US power companies brace for supply crisis – Reuters

American power providers are facing supply shortages that stem from increased pressure on the grid due to record-high temperatures, as people boost the use of air conditioning, Reuters reported on Wednesday.

According to Refinitiv data, the weather in the US has already been some 21% warmer than the 30-year average.

“Federal agencies responsible for power reliability, like the Federal Energy Regulatory Commission (FERC), have warned that grids in the western half of the country could face reliability issues this summer as consumers crank up air conditioners to escape the heat,” the report states.

Power companies are worried they will not be able to find the spare parts to fix equipment fast enough to avoid outages, with some of them already reporting problems due to the heat. The Electric Reliability Council of Texas (ERCOT), for instance, had to ask customers to cut back on energy use and turn up the temperature on air conditioners after six power plants went offline during a heat wave in mid-May.

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A month later, some 200,000 homes and businesses in Ohio were left without electricity after a storm damaged transmission lines throughout the state, and the grid operator was forced to cut power in some areas to prevent the remaining lines from being overloaded.

The report says that grid operators are currently experiencing a dire shortage of transformers, which convert high-voltage energy to the electricity used in homes. And, according to two industry associations, some of them have had to wait a year or more for transformer parts.

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“You don’t want to deplete your inventory because you don’t know when that storm is coming, but you know it’s coming… If we have successive days of 100-degree-heat, those pole top transformers, they start popping like Rice Krispies, and we would not have the supply stack to replace them,” Ralph Izzo, head of the New Jersey-based Public Service Enterprise Group (PSEG) Izzo, told Reuters.

According to the news agency, in order to preserve spare parts for unexpected weather conditions, utility operators have been changing their maintenance habits.

“We’re doing a lot more splicing, putting cables together, instead of laying new cable because we’re trying to maintain our new cable for inventory when we need it,” Nick Akins, head of the Ohio-based grid operator AEP, stated.

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