Responsibility for the environment
We have already reduced CO2 emissions by 92% from 2010 levels. Our goal is carbon-neutral energy production by 2030.
CO2 emissions down
For a long time, we have worked purposefully to reduce our carbon dioxide emissions by investing in domestic renewable energy sources for our energy production.
We have already reduced our CO2 emissions by more than 92% compared to 2010 levels. (CO2 emissions in 2010: 127 kt; in 2025: 9 kt – a reduction of approx. 92%.) Our goal is to achieve carbon-neutral energy production by 2030. Two ongoing collaborative projects, in particular, play a key role in reaching this objective.
Nordic Ren-Gas is planning a renewable methane production facility in Kerava. Their aim is to build a plant that produces renewable e-methane, hydrogen, and district heating derived from waste heat. Production at the facility is scheduled to begin in 2029. The plant will utilize the flue gas stream from the Kerava Bio-power Plant, capturing approximately 37,000 tonnes of carbon dioxide annually. Furthermore, the production process will generate about 180 GWh of heat per year, which can be utilized in the district heating network. (Source: Yhteysviranomaisen perusteltu päätelmä 23.9.2024, September 23, 2024.)
Waste heat generated by OnZero’s liquid-cooled data center can be almost entirely utilized for district heating by feeding it into the district heating network. The data center provides high-grade heat, eliminating the need for additional heat pumps. Heat generated by the data center replaces heat produced via combustion in the district heating network, which in turn reduces carbon dioxide emissions. Approximately 20 GWh of the heat produced by the data center located in Söderkulla can be utilized annually within the district heating network—an amount corresponding to about 75% of the total district heating demand for the entire Söderkulla area.
Projects under development
Approximately 92% of the energy we produce is already generated using renewable fuels. During periods of extreme cold, when heat consumption peaks, we still have to rely on fossil natural gas. We are currently exploring various emission-free technologies to replace natural gas.
Utilization of waste heat
For example, utilizing industrial waste heat for district heating.
Trading between district heating networks
Let’s utilize the surplus heat produced by others.
Storing heat using electricity
Producing heat for storage using an electric boiler when electricity is available at a low cost.
Small nuclear power plant for district heating production
Utilization of locally produced nuclear heat as district heating.
Climate actions already taken
We phased out coal as early as 2001, and heavy fuel oil was also eliminated over a decade ago, in 2014. The use of domestic renewable biofuel increased significantly in 2009 with the completion of the Kerava bio-power plant. Here you can see what else we have already achieved.
Local solar power since 2016
In 2016, we were among the first in Finland to build a large-scale solar power plant. In the future, we will increase solar energy production in Kerava and Sipoo.
Renewable district heat to Nikkilä area
In 2017, Nikkilä was brought into the scope of renewable district heating when its district heating network was connected to the Kerava network.
Renewable district heat to Söderkulla
In 2021, district heating in Söderkulla is produced using 85 percent renewable wood-based fuel instead of fossil natural gas.
Flue gas condenser for a bioenergy power plant 2021
With the help of a flue gas condenser, waste heat from the power plant is converted into district heat for heating Kerava.
Production of renewable fuel
from CO2 emissions of energy production
In September 2021, we launched a project aimed at capturing carbon dioxide emissions generated by energy production and utilizing them to produce renewable fuel.
Heat storage
A district heating battery for heat storage was built next to the Kerava bio-power plant during 2024.
The origin of the electricity we sell
Approximately 5.1% of the electricity we sell is produced in our own power plants. In addition, we hold stakes in other Finnish power plants, from which the output covers 27.5% of the electricity we sell. The remaining 67.4% is procured from the electricity exchange.
The electricity we sold in 2025 was generated using renewable energy sources (hydropower, wind power, and bioenergy) for 42.1%, fossil fuels for 35.3%, and nuclear power for 22.6%.
Specific carbon dioxide emissions resulting from the use of fossil fuels amounted to 235.26 g/kWh. The amount of spent nuclear fuel generated was 0.95 mg/kWh.
