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Pursuant to Elering’s standardized terms and conditions for connecting to the national transmission system (hereinafter connection conditions) all of the procedures related to connecting to the national transmission system and preliminary investigation and related exchanges of information shall be carried out in the connections information systems egle.ee, in which data must be submitted regarding the desired connection and the necessary supplementary documents.

In submitting the grid connection application, it should be borne in mind that the documents to be presented cover both the power-generating module and installations related to the module as well as the power line and substations between the connection point and the power-generating module.

If the technical parameters of the power-generating module change at a later stage, the technical solution for the connection as well as the connection fee related thereto may change.

To obtain a connection offer, the customer must pay a procedural fee.

Within 5 working days of the payment of the procedural fee, Elering shall notify the customer of any deficiencies in the grid access application. After such a notification has been sent by Elering, the customer has 20 business days for eliminating the shortcomings in the grid access application.

The connection offer shall be presented to the customer within 90 days of acceptance of the grid access application. The offer is good for 60 days, and during this period, a agreement must be concluded.

The connection offer specifies the following:

  • the locations of the connection point and the metering point;
  • the amount of the connection fee or the fee for the amendment of the conditions, the conditions for payment of the fee;
  •  the calculation of the fee;
  • the technical solution for the connection along with the basic electrical parameters of the connection point;
  • conditions for ensuring grid connection;
  • amendment of the consumption and/or generation conditions;
  • conditions for amendment and termination of the connection contract;
  • conditions of the general part of the connection agreement;
  • the deadline for readiness of the connection;
  • other terms and conditions.

A connection contract is deemed to have been entered into if Elering receives an acceptance of the connection contract offer not later than on the last day of the validity of the connection contract offer and the connectee has, along with the grid access application, submitted all required data and documents to Elering. Signing of the connection agreement shall be considered acceptance of the connection offer.

The following must be appended to applications for connecting a power-generating module or mixed installation or for amendment of their generation and/or demand conditions:

  • decision establishing a detailed plan enabling the construction of the electrical installation, design conditions or building permit under which the electrical installation to be connected to the transmission system is in conformity with the land use and construction conditions of the location;
  • a copy of the decision made by the decision-maker specified in the Environmental Impact Assessment and Environmental Management System Act, certifying that the environmental impact has been assessed or according to which the environmental impact does not need to be assessed;
  • Documents certifying that the market participants who wants to connect to the distribution grid has a legal basis to use the immovable or the civil engineering works for which they desire a grid connection;
  • Location map indicating the existing or desired location of the electrical installation and connection point together with coordinates;
  • PQ diagram for the generating module’s active and reactive power calculated at the connection point;
  • Other significant appendices to be added to the application which the applicant deems necessary to submit.

In the case of a connection established for the consumer or distribution grid company at new connection point or amendment of consumption and/or generation conditions at existing connection point, the following must be appended to the grid access application:

  • Location map indicating the existing or desired location of the electrical installation and connection point together with coordinates;
  • Description of the process for start-up and shutdown of the electrical installation and forecasted description of its operation, indicating all material circumstances that influence operation (if the capacity of the consumer’s electrical appliance to be connected to the grid is more than10 MW);
  • PQ diagram for the power-generating module’s active and reactive power calculated at the connection point (if a type D power-generating module connects to a distribution grid company’s grid);
  • Other significant appendices to be added to the application which the applicant deems necessary to submit.

If the data required in the connection point were previously submitted to the TSO by the customer and no amendments have been made to them, the customer may elect not to submit the required materials, citing an earlier application or letter in the course of which the required data were submitted.

The following must be appended to applications for connecting a power-generating module or mixed installation or for amendment of their generation and/or demand conditions:

  • decision establishing a detailed plan enabling the construction of the electrical installation, design conditions or building permit under which the electrical installation to be connected to the transmission system is in conformity with the land use and construction conditions of the location;
  • a copy of the decision made by the decision-maker specified in the Environmental Impact Assessment and Environmental Management System Act, certifying that the environmental impact has been assessed or according to which the environmental impact does not need to be assessed;
  • Documents certifying that the market participants who wants to connect to the distribution grid has a legal basis to use the immovable or the civil engineering works for which they desire a grid connection;
  • Location map indicating the existing or desired location of the electrical installation and connection point together with coordinates;
  • PQ diagram for the generating module’s active and reactive power calculated at the connection point;
  • Other significant appendices to be added to the application which the applicant deems necessary to submit.

In the case of a connection established for the consumer or distribution grid company at new connection point or amendment of consumption and/or generation conditions at existing connection point, the following must be appended to the grid access application:

  • Location map indicating the existing or desired location of the electrical installation and connection point together with coordinates;
  • Description of the process for start-up and shutdown of the electrical installation and forecasted description of its operation, indicating all material circumstances that influence operation (if the capacity of the consumer’s electrical appliance to be connected to the grid is more than10 MW);
  • PQ diagram for the power-generating module’s active and reactive power calculated at the connection point (if a type D power-generating module connects to a distribution grid company’s grid);
  • Other significant appendices to be added to the application which the applicant deems necessary to submit.

If the data required in the connection point were previously submitted to the TSO by the customer and no amendments have been made to them, the customer may elect not to submit the required materials, citing an earlier application or letter in the course of which the required data were submitted.

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