# Wärtsilä to supply 99.6 MW dual-fuel engines for Black Hills Energy power plant

Wärtsilä will supply six dual-fuel engines with a total output of 99.6 MW for a power plant in Rapid City, South Dakota, owned by Black Hills Energy. The order was booked in Q4 2024, with commercial operations expected by Q3/Q4 2026.

- Type: Contract
- Announced: 2025-08-21
- Where: Rapid City, South Dakota, United States
- Status: announced
- Capacity: 99.6 MW
- Products: dual-fuel engines, reciprocating internal combustion engines
- Sectors: [Power Generation Equipment](https://endata.com/sectors/power-generation-equipment.md)

## Companies

- [Wärtsilä](https://endata.com/companies/254.md)
- [Wärtsilä](https://endata.com/companies/254.md) (supplier)
- [Samsung Heavy Industries](https://endata.com/companies/1440.md) (customer)
- [Nebraska Public Power District](https://endata.com/companies/13419.md) (customer)
- [Black Hills Energy](https://endata.com/companies/86779.md) (customer)
- [East Kentucky Power Cooperative](https://endata.com/companies/86851.md) (customer)
- [Delfin LNG](https://endata.com/companies/87571.md) (customer)

## Sources

- [wartsila.com](https://www.wartsila.com/media/news/21-08-2025-wartsila-s-flexible-engine-technology-to-power-up-rapid-city-s-grid-3710189), 2025-08-21: "Wärtsilä’s reputation in the reciprocating technology market made them the right choice for Black Hills Energy."
- [wartsila.com](https://www.wartsila.com/media/news/26-08-2025-217-mw-wartsila-dual-fuel-power-plant-to-deliver-reliable-power-for-kentucky-residents-3646574), 2025-08-26: "We are delighted to support EKPC's energy initiative."
- [marketscreener.com](https://www.marketscreener.com/news/wartsila-to-supply-engines-for-new-power-plant-in-the-united-states-ce7c50dfde81f626), 2025-08-28: "Wärtsilä has been contracted to deliver engines for a new power facility in Hallam, Nebraska, USA."
- [globalenergyworld.com](https://www.globalenergyworld.com/news/traditional-energy/2025/08/28/wartsila-engines-selected-new-217-mw-nebraska-power-plant), 2025-08-28: "This project emphasises the importance of flexible engine power plant solutions in the energy system, providing reliable power supply and operations when needed."
- [datacenterknowledge.com](https://www.datacenterknowledge.com/energy-power-supply/powering-the-digital-surge-why-rice-engines-are-the-smart-choice-for-data-centers), 2025-09-15: "Wärtsilä’s recent contract to deliver 282 MW of onsite power for a new data center isn’t just a big project, it’s a signal."
- [pgjonline.com](https://www.pgjonline.com/news/2026/november/waertsilae-to-supply-dual-fuel-engines-thrusters-for-delfins-first-flng-vessel-off-louisiana), 2025-10-01: "Being able to disconnect in case of a hurricane warning and sail to a safe location is essential for an FLNG Vessel off the coast of Louisiana."

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.