Interim resource plan submission filed with PUC

Great River Energy recently filed an interim integrated resource plan (IRP) update with the Minnesota Public Utilities Commission (PUC) outlining the cooperative’s future power supply portfolio changes.

Generally submitted every two years, an IRP is a forward-looking document that requires utilities to give advance notice of how they plan to generate electricity for the next 15 years. Originally scheduled to be submitted April 1, 2021, the PUC granted Great River Energy a one-year extension on its full IRP to allow time for making progress on the co-op’s plans to sell or close its Coal Creek Station plant and to refine its forecast of the load impacts the change will have on its system.

As part of the extension approval, the PUC required Great River Energy to submit an interim report which was filed April 1. In it, the cooperative shared the strategic power supply changes underway, including:

  • The closure or sale of Coal Creek Station by the end of 2022
  • Modifying Spiritwood Station to operate primarily on natural gas
  • Adding 900 megawatts (MW) of new wind resources by the end of 2023
  • Installing a 1-MW, long-duration battery demonstration system

The interim piece states all these efforts will decrease Great River Energy’s carbon emissions by 95%, relative to 2005 levels, while its power supply product becomes even more cost-effective to its membership.

The Midcontinent Independent System Operator (MISO) will play a key role in Great River Energy’s future power supply plans as it represents a low-cost opportunity to supply electricity to the cooperative’s members.

“Compared to 2020, the planned new wind resources and MISO market purchases, combined with our reliable portfolio of dispatchable peaking resources will make our 2025 resource mix cleaner and cheaper while demonstrating our commitment to reliability, affordability and care for the environment,” said Zac Ruzycki, director, resource planning.

Click here to view the interim IRP update. Great River Energy will file its next IRP on April 1, 2022.