EIC codes information

  1. General Information
  2. Structure of the EIC Code
  3. Application for an EIC code
  4. Explanation of the Different Fields in the EIC Code Application Form
  5. Documents for Downloading
  6. Disclaimers
General Information
With a view to the increasing number of cross-border transactions implemented by more and more participants at the European Electricity Market, the processes of the international electronic data exchanges have to be improved. The European Network of Transmission System Operators for Electricity (ENTSO-E) Association has established Working Group “Electronic Data Interchange”, entitled to maintain the pan-European harmonized scheduling format (ESS – ENTSO-E Scheduling System). One part of the work over that format is to provide for the identification of the participants at the electricity markets all round Europe, by putting in place unified rules, called Energy Identification Coding scheme (EIC).
ENTSO-E has set a specific  administration structure, called ENTSO-E Central Issuing Office (CIO), to manage and maintain the identification. Together with this, ENTSO-E has entrusted  Local Issuing Offices (LIO)  with the activities to issue and manage EIC codes.
In Bulgaria, ESO EAD is entitled to be the Local Issuing Office and thus the company issues and manages the list with the Bulgarian EIC codes in the electricity field. ENTSO-E has assigned to the Bulgarian Local Issuing Office the Office Code 32. Therefore the first two characters of all EIC codes issued by ESO EAD begin with 32. All electricity market participants willing to participate in the cross-border electricity exchanges must obtain an EIC code, which is valid all across Europe.
Structure of the EIC Code
The EIC code is a series of 16 symbols. The first 2 of them refer to the Office Code of the Issuing Office. The third character describes whether it concerns a party in the cross-border exchanges (X), a control area (Y), an electricity metering point (Z), a resource object (W), a tie-line (T), a location (V), a substation (A). The following 12 characters refer to the relevant market participant, e.g. mentioning his name. The final character is a check symbol. It is defined on the basis of the previous 15 characters by means of a special check algorithm. Furthermore, it enables the validation of the entire 16-characters code, confirming its correctness.

Application for an EIC code
All market participants willing to apply for an EIC code with regard to participate in the cross-border exchanges shall meet the criteria laid down in the Energy Law and the Rules for Electricity Trading.
In order to obtain an EIC code, the participant shall fulfill the following documents and send them to ESO EAD by post and e-mail (tsoplan@eso.bg).
At the issuance of the code, the one mentioned in the Application Form may be modified by the Issuing Office.
The data submitted in the application form are transmitted also to the central ENTSO-E database, where the data of all Issuing Offices are collected. Part of the data (name of the company, short name, EIC, e-mail-address, etc.) are published on the ESO EAD web site in the form of a list with the codes issued.
After the Central Issuing Office has published the next update of the CIO data base, ESO EAD will inform the applicant by fax or e-mail about the EIC code defined for him. Usually the update of the CIO data base is published at the beginning of each week, thus the participant applying for EIC code will be informed not earlier than a week from the moment of forwarding the application form to ENTSO-E Central Issuing Office.
Additional information on the EIC is available at the ENTSO-E WG EDI web site: https://www.entsoe.eu/data/energy-identification-codes-eic/
Explanation of the Different Fields in the EIC Code Application Form
All fields have to be filled by using numbers and plain Latin characters only. Any diacritical signs shall be avoided.
Fields in the EIC Code Application Form
Company Name
Full name of company
Maximum of 70 alphanumeric characters. Special characters with diacritical signs shall be avoided.
Display Name
Name to be used for data processing (to be displayed in lists, searches, sorting).
The name shall be unique and shall contain no more than 16 alphanumeric characters. The only characters permitted letters are the plain uppercase Latin characters from 'A' to 'Z', '-', '+', '_', and the figures form '0' to '9'.
Address Line 1-2-3
Maximum of 70 alphanumeric characters.
Postal Code
Post code
Maximum of 10 alphanumeric characters.
Town or locality of the company office
Maximum of 35 alphanumeric characters.
Country identification code under ISO 3166, where the company office is located.
2 alphanumeric characters.
Contact Person
Person to contact
Family name and first name of contact representing the company.
Maximum of 70 alphanumeric characters.
Contact's telephone number.
Must be given in following format: '+country.id (local prefix) local number'. Example number for Bulgaria: 
Maximum of 15 alphanumeric characters.
Contact's fax number.
The format must be the same as that described for the telephone number ( see above).
Maximum of 15 alphanumeric characters.
Address to which e-mail concerning the company should be sent.
Maximum of 70 alphanumeric characters.
ACER code associated to the company.
Mandatory if the participant is reporting in the framework of REMIT. In case that the company does not possess such a code, the field shall be left empty.
Maximum of 12 alphanumeric characters.
Intracommunity VAT Cod
VAT code (Value Added Tax, e. g. БУЛСТАТ in Bulgaria) without spaces and separators between characters.
Maximum of 14 alphanumeric characters.
The description of the EIC code.
Maximum of 700 alphanumeric characters.
Function Names
The functions of the EIC code.
The names are according to the ENTSO-E‘s list of allowed functions for the EIC (Balance Responsible Party, Consumer, Producer, etc.)
Maximum of 70 alphanumeric characters.
Date of the application, in the format 'yyyy-mm-dd'.
Maximum of 10 alphanumeric characters.
Documents for Downloading

Remark: ESO EAD shall not bear any responsibility for changes made in the documents by the users.

Only EIC codes published in the CIO or LIO websites are to be considered as valid EIC codes.
The objective of this Internet page is to allow persons involved in the energy market to get information on the EIC codes necessary to carry out electronic data interchange (EDI).
In no event shall Bulgarian LIO (ESO EAD) be liable for any damages of any kind, including, but not limited to, direct, indirect, general, special, incidental, or consequential damages arising out of any use of the information obtained using this site.
In particular, VAT codes are only provided for information purposes and it is the responsibility of the party to the validity using for example the Taxations and Customs Union web site (http://ec.europa.eu/taxation_customs/vies/).
In addition, our goal is to minimize disruption caused by technical errors. However some data or information on this page may have been created or structured in files or formats which are not error-free and we cannot guarantee that our service will not be interrupted or otherwise affected by such problems. Bulgarian LIO (ESO EAD) accepts no liability with regard to such problems incurred as a result of using this site or any linked external sites.


For additional information, the Bulgarian Local Issuing Office can be contacted at:

fax:     +359 2 96 26 189
tel:      +359 2 921 36 52
e-mail: tsoplan@eso.bg

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