Great Kiskadee Storage — Plant Summary
- EIA Plant ID
- 68189
- Capacity
- 100 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries
- Status
- Operating
- Location
- Hidalgo, TX
- Operating Since
- 2025
- Generators
- 1
- Operator
- Great Kiskadee Storage, LLC
- Parent Company
- —
- Annual Generation
- -7,210 MWh
- Capacity Factor
- -0.9%
- Balancing Authority
- Electric Reliability Council of Texas, Inc.
- ISO/RTO
- ERCOT
- NERC Region
- TRE
Great Kiskadee Storage
OperatingBESS
Ranked #165 of 256 BESS plants in TX#335 of 837 nationally
100 MW BESS operating in Hidalgo, TX — Electric Reliability Council of Texas, Inc.
EIA
100 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2025
Operating Since
Location
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Great Kiskadee Storage, LLC | — | — |
| Owner(s) | Apex SA Investor, GridFlex Storage, LLC | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
Great Kiskadee Storage is a 100 MW battery energy storage system (BESS) located in Hidalgo County, Texas. The plant, which began operating in 2025, has a single generator and is owned and operated by Great Kiskadee Storage, LLC. The batteries have a duration of 2.49 hours.
The facility operates within the Electric Reliability Council of Texas (ERCOT) balancing authority. According to state rankings, Great Kiskadee Storage is the 218th largest power plant in Texas out of 224, and nationally it ranks 499th out of 514.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
TRE
Balancing Authority
Electric Reliability Council of Texas, Inc.
Grid Voltage
138 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Interconnection Queue5 projectsBeta
Big Five Storage
ActiveBattery102.18 MWERCOT
Generation
−524 MWh
Net Charging
-7.2K MWh
Annual Net Energy
-0.9%
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 confidencePoint of Interconnection
Nearest Substation
Stewart Road Substation · 138 kV
Substation Distance
2.931 km
Operator
American Electric Power
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ERCOT
LMP Node
GKS_BESS_RN
Pricing Hub
HB_SOUTH
Secondary Zone
LZ_SOUTH
Location Type
Resource Node
Node Source
Curated node match
News & Articles (9)Beta
Industry·corporate
Apex Clean Energy Adds 625 MW as Four Wind and Storage Projects Now Online
A Virginia-based renewable energy group has expanded its operating and construction portfolio to more than 3 GW of generation capacity.
Apex Clean Energy (developer)
POWER Magazine·8 months ago
Industry·technology
Apex brings 100 MW / 200 MWh battery storage system online in Texas for ERCOT market
The facility makes use of Powin Centipede battery energy storage systems (BESS) to arbitrage power and supply grid services.
Apex (developer)Powin Centipede (other)
ESS News·1 years ago
Industry·corporate
Apex Clean Energy’s 100MW/200MWh Texas BESS reaches commercial operations
Renewable energy developer and operator Apex Clean Energy announced COD for the 100MW/200MWh Great Kiskadee Storage BESS located in Texas.
Apex Clean Energy (developer)Great Kiskadee Storage BESS (operator)
Energy-Storage.News·1 years ago
Industry·corporate
Apex Clean Energy’s Great Kiskadee Storage begins commercial operations in Texas, US
Apex Clean Energy has announced the start of commercial operations at Great Kiskadee Storage, a 100MW/200MWh utility-scale battery facility in Hidalgo County,...
Apex Clean Energy (developer)Great Kiskadee Storage (operator)
Energy Monitor·1 years ago
Last updated 2026-03-14
View all 9 articles