# Sumpter

MISO asset profile · https://askthegrid.com/assets/facilities/sumpter

## Current generation inventory

EIA plant 7972 · Inventory reporting month: 2026-08.

- natural gas: 340 MW operating nameplate
- Capacity basis: operating_generator_nameplate_mw
- Source inventory: [EIA-860M workbook (preliminary)](https://www.eia.gov/electricity/data/eia860m/xls/august_generator2026.xlsx)
- Inventory retrieved: 2026-10-10T02:12:40.665346+00:00
- Filed coordinate (longitude, latitude): -83.5318, 42.167
- OSM extract: 2026-10-08T20:21:06Z
- OSM mapped edit: 2023-02-13 04:19:59+00:00
- Map prepared: 2026-10-10T02:28:20.555526+00:00

Battery power (MW) and stored energy (MWh) are separate measures. Shared physical-site membership does not establish electrical connectivity, settlement or a common export limit.

## Reviewed overview

Sumpter is a 340 MW natural gas peaking plant in Sumpter, Michigan, in Wayne County. FirstEnergy Generation Corporation built it in 2002 with four 85-MW natural gas combustion turbines, and it was the company's only facility in Michigan. FirstEnergy announced the sale to Wolverine Power Supply Cooperative on December 17, 2009, and Wolverine closed the purchase as the plant's current owner.

## Reviewed metrics

- **Nameplate capacity:** 340 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 7972 — plant-7972

## Facts

- **Technology:** Natural Gas Fired Combustion Turbine
- **Operator:** Wolverine Power Supply Coop

## Related parties

- **Owner / acquirer:** Wolverine Power Supply Cooperative — owner ([source](https://www.wpsci.com))
- **Former owner / developer / seller:** FirstEnergy Generation Corporation — former_owner

## Sources

- [reliableplant.com](https://www.reliableplant.com/Read/23739/FirstEnergy-Michigan-power-plant) — reliableplant.com · public_source — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/sumpter
Website: [Wolverine Power Supply Cooperative](https://www.wpsci.com)

Source: Ask the Grid — https://askthegrid.com/