The Westenergy waste-to-energy plant is open for all visitors
Westenergy converts your combustible waste into energy that powers your home and heats your house.

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Our Waste-to-Energy plant is open to visitors and visits are free of charge.
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Westenergy Oy Ab owns and operates a modern Waste-to-Energy plant which utilises source-separated combustible waste as fuel. The WtE plant is located in Mustasaari, near the city of Vaasa in Finland and has been in operation since 2012.

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

Westenergy’s co-operation 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 the Vaasa region is produced in the plant.

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


18.05.2016 Maintenance shutdown at Westenergy Waste to Energy Plant over

The Westenergy WtoE plant is once more operational after an extensive maintenance shutdown which began in early April. The shutdown was successfully carried out on schedule and production began again on Thursday the 12th of May. This year’s shutdown was lengthier than before due to the considerable modifications that were carried out. The most important change was the recladding of the furnace walls.

The Westenergy WtoE plant was shut down on the 13th of April. During the shutdown, the previous furnace wall coverings and boiler tubing was replaced with new Inconel-clad tubing. Inconel is a metallic coating which protects the tubes and is much more resilient to the challenges posed by heat and impurities than the previously used masonry. With these modifications, we expect considerable improvements in plant availability and energy efficiency.

Another major improvement carried out during the shutdown period was the optimization of the boiler air supply. Further increases in both energy and plant efficiency can be achieved with improved control over the air supply.

In addition to the modifications, the regular scheduled maintenance work was carried out. The waste bunker was also emptied for inspection which showed that it was in good condition.

During the shutdown the waste deliveries were diverted to a temporary storage area but the reception of waste into the bunker resumed again two weeks ago.

The finishing of the boiler insulation and cleaning of the production premises will continue into the end of May but after that our visitors will once again be able to enjoy full plant tours.

According to Westenergy CEO Olli Alhoniemi, “ This year’s maintenance shutdown and all the work carried out during it were an enormous undertaking. Everything was done successfully, as planned, on a very tight schedule. Especially great was the fact that our large team of people speaking different languages and coming from different cultures could achieve this result without any work-related accidents. Not only were we successful in terms of time but also and even more crucially in terms of safety and work atmosphere. Next, we shall begin optimizing our new modifications to raise the availability and efficiency of our plant to a whole new level.”

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