Lawmakers already had been pressuring FERC to improve physical security on the electric grid following the Metcalf incident.
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House Republicans are adding their voices to a growing number of lawmakers concerned about federal regulators’ management of sensitive information about the electric grid.

Capitol Hill has been buzzing about how the Federal Energy Regulatory Commission protects certain information following a Wall Street Journal story that, citing an agency analysis, said coordinated attacks at nine key substations could cause coast-to-coast blackouts for weeks, even months.

In the letter released Friday, the House Republicans asked LaFleur for the names of all agency employees who worked on grid security following a military-style attack by armed gunmen in April 2013 at the Metcalf substation near San Jose, Calif. They also asked for communications — both internal and with the Energy Department — and evaluations about grid security dating to 2012.