The main grid tariff structure reform
The structure of main grid fees has remained largely unchanged for decades, while the electricity system itself has undergone significant transition. Fingrid’s goal is to renew the tariff structures and create incentives for more efficient use of the transmission grid. This would allow the same grid to serve more customers and help curb the need for investments. More electricity consumption and production could be connected to the grid with fewer investments and at a faster pace. This would also improve the cost-effectiveness of grid fees charged to all grid users and increase the principle of user-pays, cost-reflectiveness, and transparency — making the fee basis fairer.
The main points of the reform proposal
- Increasing transparency and cost-effectiveness by allocating the costs covered by main grid fees to grid infrastructure, loss and system costs
- Introducing the consumption capacity fee, which both encourages customers to manage their power peaks and to invest consumption and generation in the same connections
- Balancing the contributions of consumption and generation fees
- Revising the invoicing model for energy storage in a cost-effective manner.
The reform proposals also include alternative additional reviews on the introduction of voltage-specific and location-based transmission grid service pricing. On 26 June 2026, Fingrid received the Energy Authority’s response to the request for a statement it submitted in autumn 2025 on the introduction of location-based main grid charges. According to the Energy Authority’s interpretation, location-based pricing may, in accordance with current legislation, be applied to connection charges but not to main grid service charges.
The impact assessment study and consultation
The impact assessment study on the reform proposal, carried out as a consultancy study, has been completed and is available (link on the right hand side). The tariff structure does not affect the total fees collected, but making it more cost-based changes the allocation of fees among customers.
We are holding a new consultation on the planned reform of the fee structure in line with stakeholders’ wishes. Responses to the consultation are requested by 14 August 2026 by email at feedback(at)fingrid.fi. Detailed instructions on the consultation are attached to this page. The decisions on the introduction of the new fee structure are intended to be made by Fingrid by the end of 2026, after which Fingrid will submit the related changes to the transmission grid service terms for approval by the Energy Authority. The target date for the introduction of the revised fee structure is early 2029.