNs, nine advisory PRCs, one watch for supply dipping below 2,500 MW, and two energy emergency alert level 1’s (EEA1) for reserves dipping below 2,300 MW. During the EEA1 events, market prices for electricity topped the market cap of $9,000/MWh on several occasions.
Get Published - Build a Following
The Energy Central Power Industry Network is based on one core idea - power industry professionals helping each other and advancing the industry by sharing and learning from each other.
If you have an experience or insight to share or have learned something from a conference or seminar, your peers and colleagues on Energy Central want to hear about it. It's also easy to share a link to an article you've liked or an industry resource that you think would be helpful.