Introduction
The jurisdictional boundary between the Federal Energy Regulatory Commission (FERC) and the states is being actively contested, from challenges to landmark transmission planning rules to disputes over emergency cost-allocation orders, in ways that carry significant legal, financial, and operational implications for energy companies. For utilities, independent power producers, and transmission developers, understanding these dynamics is now a strategic imperative.

The Jurisdictional Divide: A Bright Line That Isn’t
The Federal Power Act divides authority between FERC and the states: FERC exercises jurisdiction over interstate transmission and wholesale electricity sales, while states retain authority over generation facilities, retail rates, and decisions about resource mix. The D.C. Circuit has regularly been called upon to “referee the Federal Power Act’s jurisdictional line separating [FERC’s] jurisdiction over the federal wholesale market and States’ jurisdiction over facilities used in local distribution.”1