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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

Indiana Commission Authorizes Duke IGCC Project

LCG, November 21, 2007--Duke Energy yesterday received authorization from the Indiana Utility Regulatory Commission to proceed with the construction of a 630-MW coal-fired power plant that will use an advanced, integrated gasification combined cycle (IGCC) technology. Duke must still receive an air permit from the Indiana Department of Environmental Management. If received, construction may commence in 2008, with full operations achieved in early 2012.

The proposed project will be built at Duke's existing Edwardsport Generating Station near Vincennes, Indiana. Once the new plant is operational, the old facilities, which include coal and oil units that have a capacity of 160-MW, would be retired.

The IGCC design employed for the plant includes coal gasification. Synthetic gas created from coal is used in a gas turbine to generate electricity. The hot exhaust gas from the turbine heats water to produce steam to power a steam turbine and generate electricity a second time. The gasification process offers the potential for lower cost solutions to capture and sequester CO2, which may assist in efforts to thwart global warming.

The estimated cost of the plant is roughly $2 billion, which will be offset by over $460 million in local, state and federal tax incentives.

Duke filed an application for a "Certificate of Public Convenience and Necessity" (CPCN) with the Commission to build the plant in September 2006. Duke must justify and seek approval in a separate proceeding to recover any costs above the approved $1.985 billion.

The Commission directed Duke to proceed with its plans to develop carbon capture and storage studies and to file a proceeding with the Commission to establish that process in six months.
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