Assemblin El grows in the Karlstad area with the acquisition of TIS El

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Assemblin El has acquired the well-renowned electrical engineering company TIS Tervell Installation och Service AB (TIS), with annual sales of approximately SEK 30 million and 24 employees in Karlstad, Sweden, and the surrounding area.

TIS was founded in 2004 and is today a customer-oriented electrical engineering company operating primarily in and around Karlstad. TIS offers flexible solutions and is particularly strong in service, but also has niche installation operations targeted towards local builders, smaller industries, property owners, new production of housing and private homes.

“TIS is an exciting electrical engineering company with employees who are recognised for their skills and with a good reputation in the local market. They have a different customer base and a higher share of service operations than our Karlstad branch currently has, which is why it will be complementary to our operations. We are extremely pleased with this transaction and extend our warmest welcome to our new colleagues, customers and suppliers”, says Fredrik Allthin, President and Business Area Manager of Assemblin El. 

“There are many similarities between TIS and Assemblin, whilst our operations are highly complementary. Together, we will have greater opportunities and increased capacity for collaboration in more installation projects and for developing our customer base in service. We are very positive of our shared future - creating an even more competitive installation and service operation in the Karlstad area”, says Johan Trevell and Lars Skog, principal owners of TIS. 

Read more about TIS El at 

For more information, contact:

Fredrik Allthin, President and Business Area Manager of Assemblin El,, +46 10 472 40 10

Christian Skoglund, Regional Manager at Assemblin El,, +46 10 472 40 30

Johan Tervell, President of TIS Tervell Installation och Service, +46 54 85 04 05

Åsvor Brynnel, Head of Communications and Sustainability at Assemblin,, +46 10 475 39 48

About Assemblin

Assemblin is an end-to-end installation and service partner with operations in Sweden, Norway and Finland. We design, install and maintain technical systems for air, water and energy. Our vision is to create smart and sustainable installations that make buildings work and people feel comfortable. We make this possible through close local collaboration and are supported by a strong organisation. We have annual sales of SEK 10 billion and about 5,900 dedicated employees at more than 100 locations in the Nordic region. Read more at




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