Stonewall BESS — Project Summary

Queue ID
ERCOT-28INR0253
Capacity
135 MW
Technology
Battery
Status
active
Location
Stonewall, Texas
Region
ERCOT
Developer
Stonewall ESS, LLC
IA Status

Stonewall BESS

BetaActiveOther - Battery Energy StorageERCOTLive · ERCOT

135 MW storage in Stonewall, Texas · In queue since February 2025 · Proposed COD December 2028

135 MW

Capacity

0

Components

1y 1m

In Queue

IA Status

COD target: 2028

Interconnection Timeline

Total Duration

3y 10m

Pre-Study0%
Queue EntryFeb 25, 2025

Interconnection request submitted to ISO/RTO

Interconnection Study

ERCOT uses a serial "connect and manage" approach — fastest among major ISOs.

Typical: 18–30 months (fastest major ISO)

Interconnection Agreement

Interconnection agreement not yet executed

Typical: 30–60 days (negotiation)

Commercial Operation

Proposed COD: 2028-12-29

Project Details

State

Texas

County

Stonewall

Region

ERCOT

Developer

Stonewall ESS, LLC

Utility

Entity

ERCOT

Point of Interconnection

tap 138kV 6150 SPUR4A - 6158 ASPM4A

Data Source

Live · ERCOT

No news available for this project.