Mystic Springs Renewable Energy Solar SLF (ERCOT-24INR0339) — Project Summary

Queue ID
ERCOT-24INR0339
Capacity
258.83 MW
Technology
Solar+Battery
Status
active
Location
Kaufman, TX
Region
ERCOT
Developer
Mystic Spring Renewable Energy LLC
IA Status
IA Executed

Mystic Springs Renewable Energy Solar SLF

ERCOT-24INR0339BetaActiveSolarBatteryERCOTLBNL + Live

258.83 MW hybrid in Kaufman, TX · In queue since May 2022 · Proposed COD March 2028

BA: ERCOISO/RTO: ERCOTNERC: TRERC: ERCOT

258.83 MW

Capacity

1

Components

Solar

4y 2m

In Queue

IA Executed

IA Phase

Signed Oct 2025

Interconnection

Queue → IA

3y 5m

IA → COD

2y 5m

Total Duration

3y 5m

Construction75%
Queue EntryMay 10, 2022

Interconnection request submitted to ISO/RTO

Interconnection Study

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

Typical: 18–30 months (fastest major ISO)

Interconnection AgreementOct 30, 2025

Interconnection agreement executed — binding commitment to build

Typical: 30–60 days (negotiation)

ConstructionCurrent

Project under construction

Typical: 18–30 months

Commercial Operation

Proposed COD: 2028-03-31

Cross-source intelligence
Beta
Medium confidence·4 sources·as of 2026-06-01
Expected COD
2028-03-31
From queue filing
Developer
Mystic Spring Renewable Energy LLC
From queue filing
Status
Active
Active — IA executed October 2025, construction timeline targeting 2028 COD
Financing
Unannounced
Key milestones
IA executedOct 30, 2025

Standard Generation Interconnection Agreement filed with Texas PUC for Mystic Springs Renewable Energy Solar SLF

source
COD targetMar 31, 2028Most recent

ERCOT capacity charts show 258.83 MW solar project targeting 2028 commercial operation

source
About

Mystic Springs Renewable Energy Solar SLF is a proposed solar generation project located in Kaufman County, Texas, with a total capacity of 258.83 MW. The developer is Tawakoni Park Solar LLC. The project is currently active in the ERCOT interconnection queue as entry ERCOT-24INR0339, with a queue entry date of May 10, 2022. The proposed commercial operation date is March 31, 2028, and the project's interconnection agreement status is currently in the Facility Study phase.

The point of interconnection is Tap 345 kV Royse Switch (2478) _x0013_ Poetry Switch (2485).

Generated from interconnection queue and public data sources

Development Risk

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.

Available on the InfraSure platform

See the full development-risk decomposition for this project.

P(COD by stated date)
Financing close probability
EPC + tax-equity counterparty
Project Details

State

TX

County

Kaufman

Grid Region

ERCOT (Texas)

Market

ISO/RTO Member

Developer

Mystic Spring Renewable Energy LLC

Utility

Entity

ERCOT

Service Type

Point of Interconnection

Tap 345 kV Royse Switch (2478) – Poetry Switch (2485)

Data Source

LBNL + Live

Risk Analytics

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.

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 — 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.

Available on the InfraSure platform

See the full forecast + scenario decomposition for this project.

10-year P50 forecast
First-year output estimate
Weather + policy scenarios
Financial Forecast

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.

Available on the InfraSure platform

See the full revenue + DSCR projection for this project.

10-year revenue projection
First-year DSCR
Financing close risk
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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Forward forecasts, scenario decomposition, and risk-decision tooling for this queue project.