Westenergy Oy Ab owns and operates a Waste-to-Energy plant which utilises source-separated combustible waste as fuel. The Waste-to-Energy plant is located in Mustasaari, near the city of Vaasa in Finland, and the construction and installation work was completed in 2012.

The Westenergy Waste-to-Energy plant is an important part of a well-functioning waste management system. The plant extracts energy from non-recyclable waste in an efficient, safe and clean way.

Westenergy’s cooperation partner Vaasan Sähkö Oy uses the steam produced in the plant to produce electricity and district heating. Over one third of the district heating needed in Vaasa is produced at the plant.

Westenergy Oy Ab is owned by five municipal waste management companies (Lakeuden Etappi Oy, Ab Stormossen Oy,  Vestia Oy, Botniarosk Oy Ab ja Millespakka Oy). The shareholders operate in an area coverin approximately 50 municipalities and over 400 000 inhabitants.