Further reduced emissions
We have been reducing the use of coal and peat systematically. At the same time, our carbon dioxide emissions have reduced. We are also reducing our carbon dioxide emissions by improving energy efficiency. Sulphur dioxide and particle emissions have also decreased significantly.
We have invested extensively in our thermal power plants to reduce emissions. The emissions of the plants depend on the fuels used, and on how much their annual production varies.
Pohjolan Voima’s thermal power plants use wood-based fuels such as by-products and residue from forestry, recycled fuels, peat, coal, and small amounts of natural gas and oil as start-up and backup fuels.
We are reducing the use of peat in a controlled manner. Read more on our climate work.
Thermal power: focus on nitrogen oxides
In recent years, we have worked hard to reduce nitrogen oxide emissions. Development work on this has been underway in all of our combined heat and power production plants. An example of this is development of boiler control. With the technology supplier Valmet, we have developed control technology for the boiler of the power plant so that we can control the combustion process more efficiently. This minimises the generation of nitrogen oxides.
- See more on emissions in our Annual Report.
Precise control of the combustion process
In thermal power plants, precise control of the combustion processes in the boilers improves energy efficiency and reduces emissions. State-of-the-art sampling technology in the smokestacks of the power plants produces constant information about emissions.
For example, Rauman Biovoima uses sampling technology, which provides precise real-time data on the concentrations of about 20 compounds.
Hydropower: CO2-neutral electricity
The production of hydropower does not cause CO2 emissions into water or the ground. Nor does it generate solid waste. In Finnish latitudes and in the northern climate, methane emissions are estimated to remain low. This situation is very different in subtropical and tropical regions, where methane emissions in water reservoirs have been studied most.
Methane is generated when organic material decomposes in reservoirs. Generally, Finnish power plants use natural waterways to produce hydropower, which reduces emissions.
The energy efficiency of hydropower plants has been and will be improved at regular intervals. This further reduces emissions per energy unit produced. Renovations also bring environmental benefits. For example, the risk for oil leaks has been minimised when water has replaced oil as lubricant in turbines.
Nuclear power: a key role in climate work
Nuclear power is a zero-emission form of electricity production. It plays a very significant role in climate work in Finland and the EU. In Europe, nuclear energy is used in about half of all low-emission electricity production. In Finland, nuclear power, along with hydropower, is the most important source of low-emission electricity.