Texas Legislature held marathon hearings a week after the freeze. That testimony, and an increasing flow of information from operators on the ground, has produced a
more complete picture of what went wrong during a storm that plunged Texas into a deep freeze colder than most of Alaska.
Federal and state tax policy have encouraged the overbuilding of wind, and to a lesser extent, solar power, resulting in cheap, subsidized power flooding the Texas grid. This inexpensive but unreliable power has acted as a powerful disincentive to build needed natural gas power plants.
In the past five years, Texas saw an increase of about 20,000 megawatts of installed wind and solar capacity with a net loss of 4,000 megawatts of gas and coal-fired power plants. This 4,000 megawatts, had it been built or not prematurely retired, would have saved lives during the 2021 St. Valentine’s Day Storm.
We know that wind turbines were affected, with half of them freezing up. Over the course of 2019, Texas wind produced about 34% of its capacity – from hour-to-hour and season-to-season, sometimes more than 70%, sometimes close to zero. At one point during the storm, solar was producing no electricity while wind produced about 1% of its potential output. Since electricity must be produced the moment it is needed, that meant that natural gas power plants had to make up the shortfall.
The emerging data from thermal – gas, coal, and nuclear – power plants suggests that there were some cold-related failures. But, as ERCOT struggled to keep the lights on, the grid became unstable, tripping additional power plants offline to protect their massive generators from destructive interaction with a fluctuating line frequency.
As ERCOT issued the order to start load shedding – rotating blackouts – some of the darkened circuits included vital oil and gas infrastructure. This uncoordinated move starved natural gas power plants of their fuel – leading to a further loss of power and the widespread and incorrect rumor that wellhead and pipeline freeze off contributed to the disaster.
When these systems lost power, gas production dropped 75%. An Obama-era environmental rule that forced oilfield compressors to switch from natural gas to electric likely made things worse. Eventually, power was restored, and natural gas production ramped back up to meet electricity generation demand.
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Texas' blackouts – here's the truth about why they happened and what we have to do nextWhy are you ignoring the windmills work just fine in cold states that require grid operators to winterize them so they don't fail?
Windmills didn't freeze up because they're windmills. They work just fine in Alaska. They froze up because Texas was too stupid to make the installers pay to ensure they couldn't freeze up. Full stop.