Grid code specifications for demand connections
Fingrid is currently updating the Grid code specifications for demand connections. More information about the update can be found here.
This document contains the Grid Code Specifications for the Demand Connections required by Fingrid Oyj (hereinafter referred to as “Fingrid”), by virtue of the system responsibility imposed on Fingrid, of distribution networks and demand facilities connected to the Finnish transmission grid and of distribution networks and demand facilities offering demand-side management services and connected to the Finnish power system. In addition to these Specifications, connecting parties shall fulfil Fingrid’s General Connection Terms (YLE) valid at the time of connection, the terms specified in the Main Grid Contract and the connection terms set by the relevant network operator.
The Specifications are based on the European Network Code (EU Commission Regulation 2016/1388), to which Fingrid has made national additions and clarifications. The aim of the European network codes is to guarantee equal and non-discriminatory conditions for competition on the internal energy market, to ensure system security and to create harmonised connection terms for grid connections.
Nationally, the purpose of the Grid Code Specifications for Demand Connections is to ensure that
- the connecting party’s electrical equipment withstands the voltage and frequency fluctuations occurring in the power systems,
- the connecting party’s electrical equipment does not disconnect from the grid due to the frequency and voltage fluctuations,
- while synchronised to the power system, the connecting party’s electrical equipment does not cause any adverse impacts to the other installations connected to the power system, and
- the relevant network operator and Fingrid obtain the data on the connecting party’s electrical equipment, necessary in the planning of the power systems and its operation and in the maintaining of system security.
Technical requirements for demand facilities connected to the Fingrid transmission system
Fingrid has also published on 12 June 2026 a separate document entitled “Technical requirements for large demand facilities” (Suurten kulutuslaitosten tekniset vaatimukset, see attachments). The technical requirements presented in this document are applied immediately to demand facilities directly connected to the Fingrid's transmission grid. This approach is applied because the connection of new large demand facilities requires technical requirements that complement the current KJV2018 Specifications. The requirements apply to new demand facilities and to modifications made to existing demand facilities.
The requirements described in the document do not apply to demand facilities connected to distribution networks. The content of the document is consistent with the requirements specified for Type D demand facilities in the KJV2026 draft. Once the Energy Authority has confirmed the KJV2026 requirements (in their final, post-consultation form), the new requirements will also be applied to demand facilities connected to distribution networks.