New reports indicate that the Environmental Protection Agency (EPA) hid from internal concerns that new regulations could damage the reliability of the U.S. electric grid, as a member of the Federal Energy Regulatory Commission recently warned.

“The reality is that the EPA’s own staffers are—or used to be—worried,” writes the Wall Street Journal, “and their political superiors have erased the warnings.” Apparently, an internal EPA report on the Utility Mact rule suggested that “this regulation may detrimentally impact the reliability of the electric grid,” but the WSJ notes that those comments were scrubbed from the report that the EPA released to the public in May.