BEN TORRES/THE DALLAS MORNING NEWS VIA AP
Ivet Cantu, 45, points to her electricity bill from Griddy energy on an app showing her energy cost of $3,114.27, during recent severe cold weather outside of her home in Dallas, on Friday, Feb. 19. In Texas’ deregulated electricity market, Griddy and some other power suppliers charge customers wholesale variable rates per kilowatt-hour.