Mammoth Plains

OperatingWind

Ranked #19 of 69 Wind plants in OK#212 of 1442 nationally

226.1 MW Wind operating in Dewey, OK — Southwest Power Pool

EIAGEMWD

226.1 MW

Nameplate Capacity

Generators

unit

Onshore Wind Turbine

Technology

2014

Operating Since

Location

Coordinates

35.9789, -98.7103

County

Dewey, OK

Nearby Plants

Crossroads Wind Farm
Wind227.5 MW · 11.8 km
Taloga Wind LLC
Wind130 MW · 24.5 km
Seiling Wind I
Wind199 MW · 30.0 km

Ownership & Operator

Owner data does not fully agree across sources.

EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.

Field	EIA	GEM	Wikidata
Operator	Mammoth Plains Wind Project	NextEra Energy	—
Owner(s)	Mammoth Plains Wind Project	NextEra Energy	—
Status	Operating	operating	—

Ownership Chain

About

Mammoth Plains is a 226.1 MW wind power plant located in Dewey County, Oklahoma. The facility began operating in 2014 and is owned by NextEra Energy, with Mammoth Plains Wind Project listed as the EIA operator. The plant utilizes a single generator consisting of multiple onshore wind turbines. Specifically, it employs GE1.7-100 model turbines manufactured by GE Wind, each with a rotor diameter of 100 meters and a hub height of 80 meters.

In the most recent year of record, Mammoth Plains generated 719,868 MWh of electricity, achieving a capacity factor of 36.3%. The plant operates within the Southwest Power Pool (SPP) balancing authority and the Midwest Reliability Organization (MRO) NERC region. Mammoth Plains ranks as the 19th largest wind farm in Oklahoma out of 57, and 209th nationally out of 734 wind facilities. Recent news coverage of the plant has focused on regulatory matters.

Generated from EIA, GEM, and public data sources

EIA Plant Profile Wikidata Global Energy Monitor

Engineering & Generators