Caruna Group 1 January – 31 December 2025: Network investments are an essential aspect of economic growth, security of supply and clean transition

• The number of new connection agreements signed was 1,650, and there were 922 changes to existing connection rights.
• The amount of renewable electricity produced into Caruna’s network was 4.4 TWh, and the production capacity for renewable energy was 1,924 MW.
• The number of customers who are small-scale producers of solar power in solar power systems under one megawatt was 33,900.
• The System Average Interruption Duration Index (SAIDI) per customer was 101 minutes, of which storm Hannes at the turn of the year accounted for 51 minutes.
• Caruna Group’s investments were EUR 80.4 million and return on invested capital was 7.0%.

The energy transition will change the use of energy rapidly in Finland. The electricity consumption is projected to grow by over 50 per cent by 2040. The number of active users of energy will increase rapidly, and customers will increasingly participate in the energy market through energy storage systems and price flexibility, for example. The role of distribution networks as facilitators of electrification will grow further.

The demand for electricity and the increase in power demand will be boosted in particular by the electrification of heating and transport, an increase in wind and solar power, as well as industry and data centre growth driven by the clean and affordable electricity. Electricity network investments are needed to meet the increasing power demand, in particular.

Electricity networks with strong capacity are the foundation of economic growth and national security

The changing operating environment requires investments in strengthening electricity network capacity and in the modernisation of the network.

– With the investments, we ensure that the electricity network supports urban growth, makes modern customer solutions possible and creates a strong foundation for economic growth and security of supply in electricity distribution. For us to carry out the network investments necessary for the electrification of society and to strengthen security of supply, it is important to develop current regulation so that network companies’ financial and operating prerequisites for doing so are sufficient. This will enable us to do our part in supporting Finland’s economic growth, says Jyrki Tammivuori, CEO of Caruna.

In 2025, Finland’s transmission system operator Fingrid implemented regional restrictions to the production, storage and consumption of electricity for the first time. Although the restrictions create challenges in the implementation of new industrial projects, electricity storage systems, data centres and extensive solutions for electric transport and heating solutions, they also underline the shared need for close cooperation in the electricity system as a whole. This impacts the entire sector from the transmission grid to the regional distribution networks.

Strong gusts of wind caused by storm Hannes, which began at the end of December and continued through the turn of the year, caused power outages particularly on the coast and in the archipelago in Western and Southwestern Finland as well as in Ostrobothnia and, to some extent, in Koillismaa. The network has been developed extensively in the recent years, which is why the share of prolonged interruptions remained low although the total number of power outages was high. Caruna estimates that the number of customers experiencing power outages would have been up to three times higher, and the outage durations significantly longer, without these investments.

The development of Caruna’s operational activities was mainly positive in 2025. Caruna’s System Average Interruption Duration Index (SAIDI) per customer increased and was 101 minutes in January–December, of which the impact of storm Hannes in December was 51 minutes. The Net Promoter Score (NPS) measuring customer satisfaction increased slightly and was 39.

Caruna continued its long-term work to strengthen its safety culture. Safety management is based on the model of continuous improvement and has been certified in accordance with the ISO 45001 standard. Safety is a shared objective for the entire supply chain, and it is developed systematically through orientation, training, active reporting of deviations and regular inspections. The goal is zero accidents. In 2025, the total number of accidents was three, down by one accident from the previous year.

Caruna has also taken measures to strengthen its cash flow. The strong cash flow and liquidity will be applied to future loan repayments. Caruna did not pay dividends for 2025. Caruna’s return on invested capital was 7.0 per cent.