The Midcontinent Independent System Operator asked federal regulators on Oct. 2 to approve a fast-track review process for large electricity loads and the new generation that would power them. The grid operator, which manages the power grid across 15 states from Louisiana to Minnesota, proposed a 120-day study period designed to speed up approval for projects like data centers and manufacturing facilities that need massive amounts of electricity. The filing comes as MISO expects its total load to climb between 1% and 3% annually through 2044, driven largely by demand from potential data centers and industrial operations.

The proposed Large Load Addition Resource Study process would apply to loads exceeding 200 MW and new generation located in the same local resource zone, which typically align with individual state boundaries across MISO's 10-zone footprint. The grid operator would evaluate up to 10 applications during three annual study periods. Under the proposal, both the generating facility's commercial operation date and the associated large load's in-service date must fall within three years from when the application is submitted. The generation and load would be required to remain paired for at least 15 years, though the load could begin receiving service in phases as long as it reaches the full transmission service amount requested by the time the generating facility starts operating.

MISO told regulators that "LARS provides MISO with a targeted tool to address the intersection of significant large load additions, optimized network upgrades with generation and load, generation development, and supports resource adequacy." The grid operator explained that conducting simultaneous large load and generation interconnection studies would yield more efficient network upgrade solutions. According to the filing, "The goal of LARS is not necessarily to find the lowest cost solution for either the load or generation but to identify the solution that best fits both the generation and load needs at the lowest cost." The proposal includes various requirements, such as non-refundable deposits, aimed at filtering out speculative projects.

The new process responds partly to FERC's mid-June determination that MISO's existing rules for large loads were inadequate, particularly for integrating loads and generation located close together onto the grid. MISO emphasized that running parallel studies would produce more cost-effective solutions that are more efficient for the overall grid rather than optimizing for either the load or generation individually. The proposal won't affect generating projects already in MISO's standard interconnection queue, and the grid operator said it would apply the same evaluation standards to LARS applications as it does to other interconnection processes. MISO asked FERC to issue a decision by Dec. 2 so it could launch the first study period early next year, positioning the fast-track option as a tool to manage surging electricity demand while maintaining grid reliability.