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Public Service Company of Oklahoma Completes Acquisition of Green Country Power Plant

LCG, July 3, 2025--American Electric Power (AEP) announced today that on June 30, the 795-MW Green Country Power Plant officially became part of the generation portfolio of Public Service Company of Oklahoma (PSO), a unit of AEP.

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Alliant Energy Submits Plans to Iowa Utilities Commission for the Addition of 1,000 MW of Wind Capacity

LCG, July 2, 2025--Alliant Energy today announced plans to add up to 1,000 MW of wind energy generating capacity in Iowa to meet demand and ensure reliable, affordable energy for its customers. The plans are included in a filing with the Iowa Utilities Commission (IUC), and the company anticipates a decision from the IUC in the first quarter of 2026.

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Industry News

Georgia Power Battery Energy Storage System Approved by PSC

LCG, October 12, 2021--Georgia Power announced that it has received approval from the Georgia Public Service Commission (PSC) to build, own, and operate a new battery energy storage system (BESS). The new Mossy Branch Battery Facility project design calls for a 65 MW/260 MWh system that will be part of a larger, 80-MW BESS portfolio approved in Georgia Power's 2019 Integrated Resource Plan (IRP).

Georgia Power’s Renewable Development Director stated, “It is an exciting time to be working on new ways to maximize the value of sustainable, renewable energy and the addition of battery storage complements and enhances the value of renewable generation. Developing storage technologies of this magnitude will help us to continue meeting our customers' needs. The Mossy Branch project will help the company evaluate the value and benefits battery storage provides to the electric system, as well as learn how to optimize operation and maintenance of the BESS facilities."

The Mossy Branch Battery Facility site is located on 2.5-acres near Columbus, Georgia. The BESS will be designed as a standalone unit that will connect to and charge directly from the electric transmission grid.

Georgia Power selected Wärtsilä to provide this new facility's Engineering, Procurement, and Construction (EPC) services.
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