Millennium Energy Storage — Project Summary

Queue ID
ERCOT-25INR0431
Capacity
102.59 MW
Technology
Battery
Status
active
Location
Martin, TX
Region
ERCOT
Developer
Rocky Mountain Energy Development, LLC
IA Status
Facility Study

Millennium Energy Storage

BetaActiveBatteryERCOTLBNL

102.59 MW storage in Martin, TX · In queue since May 2023 · Proposed COD April 2027

102.59 MW

Capacity

1

Components

Battery

2y 10m

In Queue

Facility Study

IA Status

COD target: 2027

Interconnection Timeline

Total Duration

3y 11m

Facilities Study50%
Queue EntryMay 3, 2023

Interconnection request submitted to ISO/RTO

Interconnection StudyCurrent

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: 2027-04-30

Project Details

State

TX

County

Martin

Region

ERCOT

Developer

Rocky Mountain Energy Development, LLC

Utility

Entity

ERCOT

Point of Interconnection

Tap 138kV 23837 Buffalo - 23839 Triangle

Data Source

LBNL

No news available for this project.