Cottonwood Bayou Solar
351.4 MW generation in Brazoria, TX · In queue since September 2017 · Proposed COD May 2026
351.4 MW
Capacity
1
Components
Solar
8y 10m
In Queue
IA Executed
IA Phase
Signed Nov 2019
Queue → IA
2y 2m
IA → COD
6y 6m
Total Duration
2y 2m
Schedule
1 months past proposed COD
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)
Project under construction
Typical: 12–24 months
Proposed COD: 2026-05-29
TotalEnergies signed CPPA with LyondellBasell for 358MW combined capacity from Cottonwood and another TX solar site
sourceSukut Construction installed 158,000 steel piles and 10,000 racking rows for 350 MWac solar farm
sourceProject reported as operating by Global Energy Monitor as of Feb 2026
sourceCottonwood Bayou Solar is a proposed solar generation project with a total capacity of 351.4 MW, located in Brazoria County, Texas. The developer is Cottonwood Bayou Solar, LLC. The project is in the ERCOT interconnection queue as entry ERCOT-19INR0134, with a queue entry date of September 22, 2017, and a proposed commercial operation date of May 29, 2026. The Interconnection Agreement (IA) was executed on November 13, 2019. The point of interconnection is tap 138kV 42870 Liverpool - 43070 Petson.
The proposed project is linked to the existing Cottonwood Bayou Solar operating plant (EIA plant ID 66915). The project has been the subject of recent news coverage.
Generated from interconnection queue and public data sources
Realization risk from now to commercial operation — financing close, EPC and tax-equity counterparty mix, and COD probability vs the proposed date. The diligence view that determines whether the deal actually closes. Powered by InfraSure's development-stage modeling stack.
See the full development-risk decomposition for this project.
State
TX
County
Brazoria
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Cottonwood Bayou Solar, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
tap 138kV 42870 Liverpool - 43070 Petson
Data Source
LBNL + Live
Composite operating-phase risk view — what this asset's risk profile will look like once it commissions. Climate hazards across its operating life, expected generation variability, and offtake counterparty exposure, decomposed into a single decision-grade score. Powered by InfraRisk.
See the full risk decomposition + scenarios for this project.
Forward generation outlook — first-year production estimate and 10-year P50 trajectory, with probabilistic ranges (P10/P50/P90) across weather, demand, and policy scenarios. Powered by InfraSure's generation modeling stack.
See the full forecast + scenario decomposition for this project.
Forward revenue, DSCR projection, and financing-close risk — conditioned on commercial operation. First-year DSCR, 10-year cashflow, and counterparty exposure across price and policy scenarios. Powered by InfraSure's asset cashflow stack.
See the full revenue + DSCR projection for this project.
- ISO / RTO
- ERCOT
- Trading Hub
- HB_HOUSTON
- Hub Confidence
- HIGH
- Nearest Node (Estimated)
- CTW_RN
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.
Forward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
