Horizon Solar
204.09 MW generation in Frio, TX · In queue since March 2019
204.09 MW
Capacity
1
Components
Solar
7y 2m
In Queue
IA Executed
IA Status
Signed Jul 2019
Queue → IA
4 months
Total Duration
4 months
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 executed — binding commitment to build
Typical: 30–60 days (negotiation)
Construction pending
Typical: 12–24 months
Commercial operation date not yet determined
Horizon Solar is a proposed 204.09 MW solar generation project located in Frio County, Texas. The project, developed by Horizon Solar, LLC, is interconnected within the ERCOT region under queue ID ERCOT-21INR0261. The project entered the queue on March 5, 2019, and has an Interconnection Agreement (IA) executed on July 12, 2019. Its status is currently listed as suspended.
The proposed project is linked to the existing Horizon Solar operating plant (EIA ID 65308). The Horizon Solar project has been the subject of recent news coverage, with 13 articles appearing in industry and deals publications.
Generated from interconnection queue and public data sources
State
TX
County
Frio
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Horizon Solar, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
5897 Horizon Switch 138kV
Data Source
LBNL
- ISO / RTO
- ERCOT
- Trading Hub
- HB_SOUTH
- Hub Confidence
- HIGH
- Nearest Node (Estimated)
- HRZN_SLR_UN1
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
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