Whistle Solar
56.3 MW generation in Navarro, TX · In queue since November 2021 · Proposed COD May 2028
56.3 MW
Capacity
1
Components
Solar
4y 6m
In Queue
Facility Study
IA Status
COD target: 2028
Total Duration
6y 6m
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: 2028-05-15
The Whistle Solar project is a proposed 56.3 MW solar generation facility in Navarro County, Texas. The project, developed by Gransolar Texas Nineteen, LLC, is interconnected within the ERCOT region under queue ID ERCOT-25INR0029. It entered the queue on November 23, 2021, and has a proposed commercial operation date of May 15, 2028. Its interconnection status is currently in the Facility Study phase.
The proposed project is linked to the existing Whistle Solar operating plant (EIA ID 67785). Recent news coverage has highlighted the project, with articles appearing in industry and deals publications.
Generated from interconnection queue and public data sources
State
TX
County
Navarro
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Gransolar Texas Nineteen, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
Tap 138kV 213 Haney _x0013_ 3478 Navarro
Data Source
LBNL + Live
- ISO / RTO
- ERCOT
- Trading Hub
- HB_NORTH
- Hub Confidence
- LOW
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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