Tualatin Battery Energy Storage System

A 200 MW battery storage project in Washington County, Oregon. Tualatin Battery Energy Storage System has asked to connect to the grid or filed for its first approvals; nothing on record yet commits money to it. Public records name TUAL bn, LLC as its developer. No public record read so far names its builder.

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The record

What the public record says about Tualatin Battery Energy Storage System, as of 22 Oct 2026.

Stage	Queued
Construction start	Q4 2026 estimate
Size	200 MW
Location	Washington County, Oregon (to about 10 km)
Developer	TUAL bn, LLC
Grid operator	—
Builder (EPC)	Not named yet
Trade subcontractors	in the app
People to call	in the app
Phase windows	in the app

Every fact in the app links to the public record behind it, with how many records agree and whether it is confirmed, reported or an estimate. What the terms mean.

What happened

Each change dated by the scene or the document, newest first.

No change on record since Groundtrace started tracking it.

Who was named on it, and when, is in the app.

Also in Washington County

Project	Stage	Size
Constable BESSBattery storage	Operating	75 MW
Coffee Creek BESSBattery storage	Operating	17 MW
MilfordSolar ORUtility solar	Operating	3 MW
O'Neill Creek SolarUtility solar	Operating	2 MW

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Questions

Tualatin Battery Energy Storage System, in short.

Where is Tualatin Battery Energy Storage System?

Tualatin Battery Energy Storage System is a 200 MW battery storage project in Washington County, Oregon. The public page places it to within about ten kilometres; the precise location is in the subscriber record.

When does construction start on Tualatin Battery Energy Storage System?

Groundtrace estimates construction starts in the fourth quarter of 2026. This is an estimate from the project's filings, not a date any record states; the exact date and the record behind it are in the subscriber record.

Who is developing Tualatin Battery Energy Storage System?

TUAL bn, LLC, as the public record names it.

Who is building Tualatin Battery Energy Storage System?

No public record read so far names a builder for Tualatin Battery Energy Storage System. Groundtrace leaves the field empty rather than guess, and fills it when a permit, a filing or the builder's own page names one.