“For residents of the Lone Star State, the problem stems from both a record spike in electricity demand in a place that rarely gets this cold, as well as an unexpected drop in the supply of energy from natural gas, coal, wind, nuclear, and solar sources besieged by cold and ice.
This combination of shortfalls has forced power grid operators to conduct rolling blackouts, where power is shut off to different areas for a limited period of time. Local utilities are asking customers to conserve power and set their thermostats lower. For some customers, these blackouts aren’t rolling, instead stretching on for an unknown duration. On Tuesday afternoon, grid operators told Texas legislators that outages could last for days and that they weren’t sure when the power outages would end.”
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“Ordinarily, ERCOT plans for winter to be much warmer and anticipates a lower energy demand. Power providers often schedule downtime and maintenance during the winter months to prepare for the massive annual surge in electricity demand in the hot Texas summer. The state’s ample wind and solar energy resources are also diminished in the winter, so ERCOT doesn’t depend on them to meet much of the demand they anticipate.
However, the cold itself posed a direct challenge to the power sources that the state was counting on. Wind turbines iced up. Coal piles froze.
The biggest shortfall in energy production stemmed from natural gas. Gas pipelines were blocked with ice or their compressors lost power. Much of the gas that was available was prioritized for heating homes and businesses rather than generating electricity. That’s helpful for people who use gas for heating but less so for those who use electric furnaces.”
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“The Texas blackouts may also be a symptom of a lack of proper upkeep. “The ERCOT grid has collapsed in exactly the same manner as the old Soviet Union,” Ed Hirs, an energy fellow in the department of economics at the University of Houston, told the Houston Chronicle. “It limped along on underinvestment and neglect until it finally broke under predictable circumstances.””