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SPP and Member Utilities Successfully Achieve Western Expansion Milestone

LCG, April 2, 2026--Southwest Power Pool (SPP) today announced that the expansion of its service territory into the Western Interconnection has been a success. The milestone makes SPP the first regional transmission organization (RTO) with services spanning the Eastern and Western Interconnections. Its member organizations, which cover all or part of 17 states, can now benefit from a more operationally and geographically diverse integrated system.

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Holtec Achieves Milestone towards Restarting Palisades Nuclear Facility and Advances Plans to Build Two SMRs at Palisades Site

LCG, March 31, 2026--Holtec International yesterday announced that it successfully completed a milestone test necessary to return Holtec's Palisades Nuclear Generating Station to service. The 805-MW pressurized water reactor (PWR) is located in Michigan and was shut down by Entergy in May 2022. Holtec acquired the facility in June 2022 and has pursued a path to return the plant to service.

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Industry News

Midwest ISO and Southwest Power Pool Will Merge

LCG, Feb. 25, 2002--The directors of the Midwest Independent Transmission System Operator Inc. (ISO) and Southwest Power Pool Inc. (SPP) gave their approval to a merger of the two power transmission grid managers.

The resulting organization would have responsibility for transmission operations in twenty states and in the Canadian province of Manitoba. The Midwest ISO projects that it will submit required documents to FERC by March 15, and finalize the merger by the close of the second quarter.

The nonprofit Midwest ISO is currently negotiating with the for-profit Alliance RTO, following a December order from FERC for the two to merge, based on transmission bottlenecks that could persist if the two remained separate.

Some state representatives have asked for more justification for FERC's emphasis on the RTO concept. FERC, which is making the right of utilities to compete in deregulated power markets dependent on their membership in an RTO, will release a cost-benefit study next week, according to a spokesman.

Negotiations over the possible terms of a Midwest-Alliance merger were held up most recently when members of the Midwest ISO found Alliance's proposed transmission rates unacceptable. The Alliance RTOs members include Indiana Michigan Power Co., American Electric Power Co Inc., and Northern Indiana Public Service Co.
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