Texas electric grid still not ready for extreme winter weather -NERC
Reuters
Published Nov 18, 2021 02:05PM ET
By Tim McLaughlin
(Reuters) - The Texas electric grid could suffer a massive shortfall in generating capacity in a winter deep freeze, potentially triggering outages similar to those in February, according to a report on Thursday by an electric reliability authority.
The assessment by the North American Electric Reliability Corp (NERC), a nonprofit regulatory authority, comes as Texas lawmakers and regulators continue to investigate ways to bolster the grid to avert a repeat of last winter's blackouts, which left 4.5 million customers without power in a deep freeze that killed more than 200 people.
In normal winter conditions, the anticipated reserve margin - a cushion of extra capacity versus demand - is comfortable at nearly 42% for the Electric Reliability Council of Texas (ERCOT), the grid operator for about 90% of the state.
But if severe frigid weather hits, it could disrupt pipeline natural gas supplies and power stations, leaving a capacity deficit as high as 37%, NERC said.
The Texas grid is mostly isolated from other U.S. grids, with a limited ability to import electricity when a local shortfall materializes. ERCOT also operates the only major U.S. grid that does not have a capacity market - a system that provides payments to operators to be on standby to supply power during severe weather events.
ERCOT said in a statement that it had made significant progress since last winter. "The electric grid will be able to perform significantly better this coming winter than in the past," it said.
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Written By: Reuters
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