Cuchillas BESS (ERCOT-27INR0077) — Project Summary

Queue ID
ERCOT-27INR0077
Capacity
306.94 MW
Technology
Solar+Battery
Status
active
Location
Webb, TX
Region
ERCOT
Developer
Gransolar Texas Two
IA Status
Facility Study

Cuchillas BESS

ERCOT-27INR0077BetaActiveBatteryBatteryERCOTLBNL + Live

306.94 MW generation in Webb, TX · In queue since September 2023 · Proposed COD December 2028

BA: ERCOISO/RTO: ERCOTNERC: TRERC: ERCOT

306.94 MW

Capacity

1

Components

Battery

2y 10m

In Queue

Facility Study

IA Phase

COD target: 2028

Interconnection

Total Duration

5y 3m

Facilities Study50%
Queue EntrySep 26, 2023

Interconnection request submitted to ISO/RTO

Interconnection StudyCurrent

ERCOT uses a serial "connect and manage" approach — fastest among major ISOs.

Typical: 18–30 months (fastest major ISO)

Interconnection Agreement

Interconnection agreement not yet executed

Typical: 30–60 days (negotiation)

Commercial Operation

Proposed COD: 2028-12-15

Cross-source intelligence
Beta
Low confidence·4 sources·as of 2026-06-01
Expected COD
2028-12-15
From queue filing
Developer
Gransolar
Filed as Gransolar Texas Two LLC
Status
Active
Active — early interconnection phase (Facility Study), no IA executed. Webb County tax abatement agreement executed August 2024.
Financing
Unannounced
Key milestones
Permit approvedAug 2024Most recent

Webb County tax abatement agreement executed for Cuchillas BESS project

source
About

The Cuchillas BESS project is a proposed 306.94 MW battery storage project located in Webb County, Texas. Developed by Gransolar Texas Two, the project is currently active in the ERCOT interconnection queue as entry ERCOT-27INR0077, with a queue entry date of September 26, 2023.

The proposed commercial operation date for the Cuchillas BESS project is December 15, 2028. Its interconnection status is currently in the Facility Study phase, and the point of interconnection is the 80219 Lobo 345kV location. The project has appeared in recent news.

Generated from interconnection queue and public data sources

Development Risk

Realization risk before commercial operation — cluster-study clearance, IA timing, counterparty mix, and withdrawal probability vs cohort. The diligence view that determines whether this project is worth pursuing. Powered by InfraSure's development-stage modeling stack.

Available on the InfraSure platform

See the full development-risk decomposition for this project.

P(COD by stated date)
Withdrawal probability vs cohort
IA cluster risk
Project Details

State

TX

County

Webb

Grid Region

ERCOT (Texas)

Market

ISO/RTO Member

Developer

Gransolar Texas Two

Utility

Entity

ERCOT

Service Type

Point of Interconnection

80219 Lobo 345kV

Data Source

LBNL + Live

Risk Analytics

Composite operating-phase risk view — what this asset's risk profile would look like once it reaches commercial operation. Climate hazards across its operating life, expected generation variability, and offtake counterparty exposure, decomposed into a single decision-grade score. Powered by InfraRisk.

Available on the InfraSure platform

See the full risk decomposition + scenarios for this project.

Climate hazards (8+)
Generation variability (P10/P50/P90)
Offtake + transmission counterparty
Generation Forecast

Forward generation outlook — what this project would produce assuming it reaches commercial operation. Probabilistic ranges (P10/P50/P90) across weather, demand, and policy scenarios, conditioned on the proposed COD. Powered by InfraSure's generation modeling stack.

Available on the InfraSure platform

See the full forecast + scenario decomposition for this project.

P50 conditioned on COD
Capacity factor vs cohort
Weather + policy scenarios
Financial Forecast

Forward revenue, DSCR projection, and financing-close risk — conditioned on commercial operation. The bankability view that determines whether the deal clears its covenants once online. Powered by InfraSure's asset cashflow stack.

Available on the InfraSure platform

See the full revenue + DSCR projection for this project.

Revenue conditioned on COD
Financing close risk
Cohort DSCR comparison
Market Context
Approximate
ISO / RTO
ERCOT
Trading Hub
HB_SOUTH
Hub Confidence
MEDIUM
Nearest Node (Estimated)
WFTANK_ESS1
POI Substation
Lobo 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.

No insights available for this project.
InfraSure platform

Forward forecasts, scenario decomposition, and risk-decision tooling for this queue project.