Panhandle Flagship Solar 1
439.4 MW generation in Carson, TX · In queue since March 2023 · Proposed COD June 2031
439.4 MW
Capacity
1
Components
Solar
3y 2m
In Queue
Facility Study
IA Status
COD target: 2031
Total Duration
8y 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: 2031-06-30
The Panhandle Flagship Solar 1 project is a proposed 439.4 MW solar generation facility in Carson County, Texas. The project, developed by Panhandle Solar Group Operating Company LLC, is located within the ERCOT region and interconnected to the 345 kV Railhead Substation. It entered the ERCOT interconnection queue as entry ERCOT-27INR0022 on March 13, 2023, with a proposed commercial operation date of June 30, 2031. The project's interconnection status is currently in the Facility Study phase.
The proposed project consists of 439.4 MW of solar photovoltaic generation. Recent news coverage indicates interest in the project's potential impact on the electric grid.
Generated from interconnection queue and public data sources
State
TX
County
Carson
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Panhandle Solar Group Operating Company LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
345 kV Railhead Substation (RAILHEAD #79005)
Data Source
LBNL + Live
- ISO / RTO
- ERCOT
- Trading Hub
- HB_WEST
- Hub Confidence
- MEDIUM
- POI Substation
- Railhead Substation
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.
Last updated 2026-03-26
View all articlesTop solar plant owners in the US
Data tables and metrics from the powerplantsinfo.org database.
Compare Texas vs California solar
Summary analysis with parallel narrative sections and visualizations.
Top 10 solar states
Data tables and metrics from the powerplantsinfo.org database.
