Firefly Fields Solar (ERCOT-29INR0085) — Project Summary

Queue ID
ERCOT-29INR0085
Capacity
100.52 MW
Technology
Solar+Battery
Status
active
Location
Colorado, TX
Region
ERCOT
Developer
Firefly Fields Energy Center LLC
IA Status
Facility Study

Firefly Fields Solar

ERCOT-29INR0085BetaActiveSolarBatteryERCOTLBNL + Live

100.52 MW hybrid in Colorado, TX · In queue since January 2025 · Proposed COD September 2028

BA: ERCOISO/RTO: ERCOTNERC: TRERC: ERCOT

100.52 MW

Capacity

1

Components

Solar

1y 6m

In Queue

Facility Study

IA Phase

COD target: 2028

Interconnection

Total Duration

3y 8m

Facilities Study50%
Queue EntryJan 13, 2025

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: 2028-09-30

Cross-source intelligence
Beta
Low confidence·0 sources·as of 2026-06-01
Expected COD
2028-09-30
From queue filing
Developer
Firefly Fields Energy Center LLC
From queue filing
Status
Active
Active — Facility Study phase, queue entry January 2025
Financing
Unannounced
Key milestones
IA executedJan 2025Most recent

Entered ERCOT queue in Facility Study phase

About

Firefly Fields Solar is a proposed 100.52 MW solar photovoltaic generation project located in Colorado County, Texas. The project, being developed by Firefly Fields Energy Center LLC, is currently active in the ERCOT interconnection queue as entry ERCOT-29INR0085, with a queue entry date of January 13, 2025. The proposed commercial operation date is September 30, 2028. The point of interconnection is Tap 138 kV <57640> <Rock Island> - <7258> <Glidden>.

The Firefly Fields Solar project has been mentioned in recent news coverage related to regulatory matters.

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

Colorado

Grid Region

ERCOT (Texas)

Market

ISO/RTO Member

Developer

Firefly Fields Energy Center LLC

Utility

Entity

ERCOT

Service Type

Point of Interconnection

Tap 138 kV <57640> <Rock Island> - <7258> <Glidden>

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_NORTH
Hub Confidence
LOW

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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InfraSure platform

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