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Joe Deely's picture
Partner Deely Group

Involved with high-tech for last 30 years. Interested in energy.

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  • May 7, 2020

Big news from North Dakota as Great River Energy will be replacing its Coal Creek plant with new wind installations. North Dakota is a strong coal state and I would expect it to be one of the last states "standing" when it comes to remaining coal.

Note: Coal Creek has averaged about 8-9TWh of generation per year over the last decade - so this plant is responsible for about 1% of the remaining US coal generation.

Great River Energy plans to take the following actions:

  • Retire the 1,151-megawatt (MW) Coal Creek Station in the second half of 2022
  • Add 1,100 MW of wind energy purchases by the end of 2023
  • Modify the 99-MW, coal and natural gas-based Spiritwood Station power plant to be fueled by natural gas
  • Install a 1-MW, long-duration battery demonstration system
  • Support the repowering of the Blue Flint biorefinery with natural gas

Expect to see a lot more coal closure announcement this year.


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Joe Deely's picture
Joe Deely on May 7, 2020

An interesting sidenote related to this project.  A pilot for long-term storage - 150 hours - just over 6 days.

Great River Thursday also announced a pilot program for a new power storage technology, which would warehouse electricity for considerably longer than current grid batteries.

Batteries with long-term storage capacity are important to the long-term growth of renewable energy

Storage technology developed by Massachusetts-based Form Energy could deliver power for 150 hours, compared to the four hours common in lithium-ion grid batteries.

Great River says it’s working with Form Energy on a 1-megawatt battery that would be completed in late 2023 and located in Cambridge, Minn.

Matt Chester's picture
Matt Chester on May 7, 2020

Do you know if the higher amount of storage time will come with tradeoffs like lower efficiency or a lower ceiling of capacity?

Joe Deely's picture
Joe Deely on May 7, 2020


I have no idea.

There is a thread on Twitter you might want to look at...

Matt Chester's picture
Matt Chester on May 8, 2020

Terrific, thanks Joe. I follow Justin on Twitter but must have missed this one

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