Jaakko Kleemola appointed as Managing Director of Suomen Hyötytuuli and Arenso
Business Director Jaakko Kleemola, D.Sc. (Tech.) has been appointed as Managing Director of two companies at the forefront of Finnish wind energy, Suomen Hyötytuuli Oy and Arenso Oy. The appointment will be effective as of August 19, 2025. The former Managing Director of both companies, Toni Sulameri, will continue his work as Managing Director of Tahkoluoto Offshore Oy, the company developing the extension project of the Tahkoluoto offshore wind farm.
“These steps are taken to ensure that all three companies can focus on their core business,” says Arto Nikkanen, Chair of the Board of Arenso, Suomen Hyötytuuli and Tahkoluoto Offshore as well as Managing Director at Lappeenrannan Energia.
”Suomen Hyötytuuli has doubled its production capacity in the past few years and has transitioned from a wind energy construction company to a significant energy production company, shifting its focus to production optimisation. The Tahkoluoto Extension project, on the other hand, is in the development and investment preparation phase. Developing and constructing offshore wind differs greatly from onshore wind production; with these changes, we aim to strengthen the viability of the extension project and support competitive energy production well into the future”, Nikkanen continues.
Kleemola has extensive experience in wind energy development and production. He was appointed as Business Director, Onshore Wind when Arenso Oy was founded in September 2024 after the demerger of Suomen Hyötytuuli Oy. During 2015–2024, Kleemola held various roles at Suomen Hyötytuuli Oy, most recently as director of energy business and technology. Earlier in his career, he worked for more than ten years for Moventas, Vestas and Tampere University of Technology.
Further information
Jaakko Kleemola, Managing Director, Arenso Oy, +358 40 5938 227, jaakko.kleemola@hyotytuuli.fi
Arenso Oy – Arctic Energy Solutions is an expert in onshore and offshore wind energy. We have an in-depth understanding of developing and operating wind energy in the challenging conditions of the Baltic Sea region. We provide innovative and cost-efficient engineering and management services, from pre-studies to design and construction as well as supply-chain management, O&M and optimization. We operate, develop and construct wind energy for Suomen Hyötytuuli Oy and Tahkoluoto Offshore Oy.
Suomen Hyötytuuli Oy is a Finnish renewable energy production company and a pioneer in onshore and offshore wind power. The company takes care of its wind farms throughout their life cycle from project development and construction to production, maintenance and dismantling. Suomen Hyötytuuli has seven wind farms in operation and three under construction and is owned by eight city energy companies in Finland.
Tahkoluoto Offshore Oy owns the Tahkoluoto offshore wind farm extension project. The company was founded in 2024 when Suomen Hyötytuuli Oy carried out a demerger. The Tahkoluoto wind farm extension project consists of 40 turbines with a total capacity of 600–800 MW.