Fingrid Oyj will raise grid service fees by an average of 7% at the start of 2017.
The grid service fees will be used to cover future investments and operating costs.
Fingrid's grid service fees remain low compared to other European countries, and no major increases are expected in the next few years.
Fingrid is investing close to a quarter of a billion euros in the grid in 2017 and 2018.
The costs of grid operations are not expected to grow significantly, but transitioning to a low carbon energy system will entail additional costs for the company.
Fingrid is expected to operate cost-effectively. The company pays taxes and dividends to Finland and has remained among the European transmission system operators with the lowest price level.
The price increase applies to grid customers. The indirect impact of the increase for residents of blocks of flats and detached homes in Finland will amount to approximately 10-50 cents per month.