Wärtsilä and Siempelkamp Giesserei form strategic partnership to secure the supply chain to support Wärtsilä’s continued growth

Technology group Wärtsilä strengthens its supply chain through strategic partnership with Siempelkamp Giesserei, a key supplier of large cast components for Wärtsilä engines. The partnership ensures that Wärtsilä has reliable access to high-quality large cast components in a growing market, mitigating supply chain constraints and supporting the company’s continued growth. As a result, Wärtsilä can support the growing demand for sustainable technologies in the marine and energy sectors. 

Wärtsilä and Siempelkamp Giesserei will jointly optimize the supply flow of large cast components, such as engine blocks. This collaboration allows Wärtsilä to grow its production volumes to support the strong market demand, based on a stable and reliable supply of key components. The large cast components play an integral part in enabling increased engine efficiency, greater adaptability to new fuels and lower emissions throughout the product lifecycle. 

The strategic partnership with Siempelkamp Giesserei reflects Wärtsilä’s commitment to working with suppliers that deliver reliability and uncompromising quality, utilise future-oriented production methods, and actively advance joint development and greenhouse gas reduction. Through such collaborations, Wärtsilä continues to respond to the evolving needs of its customers. 

“Siempelkamp Giesserei is one of the world’s leaders in hand-mold casting of large, complex components. The company has been a reliable partner to Wärtsilä for nearly four decades, consistently delivering on promises with punctuality and flexibility. Their zero-carbon castings contribute directly to our Set for 30 decarbonisation targets, helping us reduce direct suppliers’ greenhouse gas emissions and ultimately serve our customers even better,” says Jan Kåre Helgeland, Director, Supply Management at Wärtsilä. 

Siempelkamp Giesserei’s automated, digitalised foundry uses renewable power and advanced energy management systems, supporting Wärtsilä’s aim to reduce its suppliers’ emissions. Siempelkamp Giesserei’s efficient, low-carbon value chain allows Wärtsilä to launch new engine designs faster and reduce material waste. 

“We supply products that advance our commitment to supporting the green transition.  Our investments in green energy and zero-carbon casting technologies reflect our shared vision for a cleaner, more sustainable industry,” comments Dirk Howe, Managing Director of Siempelkamp Giesserei.

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Wärtsilä is a global leader in innovative technologies and lifecycle solutions for the marine and energy markets. We emphasise innovation in sustainable technology and services to help our customers continuously improve their environmental and economic performance. Our dedicated and passionate team of 18,300 professionals in more than 230 locations in 77 countries is shaping the decarbonisation of our industries across the globe. In 2024, Wärtsilä’s net sales totalled EUR 6.4 billion. Wärtsilä is listed on Nasdaq Helsinki.
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