# Cass County

SPP asset profile · https://askthegrid.com/assets/facilities/cass-county

## Current generation inventory

EIA plant 55972 · Inventory reporting month: 2026-08.

- natural gas: 345 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): -95.96403, 40.947913
- OSM extract: 2026-10-08T20:21:06Z
- OSM mapped edit: 2023-12-14 00:16:32+00:00
- Map prepared: 2026-10-10T02:28:23.097838+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

Cass County Station is an Omaha Public Power District natural gas peaking facility in Plattsmouth, Nebraska, with two existing simple-cycle combustion turbines and 323.8 MW of capacity listed by OPPD. A 2025 Nebraska air construction permit covers modifying those turbines and building three new ones. OPPD has partnered with Kiewit to add the new units and convert two existing units to dual fuel, and the expansion was 43% complete in August 2026.

## Reviewed metrics

- **Nameplate capacity:** 345 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 55972 — plant-55972

## Facts

- **Technology:** Natural Gas Fired Combustion Turbine
- **Operator:** Omaha Public Power District
- **Operating status:** Operating

## Related parties

- **Owner / operator:** Omaha Public Power District — owner ([source](https://oppd.com))
- **EPC contractor / construction contractor:** Kiewit Corporation — epc_contractor ([source](https://www.kiewit.com))
- **Equipment supplier:** Siemens Energy — equipment_supplier ([source](https://www.siemens-energy.com))

## Sources

- [dwee.nebraska.gov](https://dwee.nebraska.gov/news-events/public-notices/omaha-public-power-district-cass-county-station) — dwee.nebraska.gov · authoritative — Source retained for exact-record publication review.
- [oppd.com](https://oppd.com/news-resources/news-releases/2026/august/oppd-shares-progress-on-generation-transmission-buildouts-to-meet-growing-energy-demand/) — oppd.com · public_source — Source retained for exact-record publication review.
- [oppdthewire.com](https://oppdthewire.com/oppd-partners-with-omaha-firm-to-add-new-natural-gas-generation/) — oppdthewire.com · public_source — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/cass-county
Website: [Omaha Public Power District](https://oppd.com)

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