# Astoria Station

MISO asset profile · https://askthegrid.com/assets/facilities/astoria-station

## Current generation inventory

EIA plant 61144 · Inventory reporting month: 2026-08.

- natural gas: 349 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): -96.55942, 44.574965
- OSM extract: 2026-10-08T20:21:06Z
- OSM mapped edit: 2023-03-12 04:40:46+00:00
- Map prepared: 2026-10-10T02:28:23.210467+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

Astoria Station is a 245 MW simple-cycle natural gas combustion turbine in Deuel County, South Dakota, owned by Otter Tail Power Company. After two years of construction and testing it began producing energy in May 2021 and is economically dispatched by MISO. Built to replace expiring capacity purchase agreements and prepare for the Hoot Lake coal plant's retirement, it ramps up quickly as a backstop for wind and solar, with gas delivered by Northern Border Pipeline.

## Reviewed metrics

- **Nameplate capacity:** 349 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 61144 — plant-61144

## Facts

- **Technology:** Natural Gas Fired Combustion Turbine
- **Operator:** Otter Tail Power Company

## Related parties

- **Owner / operator:** Otter Tail Power Company — owner ([source](https://www.otpco.com))
- **Market participant / balancing authority:** Midcontinent Independent System Operator — market operator ([source](https://www.misoenergy.org))
- **Fuel supplier:** Northern Border Pipeline — fuel supplier

## Sources

- [otpco.com](https://www.otpco.com/AstoriaStation) — otpco.com · public_source — Source retained for exact-record publication review.
- [otpco.com](https://www.otpco.com/newsroom/posts/weve-completed-astoria-station/) — otpco.com · public_source — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/astoria-station
Website: [Otter Tail Power Company](https://www.otpco.com)

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