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  1. Home
  2. Company
  3. About Us
  4. Green Country Power Plant

PSO Files for Purchase of Green Country Power Plant

At PSO, our top priority is ensuring you have safe and reliable energy. To better serve you, we have filed a request with the Oklahoma Corporation Commission (OCC) to recover costs for acquiring Green Country, a 795 MW combined-cycle natural gas-fired generation plant in Jenks, Oklahoma. This new addition will enhance our capacity and power generation, ensuring we meet your energy needs both now and in the future.

Investing in Stability and Local Energy Ownership

It's all about keeping the power flowing to homes and businesses across Oklahoma and improving your service. Green Country is already connected to PSO's electric grid, making for a seamless transition. The Green Country plant emerged as the clear choice for several reasons including:

Price Stability for Customers

Adding to PSO's generation fleet will enable cost efficiencies and insulate customers from energy price swings that are inherent within the daily spot energy market, particularly those that are foreign owned.

Local Ownership

Green Country has been owned and operated by J-Power USA Generation L. P., a 50/50 joint venture with John Hancock Infrastructure Fund and Electric Power Development Co., Ltd., headquartered in Chuo-ku, Tokyo Japan. If approved, this generation plant would be wholly owned and managed by PSO.

Community Support

When PSO acquires the Green Country Power Plant, Tulsa County will receive more than three times the ad valorem tax revenue it is currently collecting from the facility. This will help support jobs, schools, and local businesses.

Our Commitment to Affordability and Transparency

PSO understands the price concerns of our customers, and we work to keep prices low and reliability high. PSO's past three rate changes - going back to 2018 - have remained at or below the national inflation rate. PSO's prices have been competitive regionally and well below national averages for more than a decade.

Green Country Natural Gas Plant, Tulsa County

What's Next

The purchase of the Green Country power plant is subject to state and federal regulatory approval. A final decision from regulators in expected no later than May 2025 with PSO assuming ownership June 2025.

Frequently Asked Questions

How much would this filing request increase PSO bills?

If approved, the total bill impact for the residential class would be an increase of less than a penny/cent ($ .0065) per kWh or about $7.24 per month for the average PSO residential customer. This represents a 5% increase for the typical PSO residential customer.

How do PSO's rates compare to others in the region?

PSO understands the price concerns of our customers, and we work to keep prices low and reliability high. PSO's past three rate changes - going back to 2018 - have remained at or below the national inflation rate. PSO's prices have been competitive regionally and well below national averages for more than a decade.

Has PSO purchased power from this plant?

Yes. PSO always seeks the most economic, dispatchable power for customers and Green Country has provided that when the energy demand was needed.

Why hasn't PSO sought to buy this plant before if it is such a good deal?

Simply put, this generation facility was not placed on the market for sale until September 2023, when PSO was made aware of this opportunity.

Why does PSO need this power? How does this help customers?

There are three reasons that are driving this filing. Customer needs for power are increasing. Additional generation, such as a plant like Green Country, can help to supply that power and meet that need. Second, the Southwest Power Pool, the regional transmission entity that governs that customers in the region have enough power, has recently increased the power margin that PSO must provide (12% to 15%). Three, the Green Country plant is available for sale now and previously has not been available for PSO to purchase.

Is the Green Country plant in good, working condition?

Yes. The commercial operation date for Green Country was February 2002 and the plant is in excellent condition, ultimately being able to provide tremendous long-term energy security to PSO customers.


Related information...
PSO Franchise
Public Service Company of Oklahoma Leadership
Public Service Company of Oklahoma Electric Rates

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