Texas Observer: “Experts hired by the Texas Public Utility Commission, which oversees the state’s electric and water utilities, concluded that power-generating companies like Luminant had failed to understand the “critical failure points” that could cause equipment to stop working in cold weather.
In May 2014, the PUC sought changes that would require energy companies to identify and address all potential failure points, including any effects of “weather design limits.”
Luminant argued against the proposal.
In comments to the commission, the company said the requirement was unnecessary and “may or may not identify the ‘weak links’ in protections against extreme temperatures.”
“Each weather event [is] dynamic,” company representatives told regulators. “Any engineering analysis that attempted to identify a specific weather design limit would be rendered meaningless.”
By the end of the process, the PUC agreed to soften the proposed changes. Instead of identifying all possible failure points in their equipment, power companies would need only to address any that were previously known.
The change, which experts say has left Texas power plants more susceptible to the kind of extreme and deadly weather events that bore down on the state last week, is one in a series of cascading failures to shield the state’s electric grid from winter storms, ProPublica and The Texas Tribune found.”