Mammoth Plains
NextEra Energy Partners, LPDewey CountySPP
Mammoth Plains reports 226.1 MW wind in SPP.
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Overview
- Registry anchor
- Plant 59284
- plant-59284
Infrastructure record
- Turbines
- 13
- Manufacturers
- GE
- In service
Timeline and sources
Project milestones and public references behind the asset profile.
Project timeline
- Generator enters operationEIA-860
EIA-860 lists generator GE1.7 with this operating date.
- NextEra Energy Partners closes 664 MW acquisition including Mammoth…ippjournal....
From NextEra Energy Resources
Sources
Common questions about Mammoth Plains
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
How big is Mammoth Plains?
Mammoth Plains reports 226.1 MW wind of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Aug 2026.
What kind of plant is Mammoth Plains?
Mammoth Plains is a Onshore Wind Turbine facility in Dewey County, OK, participating in the SPP market.
Where is Mammoth Plains located?
Mammoth Plains is in Dewey County, OK, inside the SPP balancing area.
Who operates Mammoth Plains?
Mammoth Plains is operated by Mammoth Plains Wind Project according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
How much electricity does Mammoth Plains generate?
Mammoth Plains reported 719.9 GWh over the twelve months to 2024-12. Figures are net generation as filed to EIA-923.
How does Mammoth Plains compare to other plants?
By capacity, Mammoth Plains ranks #190 of 1,374 operating plants of the same technology nationally. It ranks #21 of 71 in OK.
Co-located assets
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.