Sierra Madre Solar
255.15 MW generation in Zapata, TX · In queue since January 2020 · Proposed COD December 2027
255.15 MW
Capacity
1
Components
Solar
6y 4m
In Queue
Facility Study
IA Status
COD target: 2027
Total Duration
7y 11m
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: 2027-12-01
Sierra Madre Solar is a proposed 255.15 MW solar generation project located in Zapata County, Texas. Developed by Sierra Madre Solar LLC, the project entered the ERCOT interconnection queue as ERCOT-23INR0006 on January 22, 2020. The proposed commercial operation date is December 1, 2027, and the project's interconnection status is currently in the Facility Study phase. The point of interconnection is on the tap 345kV 80307 Del Sol - 80225 Cenizo line.
The Sierra Madre Solar project has been the subject of recent news coverage, with 12 articles categorized as regulatory, industry, deals, and grid-related.
Generated from interconnection queue and public data sources
State
TX
County
Zapata
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Sierra Madre Solar LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
tap 345kV 80307 Del Sol - 80225 Cenizo
Data Source
LBNL + Live
- ISO / RTO
- ERCOT
- Trading Hub
- HB_WEST
- Hub Confidence
- MEDIUM
- POI Substation
- Mesa del Sol 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.
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