Annual Report 2019

Energy solutions for tomorrow’s challenges



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Thermal power

Thermal power

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In accordance with our strategy Decisive Power, we are proceeding based on market terms towards carbon neutrality, aiming for a competitive edge based on our regulation capability and becoming a top expert in the management of our production assets. We manage the entire lifecycle of our power plants. At present, more than 90% of the electricity we produce is carbon neutral, and we aim to exceed 95% in 2020.

Our most important investment project is the Olkiluoto 3 EPR nuclear power plant project of our joint venture TVO, which is Finland’s most significant contribution to the climate effort. In the case of hydropower, we completed a reform of the electricity and automation systems at the Raasakka power plant and made a decision to overhaul the Jumisko hydropower plant in the Kemijoki river in 2021. In the case of thermal power, we invested in solutions to improve the competitiveness, flexibility and efficiency of energy production at our plants, reducing emissions at the same time.

Modernisation of the electricity and automation systems at the Raasakka hydropower plant completed

We completed the modernisation project of the electricity and automation systems of our lowermost hydropower plant in the Iijoki river, Raasakka. The modernisation improves the availability and boosts the energy efficiency of the power plant, as well as makes the production of regulating power more efficient. Regulating power balances out the difference between the demand for electricity and the production volume.

In the reform, we replaced the power plant’s original systems with modern technology. The turbines and generators were also serviced.

Overhauling Jumisko hydropower plant in the Kemijoki river


We made a decision to invest in the overhaul of the Jumisko hydropower plant in the Kemijoki river in 2021. The investment will increase the power and energy efficiency of the Jumisko hydropower plant, and improve the power plant’s capability of producing electricity flexibly at the correct time.

The power plant’s turbine, which dates back to the 1950s, and the electricity and automation systems will be replaced and the generator will be overhauled.

The investment is part of a systematic renovation programme of our hydropower plants. The renovation programme maintains the good condition of our plants, minimises the risk of environmental damage and improves the capability of our plants to support the functionality of the electricity system by providing regulating power.

To read more on the Jumisko renovation, visit our website.

Extensive annual maintenance at the Laanilan Voima power plant in Oulu

In May and June 2019, the Laanilan Voima power plant underwent extensive annual maintenance where all of the power plant’s moving components were inspected and maintained. The goal was ensuring availability and safe operation of the power plant. The annual maintenance also improved the power plant’s energy efficiency and provided environmental benefits.

We started the demolition of the coal-fired power plants in Kristiinankaupunki and Tahkoluoto, Pori

We will completely demolish the coal-fired power plants in Tahkoluoto, Pori and Kristiinankaupunki by the end of 2020.

The power plants were closed down in 2015, because the operations were unprofitable. The final decision on the decommissioning of the plants was influenced by our commitment in increasing carbon neutral production.

The demolition work started in the spring of 2019. Most of the demolition waste will be recycled. New use for the power plant area in Kristiinankaupunki is being developed in cooperation with local companies.

More than forty ongoing development projects

To achieve our strategic goals, we have initiated a host of development projects involving carbon neutrality, regulation capability and management of the production assets. In 2019, we had more than forty ongoing development projects with which we aim for new solutions and strive to decrease our emissions and lifecycle costs, as well as to improve our operational reliability, efficiency and flexibility.

We are searching for means to further improve the utilisation of fuels at our combined heat and power plants so that we could restrict the use of peat and fossil fuels to startup and backup fuels whenever the market situation allows.

We develop the regulation capability of our operations and improve our lifecycle cost management and production processes. We also consider the circulation economy goals in our projects.

In the development work, we utilise the new opportunities offered by digitisation and knowledge-based management. We invest in smart systems and low threshold pilot projects that we implement in cooperation with our partner networks.

For example, a project aiming at better management and thus increased utilisation of recycled fuels is ongoing in Hämeenkyrön Voima. We use data, new sensors and analysis tools to improve predictability and fuel management.

A pilot project by Rauman Biovoima uses proactive condition monitoring, data analysis and machine learning to detect potential future problems and thus avoid production interruptions.

Kymin Voiman power plant in Kouvola


Advanced combustion management increases energy efficiency and reduces emissions

Adjustments of the combustion conditions in the boilers of the Kaukaan Voima and Kymin Voima power plants were made using significantly improved process management technology. The cost-efficient solution reduces the generation of nitrogen oxides in the boilers and improves the power plants’ energy efficiency.

Visit our website to read more



Turbine regulators project in Iijoki


New turbine regulators for Iijoki in cooperation with the University of Oulu

An innovation developed by PVO-Vesivoima and researchers from the University of Oulu enables much faster and more accurate control of the electricity production at a hydropower plant. A totally new type of turbine regulator created by the collaboration project has been commissioned at three hydropower plants in the Iijoki river.

Read more about the collaborative three-year project on our website


Olkiluoto 3 EPR plant unit preparing for production operations

Preparations at the Olkiluoto 3 EPR plant unit for production operations continued in 2019. Most of the construction work for the plant unit is complete. The installation of electrical and instrumentation and control system (I&C), as well as mechanical system is still in progress. During the hot functional testing (HFT) in the spring of 2018, it was detected that a pressuriser surge line in the reactor coolant circuit was vibrating. STUK approved the solution to eliminate the vibration in May 2019, and the absorbers have been installed. STUK will approve structures before the loading of nuclear fuel into the reactor.

According to the updated schedule provided by the plant supplier Areva-Siemens Consortium in December, nuclear fuel will be loaded in the reactor of the OL3 EPR plant unit in June 2020, the plant unit will be connected to the national grid for the first time in November 2020 and regular electricity production will start in March 2021.

The Government granted the plant unit an operating licence in March 2019.

For more information, please visit TVO’s website.

Cornerstone of Posiva’s disposal facility for spent nuclear fuel laid


Posiva has started the construction of a production facility for the handling of spent nuclear fuel. The facility will consist of an encapsulation plant and a final disposal facility. The project will handle the construction of the encapsulation plant as a whole, the required supplementary excavation works for the final disposal facility, the installation of the systems required to start final disposal operations, the operating licence process and the preparation of the supply chains required for the production operation.

The cornerstone for the Posiva encapsulation plant was laid on 23 September.

Posiva Oy is responsible for the final disposal of the spent nuclear fuel generated at TVO’s Olkiluoto nuclear power plant and Fortum’s Loviisa nuclear power plant in Olkiluoto in Eurajoki.

For more information, please visit Posiva’s website.