Samson Solar 3 (ERCOT-21INR0491) — Project Summary

Queue ID
ERCOT-21INR0491
Capacity
250 MW
Technology
Solar
Status
active
Location
Lamar, TX
Region
ERCOT
Developer
Samson Solar Energy III LLC
IA Status
IA Executed

Samson Solar 3

ERCOT-21INR0491BetaActiveSolarERCOTLBNL + Live

250 MW generation in Lamar, TX · In queue since January 2020 · Proposed COD June 2026

BA: ERCOISO/RTO: ERCOTNERC: TRERC: ERCOT

250 MW

Capacity

1

Components

Solar

6y 6m

In Queue

IA Executed

IA Phase

Signed Aug 2020

Interconnection

Queue → IA

7 months

IA → COD

5y 10m

Total Duration

7 months

Schedule

0 months past proposed COD

Construction75%
Queue EntryJan 13, 2020

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 AgreementAug 27, 2020

Interconnection agreement executed — binding commitment to build

Typical: 30–60 days (negotiation)

ConstructionCurrent

Project under construction

Typical: 12–24 months

Commercial Operation

Proposed COD: 2026-06-30

Cross-source intelligence
Beta
High confidence·6 sources·as of 2026-06-01
Expected COD
2026-06-30
From queue filing
Developer
Invenergy
Filed as Samson Solar Energy III LLC
Status
Active
Active — IA executed Aug 2020, construction underway as part of larger Samson complex, on track for mid-2026 COD
Financing
Secured
WEC Energy Group acquired 80% ownership stake in Dec 2025 (amount undisclosed), indicating financing secured for construction phase
Ownership history
  1. 2025-12·Invenergy (100%)WEC Energy Group (80%) / Invenergy (20%)source
Key milestones
IA executedAug 27, 2020

Interconnection Agreement executed with ERCOT

source
Ownership changeDec 2025

WEC Energy Group acquired 80% ownership interest from Invenergy

source
COD targetJun 2026Most recent

Targeted commercial operation date per Texas PUC and LBNL queue

source
About

Samson Solar 3 is a proposed solar generation project with a total capacity of 250 MW, located in Lamar County, Texas. The developer is Samson Solar Energy III LLC. The project is actively listed in the ERCOT interconnection queue as entry ERCOT-21INR0491, with a queue entry date of January 13, 2020, and a proposed commercial operation date of June 30, 2026.

The project's interconnection agreement (IA) has been executed as of August 27, 2020. The point of interconnection (POI) is at the tap of both 345kV 1685 FarmersVl - 1695 Moses ckts. The project has appeared in recent news.

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

Lamar

Grid Region

ERCOT (Texas)

Market

ISO/RTO Member

Developer

Samson Solar Energy III LLC

Utility

Entity

ERCOT

Service Type

Point of Interconnection

tap both 345kV 1685 FarmersVl - 1695 Moses ckts

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.

No insights available for this project.
InfraSure platform

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