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Voimapiha Ab

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Finnish-owned energy company that supplies renewable hydropower from Swedish plants on the Indalsälven river to its three Finnish municipal owners.

Last updated September 29, 2026

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Nov 4, 2026
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Overview

Voimapiha Ab (also referred to as Voimapiha Oy) is a Finnish energy company that supplies renewable energy to its owners from hydropower plants in Sweden. According to its official website, the company owns and administers hydropower plant shares on the Indalsälven river in Sweden. Its electricity supply rights are owned in equal shares by three Finnish energy companies: EPV Energia Oy, Helen Oy and Kymppivoima Oy. In a normal production year, Voimapiha's output volume is approximately 900 GWh. For context, Finland's annual hydropower production in a normal year is about 13 TWh, meaning Voimapiha's share of Swedish hydropower corresponds to roughly seven percent of Finland's hydropower production. Voimapiha owns shares in seven large hydropower plants located on the Indalsälven river, which is described as Sweden's third-largest hydropower river. The plants in which Voimapiha holds shares are Midskog, Näverede, Stugun, Stadsforsen, Hölleforsen, Järkvissle and Sillre. The total capacity of these plants is 626 MW, of which Voimapiha's capacity share is a total of 161 MW. The company is structured as a joint venture vehicle through which its three Finnish municipal energy owners secure renewable hydropower generation from Sweden. Its business model is therefore not retail electricity sales but the ownership and administration of generation assets and the delivery of the resulting renewable energy to its shareholders. The company is private and is not listed on a stock exchange.

History

Voimapiha Ab is a Finnish energy company established to own and administer hydropower plant shares in Sweden on behalf of its Finnish owners. According to its official website, the company owns and administers hydropower plant shares on the Indalsälven river in Sweden. Its electricity supply rights are owned in equal shares by EPV Energia Oy, Helen Oy and Kymppivoima Oy. The company's operational focus is the Indalsälven river, described as Sweden's third-largest hydropower river. Voimapiha holds shares in seven large hydropower plants on the river: Midskog, Näverede, Stugun, Stadsforsen, Hölleforsen, Järkvissle and Sillre. The total capacity of these plants is 626 MW, of which Voimapiha's capacity share is 161 MW. In a normal production year, Voimapiha's output volume is approximately 900 GWh. This corresponds to roughly seven percent of Finland's annual hydropower production, which is about 13 TWh in a normal year. The company is private and is not listed on a stock exchange. No founding year, founder, headquarters address or executive names are provided in the available evidence.

Products and positioning

A Finnish-owned joint venture energy company supplying renewable hydropower from Swedish plants to its three municipal energy owners.

  • Hydropower from Indalsälven river plants

    Voimapiha owns shares in seven large hydropower plants on the Indalsälven river in Sweden: Midskog, Näverede, Stugun, Stadsforsen, Hölleforsen, Järkvissle and Sillre. Total plant capacity is 626 MW, with Voimapiha's capacity share at 161 MW.

  • Renewable energy supply to owners

    The company supplies renewable energy to its owners from Swedish hydropower plants. In a normal production year, output volume is approximately 900 GWh.

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