Texas Grid Operator to Be Investigated by Congressional Subcommittee Texas' costliest natural disaster will be the subject of a congressional investigation by a House Oversight subcommittee thanks to Rep. Ro Khanna, D-Calif., who is concerned about ERCOT's lack of preparation for extreme winter weather. March 7, 2021, 11am PST | Irvin Dawid Share Winter storm 2021, as The Texas Tribune has dubbed it, "which killed dozens around the state, is expected to be the costliest natural disaster in Texas' history, even costlier than Hurricane Harvey, which inflicted $125 billion in damage," writes Bryan Mena, the D.C. reporting fellow for The Texas Tribune, on March 3. "It is still too early to tally the total cost of the destruction."