Twelvemile Solar 3

A 200 MW utility solar project in Mayes County, Oklahoma. Twelvemile Solar 3 has work under way on site. Public records name Leeward Asset Management, LLC as its developer. A builder is on record; its name and the people to call are in the app.

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The record

What the public record says about Twelvemile Solar 3, as of 22 Oct 2026.

Stage	Under construction
Construction start	Q2 2025 estimate
Size	200 MW
Location	Mayes County, Oklahoma (to about 10 km)
Developer	Leeward Asset Management, LLC
Grid operator	—
Builder (EPC)	on record, in the app
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 developed by Leeward Asset Management, LLC

Project	Stage	Size
Elisabeth SolarUtility solar · Yuma County, Arizona	Under construction	350 MW
Hoosier Line SolarUtility solar · White County, Indiana	Under construction	180 MW
Blackford SolarUtility solar · Blackford County, Indiana	Under construction	150 MW
South Branch SolarUtility solar · Hancock County, Ohio	Pre-construction	205 MW
Honey Creek SolarUtility solar · White County, Indiana	Pre-construction	200 MW
Harvey SolarUtility solar · Licking County, Ohio	Permitted	350 MW

Every Leeward Asset Management, LLC project

Also in Mayes County

Project	Stage	Size
Unnamed 250 MW solar projectUtility solar	Financed	250 MW
Unnamed 102 MW storage projectBattery storage	Financed	102 MW
Unnamed 100 MW storage projectBattery storage	Financed	100 MW
Unnamed 100 MW solar projectUtility solar	Financed	100 MW
Unnamed 100 MW storage projectBattery storage	Financed	100 MW
Unnamed 72 MW storage projectBattery storage	Financed	72 MW

Every project in Mayes County

Utility solar in Oklahoma Every industry in Oklahoma How to tell a project is about to break ground

Questions

Twelvemile Solar 3, in short.

Where is Twelvemile Solar 3?

Twelvemile Solar 3 is a 200 MW utility solar project in Mayes County, Oklahoma. The public page places it to within about ten kilometres; the precise location is in the subscriber record.

When does construction start on Twelvemile Solar 3?

Groundtrace estimates construction started in the second quarter of 2025. 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 Twelvemile Solar 3?

Leeward Asset Management, LLC, as the public record names it.

Who is building Twelvemile Solar 3?

A builder is named for Twelvemile Solar 3 in the public record. Its name, the trade subcontractors and the people to call are in the subscriber record, each with the record that names it.