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SPP's Western Expansion Set for Implementation on April 1

LCG, March 13, 2026--The Southwest Power Pool (SPP) announced yesterday that leaders from the participating organizations voted unanimously to proceed as planned with expanding its regional transmission organization (RTO) services into the Western Interconnection. SPP sees the decision to proceed as planned as a strong signal of confidence as SPP and its partner utilities prepare for this key milestone, which will occur overnight between March 31 and April 1.

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Entergy Estimates Customer Savings of $5B from "Fair Share Plus" Data Center Agreements

LCG, March 6, 2026--Entergy yesterday announced approximately $5 billion in total savings for 2.3 million customers in Arkansas, Louisiana and Mississippi resulting from data center customer agreements in those states. Entergy, which completed its first data center customer agreement in 2024, projects the customer savings over the next 20 years and after the regulatory approval or acknowledgement of the public service commissions in those states.

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Industry News

Arrowhead-Weston Transmission Project Moves Forward

LCG, August 27, 2004--The Marathon County Board approved a proposal from American Transmission Company (ATC) to allow a new, 345-kV transmission line through a county-owned recreational area. The overall Arrowhead-Weston line between Hermantown and Wausau will extend 220 miles and is estimated to cost $420 million. The plan calls for completion of the project by 2008. Similar land use agreements will be required with other counties, plus about 850 landowners in Wisconsin and Minnesota.

The Wisconsin Public Service Commission last year approved construction of the Arrowhead-Weston line. Utilities, including Wisconsin Public Service Corp. and Minnesota Power, say it is needed to improve electric reliability. Furthermore, with locational marginal pricing (LMP) to be introduced next year by the Midwest ISO, the additional transmission capacity will tend to reduce locational price volatility.

Earlier this year, Minnesota Power started work on the Hermantown to St. Louis River section and plans to complete the 12-mile segment by early 2005.

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