Flat Ridge 4

A 134 MW onshore wind project in Harper County, Kansas. Flat Ridge 4 is built and in service. Public records name Public Service Co of Oklahoma 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 Flat Ridge 4, as of 22 Oct 2026.

Stage	Operating
Construction start	In service since 2025
Size	134 MW
Location	Harper County, Kansas (to about 10 km)
Developer	Public Service Co of Oklahoma
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.

7 Mar 2024Entered the public record for the first time.

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

Also developed by Public Service Co of Oklahoma

Project	Stage	Size
Maverick Wind ProjectOnshore wind · Major County, Oklahoma	Operating	288 MW
Sundance Wind ProjectOnshore wind · Woods County, Oklahoma	Operating	199 MW
Pixley Solar EnergyUtility solar · Barber County, Kansas	Operating	189 MW
Rock Falls Wind FarmOnshore wind · Kay County, Oklahoma	Operating	154 MW
Flat Ridge 5Onshore wind · Harper County, Kansas	Operating	153 MW

Every Public Service Co of Oklahoma project

Also in Harper County

Project	Stage	Size
Unnamed 300 MW wind projectOnshore wind	Financed	300 MW
Unnamed 150 MW wind projectOnshore wind	Financed	150 MW
Unnamed 42 MW solar projectUtility solar	Financed	42 MW
Flat Ridge 5Onshore wind	Operating	153 MW

Onshore wind in Kansas Every industry in Kansas How to tell a project is about to break ground

Questions

Flat Ridge 4, in short.

Where is Flat Ridge 4?

Flat Ridge 4 is a 134 MW onshore wind project in Harper County, Kansas. The public page places it to within about ten kilometres; the precise location is in the subscriber record.

When does construction start on Flat Ridge 4?

Flat Ridge 4 is built and in service since 2025.

Who is developing Flat Ridge 4?

Public Service Co of Oklahoma, as the public record names it.

Who is building Flat Ridge 4?

A builder is named for Flat Ridge 4 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.