Transmission towers are shown on June 15, 2021 in Houston, Texas. The Electric Reliability Council of Texas (ERCOT), which controls approximately 90% of the power in Texas, has requested Texas residents to conserve power through Friday as temperatures surge in the state.
Brandon Bell | Getty Images
This story is part of CNBC’s “Transmission Troubles” series, an inside look at why the aging electrical grid in the U.S. is struggling to keep up,…