# Oahe

SPP asset profile · https://askthegrid.com/assets/facilities/oahe

## Current generation inventory

EIA plant 3356 · Inventory reporting month: 2026-08.

- hydroelectric: 786.0999999999999 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: 2026-10-10T22:49:53.020309+00:00
- Filed coordinate (longitude, latitude): -100.3866, 44.4504
- OSM extract: 2026-10-09T20:21:04Z
- OSM mapped edit: 2022-05-13 18:04:16+00:00
- Map prepared: 2026-10-10T23:05:21.467063+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

Oahe is a seven-unit, 786 MW federal hydroelectric plant at Oahe Dam on the Missouri River near Pierre, South Dakota. The Army Corps of Engineers says it owns and operates the dam and lists seven upgraded Francis units and 2.641 TWh of average annual generation.

## Reviewed metrics

- **Nameplate capacity:** 786.0999999999999 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 3356 — plant-3356

## Facts

- **Technology:** Conventional Hydroelectric
- **Operator:** Oahe

## Sources

- [interxdata.com](https://interxdata.com/projects/oahe-eia-860-3356-3/) — interxdata.com · public_source — Source retained for exact-record publication review.
- [water.usace.army.mil](https://water.usace.army.mil/cda/documents/wc/2508/OaheDamWCM_Final_Dec2018_Redacted.pdf) — water.usace.army.mil · public_source — Source retained for exact-record publication review.
- [nwo.usace.army.mil](https://www.nwo.usace.army.mil/Media/Fact-Sheets/Fact-Sheet-Article-View/Article/487631/oahe-project-statistics/) — nwo.usace.army.mil · public_source — Source retained for exact-record publication review.
- [nwo.usace.army.mil](https://www.nwo.usace.army.mil/Missions/Dam-and-Lake-Projects/Missouri-River-Dams/Oahe/Hydropower/) — nwo.usace.army.mil · public_source — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/oahe
Website: [Oahe](https://www.nwo.usace.army.mil/Missions/Dam-and-Lake-Projects/Missouri-River-Dams/Oahe/)

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