New York — The New York Independent System Operator said the state's power grid performed well during winter 2019-2020 when peak demand reached 23,253 MW on Tuesday, December 19, 2019.
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The grid operator reported noteworthy cold weather conditions from November 12 to November 14 during which the Iroquois and Texas Eastern natural gas transmission systems, and downstate local gas distribution companies declared force majeure, according to a presentation posted to the NYISO website Wednesday.
Iroquois issued a force majeure November 12 caused by an unplanned outage of the Dover compressor station. Texas Eastern issued a force majeure November 13 caused by an unplanned outage of the Entriken compressor station, while National Grid and Con Edison issued hourly or stricter operational flow orders due to pipeline restrictions, NYISO said.
Seasonal low temperatures occurred on February 15, 2020 and were minus 4 degrees Fahrenheit in Syracuse, 5 degrees in Albany and 15 degrees in New York City. NYISO fuel surveys indicated sufficient alternate fuel inventory was available at the time.
New York's all-time winter electric peak load was 25,738 MW on January 7, 2014, and this winter's actual peak (to date) was 23,253 MW on Tuesday, December 19, 2019, according to NYISO.
No significant power generation outages were observed, and the small sampling of cold weather conditions occurring during winter 2019-2020 "did not reveal any trends or substantial metrics for review," the grid operator said.
Dual fuel resources performed "extremely well" when needed this winter, even during tight OFO conditions on November 13. Only approximately 160 MW of fuel-related outages were observed, NYISO said.
The markets performed well. There was no need for statewide supplemental capacity commitments and no need for emergency actions like voltage reduction or public appeals to curtail demand, and there was no need for emergency purchases.
Transmission infrastructure performance was "excellent," NYISO said.