Minco II Energy Storage — Plant Summary
- EIA Plant ID
- 68802
- Capacity
- 65 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries
- Status
- Operating
- Location
- Grady, OK
- Operating Since
- 2025
- Generators
- 1
- Operator
- Minco II Energy Storage LLC
- Parent Company
- —
- Annual Generation
- -9,422 MWh
- Capacity Factor
- -2.5%
- Balancing Authority
- Southwest Power Pool
- ISO/RTO
- SPP
- NERC Region
- MRO
Minco II Energy Storage
OperatingBESS
Ranked #3 of 5 BESS plants in OK#375 of 837 nationally
65 MW BESS operating in Grady, OK — Southwest Power Pool
EIA
65 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2025
Operating Since
Location
Coordinates
35.3053, -97.8912
County
Grady, OK
Nearby Plants
- Redbed Plains Wind FarmWind99.1 MW · 3.5 km
- TuttleSolar4 MW · 6.1 km
- Minco Wind I, LLCWind99.2 MW · 9.5 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Minco II Energy Storage LLC | — | — |
| Owner(s) | Minco II Energy Storage LLC | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
Minco II Energy Storage is a 65 MW battery energy storage system located in Grady County, Oklahoma. The plant, which began operating in 2025, has a single generator utilizing battery technology and is owned and operated by Minco II Energy Storage LLC. The primary fuel type is listed as MWH, indicating that it draws power from the grid to charge its batteries.
The facility operates within the Southwest Power Pool (SPP) balancing authority and the Midwest Reliability Organization (MRO) NERC region. Minco II Energy Storage is ranked as the 3rd largest of 5 battery storage plants in Oklahoma and 570th out of 1205 nationally. The battery system has a duration of 1 hour.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
MRO
Balancing Authority
Southwest Power Pool
Grid Voltage
345 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
−1.6K MWh
Net Charging
-9.4K MWh
Annual Net Energy
-2.5%
Capacity Factor
Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.
Financial Data
No financial data available for this plant.
Pricing & Market Data
MEDIUM confidenceMarket Position
ISO/RTO Market
SPP
LMP Node
CSWS.HCPP.RBPW
Pricing Hub
SPP South Hub
Node Source
Curated node match
News & Articles (10)Beta
Hazards·wildfire
Red Flag Warning: Grant; Kay; Garfield; Noble; Blaine; Kingfisher; Logan; Payne; Caddo; Canadian; Oklahoma; Lincoln; G
Red Flag Warning issued March 21 at 12:09PM CDT until March 22 at 9:00PM CDT by NWS Norman OK
Red Flag Warning (hazard)
NWS Norman OK·5 days ago
Grid·capacity addition
Solar project in Grady County to create 300 jobs, generate $32 million in tax revenue
OKLAHOMA CITY, Okla. (KOKH) — A solar energy center in Minco is projected to bring in hundred of temporary jobs and generate enough power...
KOKH·11 months ago
General
NextEra Energy Partners acquires renewable energy portfolio
NextEra Energy Partners will acquire a 50 percent interest in an approximately 2,520-megawatt (MW) renewables portfolio from a subsidiary of NextEra Energy...
Daily Energy Insider·4 years ago
General
NextEra Energy Partners acquires renewable energy portfolio
NextEra Energy Partners will acquire a 50 percent interest in an approximately 2,520-megawatt (MW) renewables portfolio from a subsidiary of NextEra Energy...
Daily Energy Insider·4 years ago
Last updated 2026-03-21
View all 10 articles