The construction work began in 2009, as the project was granted the Environmental and Building permits. The earthworks started in 2009.
In 2010, the contract for the concrete works was tendered, the concrete works started and the earthworks were completed.

At the beginning of 2011, the assembly of the boiler started. In July, the installation of the flue gas treatment system started and in November, the installation of the turbine and the generator started.

The construction and installation work were completed in 2012. The first waste fire took place in the plant in August 2012, and the production of electricity and district heat began a few weeks later.

Commercial production began on the 1st of January, 2013. 

In 2013, the Westenergy Waste-to-Energy plant was selected as the Construction Work 2012. The acknowledgement was admitted by the Building and Construction Engineers AMK RKL, Vaasa region. The size, scope, structural solutions and implementation were considered the most important selection criteria.

Photos taken during construction

Suppliers and cooperation partners

Grate and boiler

The plant’s boiler including auxiliary equipment is supplied by a Swiss-Japanese company, Hitachi Zosen Inova AG which has a long experience of similar plants. The grate is a water-cooled furnace grate with a fuel input of 61 MW. The steam pressure is 40 bar and the temperature of the steam is 400 °C. The plant incinerates 20 000 kilos of waste per hour. The contract also includes cranes, ash treatment system as well as the plant’s automation system. More information can be found on the company’s web site

Flue gas treatment

The flue gas treatment system is supplied by a French company, LAB S.A. The flue gas treatment system uses a semi-dry process, in which the flue gases are cleaned by adding lime and activated carbon. The remaining particles will be absorbed by a fabric filter. More information can be found on the company’s web site

Turbine and generator

Turbine and generator are supplied by a German company, MAN Diesel & Turbo SE. The turbine was manufactured at the company’s plant in Hamburg. More information can be found on the company’s web site

Earth works

The earthworks were carried out by a Finnish company, Destia Oy. The contract included removal of surface soil and stones, blasting of stones, building of roads and yard works including sours. Altogether, 108 000 tons of rock and stones have been blasted and crushed in the area. More information can be found on the company’s web site

Concrete works

The concrete works of the WtE plant were carried out by Lemminkäinen Talo Oy, Western Finland. The contract included waste bunker building, facilities for ash treatment, foundations for the boiler building, the turbine and the flue gas treatment unit as well as additional facilities. The total amount of concrete used was approximately 19 000 m3. More information can be found on the company’s web site

HVAC systems

The HVAC systems are supplied by Lemminkäinen Talotekniikka Oy. The contract includes electricity, heating, lighting, water and plumbing, as well as air conditioning systems for both the process building and the administration building. More information can be found on the company’s web site

Steel structures

The steel structures of the WtE plant building are supplied and erected by Wasacon Oy. The contract includes steel structures and facade elements, doors, windows, roofs and so on. More information can be found on the company’s web site

Administration building

Westenergy’s administration building is being built by Wasacon Oy.  The building consists of ground floor and first floor, and it has a total area of about 1000 square meters. It contains office and social premises including two saunas, meeting rooms and an auditorium.  More information can be found on the company’s web site


The project’s main consultant has been a Danish company, Rambøll Denmark A/S. The architectural and structural design has been made by Rambøll’s subcontractor Citec Engineering Ltd from Vaasa, Finland. More information can be found on the companies’ web sites and


Westenergy is a public procurement unit and Citec Engineering Ltd has been our consultant for the procurments of suppliers and contractors within the fields of building, electric, HVAC and automation services. Citec Engineering Ltd has also been a subcontractor to the main consultant Rambøll Denmark A/S. More information can be found on the web site


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