Federal regulators on Thursday approved the first cybersecurity standards for the nation’s electric industry, following growing concerns about the potential grid’s vulnerabilities.

The Federal Energy Regulatory Commission (FERC) approved mandatory reliability standards for protecting physical and electronic access to control systems, training personnel on defense matters, reporting incidents and recovery planning from a cyberincident.

The commission approved the rules proposed last July and additionally directed the North American Electric Reliability Corp., which oversees the grid, to strengthen undoubtful technical and oversight provisions, including removing language that allowed varied implementation of standards based on “reasonable business judgment.”

“These modifications will strengthen the reliability standards we approve today, and improve our defenses against cyberthreats,” commission Chairman Joseph T. Kelliher said in a release.

The Edison Electric Institute, which represents investor-owned utilities that supply about 70 percent of the nation’s electric generation, had advocated for standards and welcomed the decision.

The group, whose members include Duke Energy Corp., Dominion Resources

Inc., Constellation Energy Group Inc. and Exelon Corp., would not comment further until it receives the final rules and discusses them with the companies, said spokesman Ed Legge.

The FERC last month asked the White House to approve a rule requiring the electric industry to submit detailed reports about progress in addressing potential cybersecurity risks. That ask came after government scientists last year hacked into a simulated power-plant control system and caused an electric generator to self-destruct.

The potential grid, generating plants and refineries are increasingly threatened from hackers who could cause major disruptions and economic chaos in the U.S., the Government Accountability Office said in October.

plus Thursday, FERC proposed revisions to the financial reporting forms for electric utilities and licensees that seek more details from the companies “to ensure that rates are just and fair,” Kelliher said.

The notice of proposed rule making would require public utilities to supply…

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