Dolomite Storage
125.7 MW storage in Ellis, TX · In queue since September 2023 · Proposed COD December 2026
125.7 MW
Capacity
1
Components
Battery
2y 8m
In Queue
Facility Study
IA Status
COD target: 2026
Total Duration
3y 3m
Interconnection request submitted to ISO/RTO
ERCOT uses a serial "connect and manage" approach — fastest among major ISOs.
Typical: 18–30 months (fastest major ISO)
Interconnection agreement not yet executed
Typical: 30–60 days (negotiation)
Proposed COD: 2026-12-01
The Dolomite Storage project is a proposed 125.7 MW battery energy storage system in Ellis County, Texas. Developed by BT Wilson Storage, LLC, the project is interconnected within the ERCOT region and entered the interconnection queue as ERCOT-25INR0495 on September 8, 2023. The proposed commercial operation date is December 1, 2026, and the project is currently in the Facility Study phase of the interconnection process.
The proposed project is linked to the existing Dolomite Storage operating plant (EIA ID 68166). The interconnection point of contact is the 218 Rockett 69kV substation. The project has appeared in recent news coverage.
Generated from interconnection queue and public data sources
State
TX
County
Ellis
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
BT Wilson Storage, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
218 Rockett 69kV
Data Source
LBNL + Live
- ISO / RTO
- ERCOT
- Trading Hub
- HB_NORTH
- Hub Confidence
- HIGH
This project's market context is estimated from its Point of Interconnection. Hub and node assignments are approximate and based on geographic inference from the POI substation name.
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