Samarbeid om tretransformatorstasjon

Omexom and E.ON are collaborating on Sweden’s first transformer station primarily constructed from wood, located in Karlshammar within Mönsterås municipality. The SEK 81 million investment replaces a 1960s substation that lacked sufficient capacity and was situated close to the Emån River and residential areas, improving both environmental and logistical challenges. This project aims to demonstrate that sustainable materials and smart resource use can coexist with high reliability and long service life in energy infrastructure.

Innovativt trebygg for utstyr

The new facility will feature a 50 kV switchgear with two incoming lines, a busbar, and two transformers reducing voltage to 10 kV for local distribution. The wooden building measures approximately 30 by 40 meters and stands 9 meters tall, fully enclosing the switchgear and complying with all fire and safety standards. Innovative engineering solutions, including new wall penetrations and extensive coordination among contractors, were necessary to achieve the wooden enclosure design, which distinguishes it from typical partially open installations.

17% lavere karbonavtrykk

Sustainability is central to the project, which reduces the station’s carbon footprint by about 17% compared to traditional concrete construction. The design eliminates SF₆ gas, a highly potent greenhouse gas, and uses climate-improved concrete, carbon-reduced steel, reclaimed oil, and numerous reused components like steel structures, busbars, aluminum pipes, and concrete channels sourced from other E.ON facilities. Waste heat recovery from transformers heats the switchyard, further enhancing energy efficiency.

Miljøvennlig bygging og materialer

Construction practices also emphasize environmental responsibility, with earthworks adapted to natural terrain to minimize disturbance, machinery powered by hydrogenated vegetable oil (HVO 100), and local rock used in construction. Notably, around 40,000 beech wood nails replace steel fasteners in the wooden facade, showcasing a collaborative and innovative approach to sustainability. These circular and climate-smart solutions set a new standard for sustainable energy infrastructure development.

Ferdigstillelse planlagt 2026

The project is expected to be completed and operational by the end of 2026. By integrating wooden construction with recycling and circular practices, the Karlshammar transformer station exemplifies how environmentally conscious engineering can advance the energy sector and serve as a model for future projects.