Energy lawyer and law school professor William Massey, at 10 years the longest-serving commissioner ever at the Federal Energy Regulatory Commission, discusses the vast body of legal precedent finding FERC has expansive authority under the Federal Power Act and Natural Gas Act, and reviews pending cases before the Supreme Court that may test whether this expansive view of FERC's authority will continue under the court's new Major Questions Doctrine.

"The courts have said FERC’s authority is at its zenith when it comes to remedying undue discrimination. And FERC has remembered that and bases many of its policy choices on finding undue discrimination in either natural gas or electricity markets," Massey says. "We'll have to wait and see whether this Major Questions Doctrine, as it plays out over the next few years, whether it limits FERC’s authority in certain ways."

Massey also speaks to FERC's early days restructuring natural gas and electricity markets in the 1990s, the vast economic benefits that consumers have accrued as a result, and suggests that opening up the electricity sector to greater competitive forces will help policy makers bring about the clean-energy transition in response to the climate change threat at least cost to consumers.