June 5, 2025
The owners of the Pietarsaari-based electrical contracting company Sähköpalvelu Walberg
Ab Oy and Kotera Group Oy signed a business arrangement on June 3, 2025, under
which Sähköpalvelu Walberg Ab Oy and its subsidiary Sähköpalvelu Walberg Vaasa Oy
will become part of the Kotera Group. The acquisition is subject to approval by the Finnish
Competition and Consumer Authority, which is expected to be finalized soon.
Both companies will continue to operate as before, under their current business IDs, with
their existing staff and brand names. The acquisition will not affect customer relationships
or personnel. The current management of the companies will also continue through their
participation in Kotera Group ownership.
As a result of the acquisition, the pro forma revenue of Kotera Group for 2024 will exceed
EUR 145 million, with EBITDA of approximately EUR 11 million. The group employs
around 460 construction professionals across twelve operational subsidiaries.
“We are very pleased to welcome Sähköpalvelu Walberg and its skilled personnel to
Kotera Group. The companies have a strong position in the Ostrobothnia electrical
contracting market and a well-established customer base, particularly in the industrial and
public sectors. This acquisition strengthens our electrical expertise, expands our
geographic reach, and provides strong synergies with our other group companies,” says
Tuomas Forsberg, CEO of Kotera Group Oy
“Sähköpalvelu Walberg has built a solid foundation for profitable and responsible growth in
recent years. Joining Kotera Group offers us great opportunities to further develop our
operations, leverage group resources, and offer new career opportunities for our staff. We
are excited about this next phase,” says Björn Walberg, founder and CEO of Sähköpalvelu
Walberg.
Contact Information:
Björn Walberg, CEO, Sähköpalvelu Walberg Ab Oy, +358 50 325 9105,
bjorn.walberg@spwalberg.fi
Tuomas Forsberg, CEO, Kotera Group Oy +358 45 631 8597,
tuomas.forsberg@koteragroup.fi
Kotera Group Oy
Kotera Group Oy is a diverse Finnish construction growth company founded at the end of
2023, specializing in industrial construction and services, HVAC technical contracting and
maintenance, repair and damage restoration, and demolition and recycling services. The
group employs about 460 people across twelve subsidiaries throughout Finland.
Companies within the group include Bark Oy, LVI Kurikka Oy, RKM Group Oy, TT-teknologia Oy, Ahosen Palvelut Oy, Ahosen Kierrätysmurskaus Oy, Pre One Oy, Kuratek Oy, KTC Group Oy, JN Titan Welding Oy, Sähköpalvelu Walberg Ab Oy and Sähköpalvelu
Walberg Vaasa Oy. The group’s pro forma revenue in 2024 was approximately 145 million
euros, and its EBITDA was about 11 million euros. The company is owned by Finnish
investment company Korpi Capital Oy, a Swedish private equity fund managed by
Bragnum Invest AB, and key personnel of the companies. More information is available at
https://koteragroup.fi/
Sähköpalvelu Walberg Group
Sähköpalvelu Walberg Ab Oy, founded in 2009 in Pietarsaari, is an electrical contracting
company serving industrial, public, and construction sector clients—primarily in the
Ostrobothnia region. Services include electrical contracting, maintenance, turnkey
projects, and electrical safety management services. In 2018, operations expanded to
Vaasa, served by its subsidiary Sähköpalvelu Walberg Vaasa Oy. The group employs
about 50 people. Its 2024 revenue was approximately 10.3 million euros, with EBITDA
around 1.0 million euros. More information is available at https://sahkopalveluwalberg.fi/