Fierce River BESS — Project Summary

Queue ID
ERCOT-27INR0222
Capacity
284.49 MW
Technology
Battery
Status
active
Location
Starr, TX
Region
ERCOT
Developer
Rio Grande Solar LLC
IA Status
Facility Study

Fierce River BESS

BetaActiveBatteryERCOTLBNL + Live

284.49 MW storage in Starr, TX · In queue since March 2024 · Proposed COD February 2029

284.49 MW

Capacity

1

Components

Battery

2 years

In Queue

Facility Study

IA Status

COD target: 2029

Interconnection Timeline

Total Duration

4y 11m

Facilities Study50%
Queue EntryMar 22, 2024

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: 2029-02-22

Project Details

State

TX

County

Starr

Region

ERCOT

Developer

Rio Grande Solar LLC

Utility

Entity

ERCOT

Point of Interconnection

Tapping the 345 kV Line from Del Sol (Bus# 80355) to Frontera (Bus# 80119) ckt 1

Data Source

LBNL + Live

No news available for this project.