Wärtsilä completes divestment of water and waste, and gas solutions units

In two separate transactions completed on 1 June, Finnish marine technology group Wärtsilä completed the divestment of its water and waste management unit and Gas Solutions business. Both businesses were part of Wärtsilä’s Portfolio Business, which was established in early 2020 to facilitate their sale.

On 22 December 2025, Wärtsilä agreed to divest its Gas Solutions business to the German private equity investor Mutares SE & Co. KGaA. Gas Solutions is recognised as a market leader, offering innovative systems and comprehensive lifecycle solutions for the gas value chain. Its core expertise includes handling of gas in maritime transport, inert gas systems, enabling gas-to-power, and delivering liquefaction and biogas solutions. Revenues for the business were €394M (US$458M) in 2025.

An agreement for the sale of the Water & Waste business to Solix Group AB was announced on 5 February 2026. Water & Waste offers a wide portfolio of environmental solutions for the full spectrum of water and waste management at sea. From ballast water treatment to efficient wastewater systems, the technologies offered by Water & Waste contribute to operational efficiency, compliance, and enhanced environmental performance across the vessel’s lifecycle. Annual revenue for the Waste & Water business was €54M (US$63M) in 2025.

Wärtsilä president and chief executive, Håkan Agnevall said with the sale of the last two units in its Portfolio Business, the company has “successfully executed on our strategy to accelerate performance improvements and unlock value to Wärtsilä through divestments. As a result of these divestments, Wärtsilä is becoming a more focused and profitable company.”