Combined heat and power production in Finland

Combined power and heat production (CHP) has a significant role in energy production in Finland. About 80 per cent of the the district heating is based on cogeneration. At the moment Fortum has seven CHP plants in Finland.

Click a link and read more about our production plants.

Joensuu CHP plant	Kauttua CHP plant	Kuusamo CHP plant	Naantali CHP plant
Nokia CHP plant	Suomenoja CHP plant	Uimaharju CHP plant

Naantali power plant is located in Naantali harbour. The plant has generated power for fifty years. The plant’s first unit was completed in 1960. The plant, which originally generated only power, now also produces most of the district heat used in the Turku region and the steam used by industrial works in the surrounding area.

Annually, the power plant generates approximately 1,000 GWh of power for the transmission network, approximately 600 GWh of steam for industrial customers and approximately 1,500 GWh of district heat for Turun Seudun Kaukolämpö Oy’s heat transmission network. The heat transmission network supplies approximately 180,000 citizens of Turku, Naantali, Kaarina and Raisio with heat.

Coal is the main fuel used at Naantali power plant. Heavy fuel oil is used for start-ups and as support fuel. Refinery gas is also used. The power plant has three production processes. Each power plant unit’s boiler and turbine with support equipment form a closed circuit process.

Sulphur emissions have decreased significantly in the Turku region since the 1980’s, when the decentralised heat production was concentrated to the Naantali power plant and the use of heavy fuel oil, which is high in sulphur content, was reduced. The power plant monitors the air quality in the region continuously in co-operation with municipalities and industrial enterprises in the surrounding area.

The power plant’s sulphur recovery plant has been operational since 1992. The wet method desulphurisation used at the plant binds the flue gas sulphur with limestone slurry, a process that produces gypsum. Depending on the quality of the coal and the operating conditions, the sulphur recovery plant can purify the flue gases by 70-90%. The gypsum produced is mainly used in the plasterboard industry.

Electrical power 256 MW, district heat 350 MW and process steam 80 MW.

Contact information

Naantali power plant
Satamatie 16
FI-21100 Naantali
Tel. +358 10 45 42111
Power plant Manager Ari Anttila
Email: firstname.lastname@fortum.com

Located by the sea in Espoo, Finland, the Suomenoja power plant produces heat for the inhabitants of Espoo, Kauniainen, and Kirkkonummi and electricity for the national grid. The power plant currently produces approximately 1,800 gigawatt-hours of electricity and 2,200 gigawatt-hours of district heat per year.

The first power plant was built over 30 years ago. In 1977 a steam power plant producing electricity and heat and using coal as fuel was completed. A hot water boiler plant based on circulating fluidised bed technology and intended for peak load operation was completed in 1986. A gas turbine plant equipped with heat recovery was commissioned in 1989. The latest investment is a combined heat and power plant that was introduced at the end of 2009.

The new combined heat and power plant consists of a gas turbine that uses natural gas as fuel, a steam boiler that recovers the heat from the gas turbine exhaust gases, and a steam turbine. The efficiency of the combined heat and power plant can be up to 90%.

The introduction of the Suomenoja plant unit, based on the use of natural gas, reduced the use of coal and oil in the area's district heat production. Furthermore, the amount of coal and ash transportation and sulphur dioxide and particle emissions were reduced by almost 40%. The carbon dioxide emissions per produced energy have decreased by more than 10%.

The total production of the Suomenoja power plant covers almost all of the district heat demand of cities Espoo, Kauniainen, and Kirkkonummi. The rest of the district heat requirement is produced by heat plants located in different places in the district heat network. The heat plants are only used for district heat production during the winter when the heat demand is at its highest. District heat is transmitted to the residents and buildings through a district heat network. Fortum is continuously investing in expanding the district heat network. The total length of the network currently circulating in Espoo, Kauniainen, and Kirkkonummi is approximately 800 km.

The production capacity of the Suomenoja power plant: electric power 359 MW, and district heat power 554 MW.

Contact information

Fortum Power and Heat Oy
Suomenoja power plant
Hylkeenpyytäjäntie 4
FI-02270 Espoo, Finland
Power Plant Manager Alpo Savikoski
Email firstname.lastname@fortum.com

5/10/2011

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Combined heat and power production in Finland

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