PacifiCorp-TCS-48

PacifiCorp-TCS-48BetaActiveBatteryPacifiCorpLBNL

200 MW storage in Salt Lake, UT · In queue since October 2019 · Proposed COD December 2023

200 MW

Capacity

Components

Battery

6y 7m

In Queue

IA Executed

IA Status

COD target: 2023

Status

Latest milestoneone-year anniversary of restart announcement, ahead of schedule · 2025-09-23Business Wire · 2025-09-23

Expected COD2027Business Wire · 2025-09-23

Interconnection

Total Duration

4y 2m

Schedule

28 months past proposed COD

Construction75%

Queue EntryOct 11, 2019

Interconnection request submitted to ISO/RTO

Interconnection Study

Project undergoes interconnection studies to assess grid impact.

Typical: 18–36 months

Interconnection Agreement

Interconnection agreement executed — binding commitment to build

Typical: 30–60 days (negotiation)

ConstructionCurrent

Project under construction

Typical: 6–18 months

Commercial Operation

Proposed COD: 2023-12-31

About

PacifiCorp-TCS-48 is a proposed 200 MW battery storage project located in Salt Lake County, Utah. The project, developed by Dominguez Grid, LLC, is interconnected to the PacifiCorp system at the Terminal substation. It entered the PacifiCorp Transmission Customer Service queue on October 11, 2019, and has a proposed commercial operation date of December 31, 2023. The project's Interconnection Agreement (IA) has been executed.

The development has been covered in recent news, with three articles categorized as industry and regulatory news.

Generated from interconnection queue and public data sources

Project Details

State

County

Salt Lake

Grid Region

Mountain West

Market

—

Developer

Dominguez Grid, LLC

Utility

PacifiCorp

Entity

PacifiCorp

Service Type

—

Point of Interconnection

Terminal substation

Data Source

LBNL

DeveloperConstellationBusiness Wire · 2025-09-23

ApplicantNextEra Energy ResourcesSolar Magazine · 2025-08-10

CompanyNine Mile Point Nuclear StationSyracuse.com · 2022-09-28

AgencyUtah Inland Port AuthoritySolar Magazine · 2025-08-10

RulingApprovalSolar Magazine · 2025-08-10

Market Context

Approximate

ISO / RTO: MOUNTAIN_WEST
Trading Hub: FOURCORNERS
Hub Confidence: UNKNOWN

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 (3)Beta

Last updated 2026-03-14

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Project PacifiCorp-TCS-48 — Project Summary

PacifiCorp-TCS-48