Data center growth cited in defense of MISO transmission plan

By Jeffrey Tomich | 10/01/2025 06:51 AM EDT

Five Republican-led states are challenging the $22 billion build-out of two dozen high-voltage power lines in the Midwestern regional grid.

The Midcontinent Independent System Operator manages the grid in all or part of 15 states.

The Midcontinent Independent System Operator manages the grid in all or part of 15 states. MISOEnergy/YouTube

A challenge to the Midwest grid operator’s $22 billion plan for a high-voltage power backbone in the region is drawing blowback from a wide array of interests on both sides of the political aisle.

Among the arguments for dismissing the complaint by utility commissions in five GOP states is a concern on no one’s radar years ago when the Midcontinent Independent System Operator (MISO) began plotting a multiyear Long Range Transmission Plan — powering AI data centers.

Those urging the Federal Energy Regulatory Commission to deny the complaint seeking to block the transmission plan include governors and regulators from a half dozen states and some large electricity users, including the trade association for the data center industry, as well as utilities and their lobby, the Edison Electric Institute.

Advertisement

“Developing long-term infrastructure is time and resource intensive,” EEI said in a filing last week. “Time is of the essence to … provide reliable affordable energy to customers and meet our nation’s economic and national security priorities, including achieving dominance in artificial intelligence.”

GET FULL ACCESS