Wärtsilä's long-term maintenance agreement ensures optimisation and operational efficiency for U.S. power plant

Wärtsilä Corporation, Press release, 14 July 2026 at 15:00 EEST

Technology group Wärtsilä has signed a ten-year optimised maintenance agreement with Midwest Energy, a customer-owned cooperative, located in Hays, Kansas, United States. The agreement covers the 104 MW Goodman Energy Center, located in Ellis County, operating with natural-gas fuelled Wärtsilä 34SG engines. The plant primarily serves as a flexible balancing power plant, responding to fluctuations in load and non-dispatchable generation, to support the regional power grid. The agreement order was booked by Wärtsilä in Q2 2026.

“Maintaining operational efficiency is critical to our ability to provide reliable power to our customers in the Southwest Power Pool (SPP),” says Aaron Rome, Vice President of Energy Supply, Midwest Energy. “The Goodman facility utilizes Wärtsilä engines as the prime mover, so it makes sense to have the OEM provider plan, supervise, and support all required major maintenance activities associated with those engines.”

Under the terms of the agreement, Wärtsilä will provide field services, spare parts, remote support, control system patching, and assist with maintenance planning. Also included is Expert Insight, Wärtsilä’s unique digital predictive maintenance product that enables customer support to be delivered proactively by Wärtsilä Expertise Centres.

“Wärtsilä’s long-term service agreements are designed to deliver tangible benefits to the customer. They help facilities maintain operational efficiency, ensuring reliable power for communities and businesses. As a key element of Wärtsilä’s Lifecycle services, these agreements also support improved asset performance, reduced operational risk and greater long-term predictability,” comments Kees de Grijs, General Manager, Business Development, Agreements and Upgrades, North America at Wärtsilä Energy. “The support we provide encompasses the company’s technology, software, service expertise, and our thorough understanding of installations on a system level. This enables customers to take a more proactive approach to operations, optimise maintenance planning, and make informed decisions across the asset lifecycle.”

Midwest Energy is a customer-owned electric and natural gas cooperative, serving 92,000 electric and natural gas customers in 40 counties in central and western Kansas.

Media contact for more information on this release:

Ninni Koivunen
Marketing & Communications
Wärtsilä Energy
ninni.koivunen@wartsila.com

Katri Pehkonen
Communications Manager
Wärtsilä Energy
Mob: +358 50 591 6180
katri.pehkonen@wartsila.com

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Wärtsilä Energy in brief
Wärtsilä Energy is at the forefront of the transition towards a 100% renewable energy future. We help our customers and the power sector to accelerate their decarbonisation journeys through our market-leading technologies and power system expertise. Our solutions include flexible engine power plants, energy storage and optimisation technology, and services for the whole lifecycle of our installations. Our engines are future-proof and can run on sustainable fuels. Our track record comprises 81 GW of power plant capacity and over 130 energy storage installations in 180 countries around the world. About 35% of our operating installed base is under service agreements.
www.wartsila.com/energy

Wärtsilä in brief
Wärtsilä is a global leader in innovative technologies and lifecycle solutions for the marine and energy industries. We emphasise innovation in sustainable technology and services to help our customers continuously improve environmental and economic performance. Our dedicated and passionate team of 17,900 professionals in 199 locations in 78 countries shape the decarbonisation transformation of our industries across the globe. In 2025, Wärtsilä’s net sales totalled EUR 6.9 billion. Wärtsilä is listed on Nasdaq Helsinki.
www.wartsila.com