FERC Approves SPP Planning Overhaul Aimed at Cutting Costs, Boosting Grid Reliability
The Federal Energy Regulatory Commission (FERC) signed off on a landmark initiative by Southwest Power Pool (SPP) to revolutionize its generator interconnection (GI) and long-term planning processes, a move that could save hundreds of millions of dollars.
SPP’s Consolidated Planning Process (CPP) — approved by FERC on March 13, 2026, and effective March 1, 2026 — streamlines SPP’s transmission planning and GI study processes and stands as a first-of-its kind blueprint for keeping the regional grid reliable and affordable.
FERC Commissioners Praise CPP Innovation
In their concurrences to the FERC Order, Commissioner Judy Chang wrote to, “commend SPP on taking a bold step to address the needs of its system.” Commissioner David Rosner wrote, “CPP represents the innovation that America needs to facilitate cost-effective transmission buildout and generator interconnection, reduce costs, and enhance system reliability. Today’s order is a step toward building a grid that can win the AI race, bring back American manufacturing, and deliver the abundant, reliable, and affordable energy we need.”
The approval underscores growing federal focus on modernizing grid planning as electricity demand rises due to data centers, artificial intelligence, and increased electrification across the economy.
Streamlining Transmission and Interconnection Planning
SPP’s board approved the CPP in August 2025. SPP anticipates the CPP will reduce administrative overhead and optimize future transmission planning portfolios, yielding hundreds of millions of dollars in savings.
“FERC’s approval of SPP’s CPP filing marks a defining moment, further demonstrating the value of a regional transmission organization,” said Casey Cathey, SPP vice president of engineering. “The CPP unlocks the ability to plan and build the grid at a scale and speed the future demands. It’s a powerful step toward a more reliable, resilient, and valuable system that can meet unprecedented load growth and connect the next generation of resources.”
Currently, SPP handles GI requests and its annual Integrated Transmission Plan (ITP) separately. The CPP will introduce a streamlined approach to transmission planning that forecasts overall needs and takes all grid requirements into account.
New GRID-C Rate to Provide Cost Certainty
The CPP will provide more certainty to investors in planning their budgets and a revamped funding structure to meet multiple needs.
SPP will open its first CPP window in April and publish the first Generalized Rate for Interconnection Development-Contribution (GRID-C) this fall: a new, standardized rate for system upgrade contributions that gives developers far greater upfront cost certainty before they commit to interconnection.
Transitional work will bridge the gap between the current ITP/GI and CPP frameworks as SPP moves toward full implementation of the new planning model.
The changes are expected to have significant implications for utilities, developers, and large energy users across the SPP footprint, including Oklahoma, as the region prepares for increased demand and grid expansion.