# McClain Energy Facility

SPP asset profile · https://askthegrid.com/assets/facilities/mcclain-energy-facility

## Current generation inventory

EIA plant 55457 · Inventory reporting month: 2026-08.

- natural gas: 551.3 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): -97.58985, 35.29774
- OSM extract: 2026-10-08T20:21:06Z
- OSM mapped edit: 2023-03-12 04:05:02+00:00
- Map prepared: 2026-10-10T02:28:21.625820+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

McClain Energy Facility is a 551.3 MW natural gas fired combined cycle plant in McClain County. McClain is a 520 MW combined-cycle natural gas plant near Newcastle in McClain County, Oklahoma, in commercial operation since 2001. Oklahoma Gas & Electric is the majority owner and operator, and the Oklahoma Municipal Power Authority holds a 23 percent share.

## Reviewed metrics

- **Nameplate capacity:** 551.3 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 55457 — plant-55457

## Facts

- **Technology:** Natural Gas Fired Combined Cycle
- **Operator:** Oklahoma Gas & Electric

## Related parties

- **Owner / offtaker:** Oklahoma Municipal Power Authority — co-owner ([source](https://www.ompa.com))

## Sources

- [ompa.com](https://www.ompa.com/senator-scott-tours-the-mcclain-plant/) — ompa.com · public_source — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/mcclain-energy-facility
Website: [Oklahoma Gas & Electric](https://www.oge.com)

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