St1 Suomi Oy has merged its subsidiary Lämpöpuisto Oy

St1 Suomi Oy has completed the merger of its subsidiary Lämpöpuisto Oy into the parent company. The merger took effect on 31 December 2025, and Lämpöpuisto Oy has ceased to exist as a separate entity. 

The merger is part of St1’s strategy to clarify and streamline its group structure. The arrangement strengthens St1’s service capabilities, harmonizes processes, and supports closer cooperation with customers and other stakeholders. Lämpöpuisto has been a wholly owned subsidiary of St1 since 2016. 

As a result of the merger, all operations, responsibilities, and rights of Lämpöpuisto Oy have been transferred to St1 Suomi Oy.