HOUSTON – Frustration is still boiling over the deadly freeze that ravaged Texas last month. A freeze, that according to ERCOT’s records, show’s a large number of facilities in the state going down. Some of them are the same ones that went down during a paralyzing North Texas freeze in 2011. Ten years ago, as a state senator, Hager authored legislation requiring the winterization of generators to avoid future failures. Ad“It’s the same lessons learned,” said deputy director of the Energy Institute at the University of Texas, Michael Webber.