Arroyo Solar

ERCOT-20INR0086BetaActiveSolarERCOTLBNL + Live

100 MW generation in Cameron, TX · In queue since May 2018 · Proposed COD February 2028

100 MW

Capacity

Components

Solar

8 years

In Queue

IA Executed

IA Status

Signed Sep 2021

Status

as of 3y 8m ago

Latest milestoneTesla Megapack batteries delivered and being installedTeslarati · 2022-09-23

Interconnection

Queue → IA

3y 4m

IA → COD

6y 5m

Total Duration

3y 4m

Construction75%

Queue EntryMay 9, 2018

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 AgreementSep 28, 2021

Interconnection agreement executed — binding commitment to build

Typical: 30–60 days (negotiation)

ConstructionCurrent

Project under construction

Typical: 12–24 months

Commercial Operation

Proposed COD: 2028-02-22

About

Arroyo Solar is a proposed 100 MW solar generation project located in Cameron County, Texas. Developed by BT Cantwell Solar, LLC, the project consists of 100 MW of solar photovoltaic generation. It is listed in the ERCOT interconnection queue as entry ERCOT-20INR0086, with a queue entry date of May 9, 2018, and a proposed commercial operation date of February 22, 2028.

The project's Interconnection Agreement (IA) was executed on September 28, 2021. Arroyo Solar has been the subject of recent news coverage, with nine articles appearing in industry, deals, and development publications.

Generated from interconnection queue and public data sources

ERCOT Queue

Project Details

State

County

Cameron

Grid Region

ERCOT (Texas)

Market

ISO/RTO Member

Developer

BT Cantwell Solar, LLC

Utility

—

Entity

ERCOT

Service Type

—

Point of Interconnection

345 KV Tap #8318 Rio Hondo - #8317 La Palma

Data Source

LBNL + Live

DeveloperDE Shaw Renewable Investments±Teslarati · 2022-09-23

TransactionAcquisitionEnergy-Storage.News · 2021-09-21

OfftakerDE Shaw Renewable InvestmentsEnergy-Storage.News · 2021-09-21

LenderNord/LBEnergy-Storage.News · 2021-09-21

PPA structurePhysicalEnergy-Storage.News · 2021-09-21

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.

News & Articles (2)Beta

Last updated 2026-03-26

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Arroyo Solar (ERCOT-20INR0086) — Project Summary

Arroyo Solar