Frequently asked questions

Who needs to apply for and cancel guarantees of origin for electricity?

If an electricity supplier sells or uses renewable or nuclear energy in its marketing, it must verify the origin of the electricity.

An electricity producer and user that, in its other business, gives its customers information about the origin of the electricity it uses, must verify the proportion of renewable or nuclear energy sources (this concerns, for example, forest industry plants that use electricity they produce from renewable energy sources in paper-making, and make use of this information when they market the paper).

What is needed in order to issue a guarantee of origin for electricity?

Before a guarantee of origin for electricity can be issued, the information from the power plant must be verified by a certification company. After verification, a power plant may apply for guarantees of origin. The production information of the plant must be sent if needed to Fingrid in EDI message form. The issuing of a guarantee of origin for a plant takes place once a month or less frequently and after the imbalance settlement for the target month has been completed (E.g. for production in August, Finextra will issue guarantees by the middle of September.) 

In what kind of periods are guarantees of origin for electricity issued?

The guarantees of origin will mainly be issued once a month for the production period of the calendar month in question.

Guarantees of origin can be issued in periods of 3 or 6 months instead of 1 – this choice can be made individually for each power plant. The account holder undertakes to observe the issuing periods it has chosen for one calendar year.

How is a guarantee of origin for electricity used?

When issued, a guarantee of origin is used by cancelling it. Cancellation is thus proof that the electricity has been produced using renewable energy sources. If a guarantee of origin is not cancelled within 12 months of the end of the production period, the registrar expires it automatically so that it is no longer available.

How is a power plant verified?

The power plant owner must deliver to Finextra a certifier's certificate showing that the power plant meets the requirements set out in the Act on Guarantees of Origin for Energy  concerning the method of producing electricity and the energy sources used, and that the arrangements for measuring the energy are reliable. Certification companies are authorised by the Energy Authority and, and listed on their website

Certification carried out for the feed-in tariff system and certification based on the EECS system can be considered equal to certification based on the guarantee of origin system.

The EECS verification is mainly used to verify hydropower and wind power plants. The account holder and distribution grid owner fill in the distribution grid owner's certificate and send it, signed by the distribution grid owner, to the address

How long is the certification of a power plant in force?

EECS verification and a certificate issued by a certification body are valid for five years from the date that the document has been issued. Verification by an approval decision for the feed-in-tariff system is valid in accordance with the validity of the said approval decision.

How is the production information of a power plant delivered to Finextra?

Imbalance settlement information is used whenever possible. Imbalance settlement measurement data about wind farms and hydroelectric plants can usually be used.

If the imbalance settlement does not provide enough exact production information to issue guarantees of origin, the customer should arrange the separate delivery of the production information to Finextra.

With regard to multi-fuel plants, the owner of the plant arranges if needed the delivery of the production information to Fingrid's system as EDI messages.

A guarantee of origin is not issued for electricity that a power plant uses itself.

How is fuel information verified in a multi-fuel plant?

For multi-fuel plants, fuel information is added directly into the electronic register before the issuing of the guarantee of origin.

The responsibility for the accuracy of the fuel information rests with the owner of the power plant.

It must be possible to verify the reliability of the given information for at least six years from the end of the calendar year that the information relates to.

When is the latest time that the previous years guarantees of origin for electricity should be cancelled, if they are used in information given to users of electricity?

A guarantee of origin that concerns the previous years production and which is used to verify information given to users of electricity in previous year should be cancelled by 31 March next year.

How long do guarantees of origin for electricity that have been issued remain in force?

A guarantee of origin can be used within 12 months of the last day of the production of the electrical energy that corresponds to it.

How is a guarantee of origin for electricity expired?

The registrar expires a guarantee of origin immediately if it has not been used within 12 months of the last day of the production of the electrical energy that corresponds to the guarantee.

Expired guarantees of origin cannot be used as proof of the renewability of the origin of the electricity.

How can guarantees of origin for electricity be transferred between EU/EEA Member States?

Guarantees of origin issued by other member states are also recognized between EU/EEA countries. Transfers between the registers of different countries are done through the EECS Hub. The EECS Hub is administered by AIB and practical transfers are carried out in the electronic register administrated by Finextra.

An 'aggregator' can act as a common account holder for several producers

An account holder can administer the power plants of several producers (aggregation). In such a case, the aggregator is responsible for the customer service, necessary powers of attorney and power plant information of these operators. An aggregator might be, for example, an electricity trader, a portfolio owner or another service provider. Aggregation makes it easier for smaller electricity producers to utilise the system, because potential aggregators also often offer other market services to smaller players. The fixed charges of such an arrangement are divided between several operators participating in the aggregation.

The information about a power plant is changing. How is this reported and to where?

If a power plant's information changes during the period that certification is valid, the owner of the power plant must inform the registrar of this to (e.g. essential changes in the plant's production methods or energy sources and changes in co-operative shares of co-operative power plants) or alternatively add the changes directly into the register.

Do you want more information about guarantees of origin for electricity?

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