Madero Grid — Plant Summary
- EIA Plant ID
- 63757
- Capacity
- 100 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries
- Status
- Operating
- Location
- Hidalgo, TX
- Operating Since
- 2023
- Generators
- 1
- Operator
- Madero Grid, LLC
- Parent Company
- —
- Annual Generation
- -14,893 MWh
- Capacity Factor
- -1.7%
- Balancing Authority
- Electric Reliability Council of Texas, Inc.
- ISO/RTO
- ERCOT
- NERC Region
- TRE
Madero Grid
OperatingBESS
Ranked #163 of 256 BESS plants in TX#322 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
2023
Operating Since
Location
Coordinates
26.1698, -98.3298
County
Hidalgo, TX
Nearby Plants
- Ignacio Grid Energy Storage SystemBESS100 MW · 0.6 km
- SMT Mission LLCBESS10 MW · 2.3 km
- Frontera Energy CenterNatural Gas529 MW · 8.1 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Madero Grid, LLC | — | — |
| Owner(s) | Madero Grid, LLC | — | — |
| Status | Operating | — | — |
Ownership Chain
No GEM tracker match for this plant — ownership chain unavailable.
About
Madero Grid is a 100 MW battery energy storage system (BESS) located in Hidalgo County, Texas. The plant, which began operating in 2023, is owned and operated by Madero Grid, LLC. It consists of a single generator utilizing lithium-ion battery (LIB) technology. The facility has a total storage capacity of 100 MWh, providing a duration of 1 hour at full output.
Madero Grid operates within the Electric Reliability Council of Texas (ERCOT) balancing authority and the Texas Reliability Entity (TRE) NERC region. As of the latest rankings, it is the 210th largest power plant in Texas out of 224, and the 496th largest nationally out of 514. The plant's primary fuel source is electricity (MWH), indicating it charges from the grid.
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
Generation
−1.2K MWh
Net Charging
-14.9K MWh
Annual Net Energy
-1.7%
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
HIGH confidencePoint of Interconnection
Nearest Substation
Railroad DC Tie · 138 kV
Substation Distance
< 10 km
Operator
Sharyland Utilities
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ERCOT
LMP Node
MADERO_RN
Pricing Hub
HB_SOUTH
Secondary Zone
LZ_SOUTH
Location Type
Resource Node
Node Source
EIA-860 direct report
News & Articles (10)Beta
Grid·capacity addition
Two years after a catastrophic power outage, this state is bouncing back with the largest-ever energy facility of its kind
The Madero and Ignacio energy storage plants are now some of the most cutting-edge energy facilities in the world.
The Cool Down·2 years ago
Regulatory·federal policy
The Texas GOP’s War on Renewable Energy
What's behind the Legislature's relentless campaign against wind and solar power, which are saving Texans billions?
Texas GOP (regulator)
Texas Monthly·2 years ago
Grid·capacity addition
More than 500 MWh of standalone storage capacity starts in Texas
Wärtsilä Energy and Eolian LP have partnered on a new 200 MW grid-scale battery system. They claim that it is the largest merchant energy...
Wärtsilä Energy (other)Eolian LP (other)
pv magazine International·2 years ago
Industry·technology
World’s biggest merchant battery system opened in Texas
Wärtsilä says newly opened Texas batteries are world's largest fully-merchant and market-facing energy storage facility built to date.
Wärtsilä (other)
Renew Economy·2 years ago
Last updated 2026-03-14
View all 10 articles