The Oklahoma Corporation Commissioners approved a plan by Public Service Co. of Oklahoma (PSO) to add more than a half-gigawatt of wind-generated electricity to PSO’s portfolio of power, reports The Oklahoman. PSO serves more than 550,000 customers in eastern and southwestern Oklahoma.

The Oklahoman reports that PSO will be allowed to spend $908 million to acquire 675 megawatts of new electricity, generated by wind farms across Oklahoma.

The savings are reported to come from two places. PSO expects savings to first come through federal production tax credits, and later through the reduced cost of generating electricity with wind rather than natural gas or coal, according to The Oklahoman.

The wind projects will add over 1,000 megawatts to the total capacity of the grid that covers the Great Plains operated by the Southwest Power Pool.

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