Connection to the high-voltage and medium-voltage network

Using the Capacity map, you can make a preliminary check of whether there is sufficient capacity for a connection at your desired location within Caruna’s distribution network.

Our map service shows the available capacity of Caruna’s distribution networks at different voltage levels.

You can submit a connection inquiry for your project via Caruna’s Capacity Map once the required connection capacity, location, and implementation schedule of the electricity connection are known. Based on the connection details provided by the customer, Caruna will assess the connection possibilities and feasibility of connecting the site to the network.

Following the connection inquiry and connectivity review, Caruna proceeds with more detailed planning of the connection together with the customer. In the preliminary planning phase, the connection solution and technical requirements for the implementation of the connection are specified based on the basic information of the customer's equipment. The preliminary planning phase takes into account the impact of the connection on reliability of supply, electrical safety, other customers, the environment, and the overall costs of the connection solution. The connection must not compromise the usability of the existing electricity network and customer connections.

During the planning process, it is advisable to initiate the permit application process for the possible connection cable and to check for any crossings with Caruna or other network companies.

In the connection offer, Caruna specifies the connection point, delivery time, and detailed requirements for the connection. The connection method is always agreed upon on a case-by-case basis with the customer. The technical solution and pricing of the connection are determined according to Caruna's connection principles (in Finnish).

The connection and the method of connection are agreed upon in a connection agreement, which defines the connected power, point of connection, connection fee, connection conditions, as well as the property and control border. 

Maturity criteria are applied to high-capacity connections, including medium-voltage connections with a connection capacity of at least 5 MVA as well as connections made to a substation or to the high-voltage distribution network.

As a prerequisite for entering into a high-capacity connection agreement, the connecting party must hold all legally valid permits required for the construction of the electrical installation, such as the land-use plan (or location permit), building permit, and the Energy Authority’s project permit. In addition, an application for an expropriation permit for a possible (110 kV) connection line must have been submitted to the relevant authority.

The commissioning of the connection requires a valid network service agreement.

With the fees specified in the network service price list, Caruna takes care of electricity distribution and provides network services related to electricity distribution, including network maintenance, energy measurement, and 24/7 fault response. In addition, the fees cover transmission network charges.

We adhere to the recommended contract terms by the Finnish Energy Industries Association (Energiateollisuus ry), which provide clear rules for agreements between the customer and the distribution company. We always follow the given contract terms when making connection and electricity network agreements (SJVPE & VPE) and the current network service price list.

It is advisable to notify the connection request in a timely manner, at least four weeks in advance.

The different stages mentioned above for the connection progress simultaneously with the verification process of Fingrid's system technical requirements.