Voimapiha Oy
Voimapiha Oy is a Finnish energy company that supplies renewable hydropower to its owners from Swedish hydroelectric plants on the Indalsälven river.
Last updated September 29, 2026
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Overview
Voimapiha Oy is a Finnish energy company whose business is the ownership and administration of hydropower shares in Sweden. According to its official website, the company supplies renewable energy to its owners from Swedish hydroelectric plants, and it owns and administers hydropower plant shares on the Indalsälven river in Sweden. The company describes its offering as "Finnish-owned Swedish hydropower" (Suomalaisten omistamaa ruotsalaista vesivoimaa). The electricity supply rights of Voimapiha are owned in equal shares by three Finnish energy companies: EPV Energia Oy, Helen Oy and Kymppivoima Oy. This ownership structure makes Voimapiha a jointly held energy procurement and hydropower vehicle rather than a conventional listed utility. Its output volume in a normal production year is approximately 900 GWh. For context, the official site notes that Finland's annual hydropower production in a normal year is about 13 TWh, and that 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. Indalsälven 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 registered in Finland and is identified in public data as a Finnish company. Its operations are cross-border in the sense that the physical generation assets are Swedish while the owners and the supply arrangements are Finnish. Voimapiha's role is essentially to secure long-term renewable hydropower for its three owner companies and to manage their shared interests in the Swedish plants.
History
Voimapiha Oy is a Finnish energy company built around the ownership and administration of hydropower shares in Sweden. Its official website states that the company supplies renewable energy to its owners from Swedish hydroelectric plants and that it owns and administers hydropower plant shares on the Indalsälven river in Sweden. The company frames its business as Finnish-owned Swedish hydropower. The ownership of Voimapiha's electricity supply rights is divided equally among three Finnish energy companies: EPV Energia Oy, Helen Oy and Kymppivoima Oy. This equal-share structure is central to the company's identity: Voimapiha functions as a shared hydropower procurement and management vehicle for its owners rather than as a standalone utility serving retail customers. Voimapiha's generation interests are concentrated on the Indalsälven river, which its website describes as Sweden's third-largest hydropower river. The company holds shares in seven large hydropower plants on that river: Midskog, Näverede, Stugun, Stadsforsen, Hölleforsen, Järkvissle and Sillre. The combined capacity of these plants is 626 MW, and Voimapiha's own capacity share is 161 MW. In a normal production year, Voimapiha's output volume is approximately 900 GWh. The company places this in context by noting that Finland's annual hydropower production in a normal year is about 13 TWh, and that Voimapiha's share of Swedish hydropower corresponds to roughly seven percent of Finland's hydropower production. Public data identifies Voimapiha as a Finnish company. The available evidence does not specify a founding year, headquarters address, or named executives. What is clear is the company's operating model: it holds long-term shares in Swedish hydropower assets and channels the resulting renewable electricity to its three Finnish owners under equal ownership.
Voimapiha Oy is identified in public data as a Finnish company.
Voimapiha's electricity supply rights are owned in equal shares by EPV Energia Oy, Helen Oy and Kymppivoima Oy.
Voimapiha holds shares in seven large hydropower plants on the Indalsälven river in Sweden.
The combined capacity of the seven plants is 626 MW, with Voimapiha's capacity share at 161 MW.
Voimapiha's output volume in a normal production year is approximately 900 GWh.
Products and positioning
A Finnish-owned vehicle for Swedish hydropower, jointly owned by three Finnish energy companies and supplying renewable energy to its owners.
Renewable hydropower supply to owners
Voimapiha supplies renewable energy to its owners from Swedish hydroelectric plants.
Hydropower plant shares on the Indalsälven river
The company owns and administers shares in seven large hydropower plants on the Indalsälven river.
Electricity supply rights
Voimapiha's electricity supply rights are owned in equal shares by EPV Energia Oy, Helen Oy and Kymppivoima Oy.
Sources2 sources
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