EIC code (Energy Identification Code) validator.

How an EIC is built

An Energy Identification Code has 16 characters: a 2-character issuing office code (the ENTSO-E central office or a local issuing office), 1 letter for the object type, 12 characters chosen by the issuing office, and 1 check character. Permitted characters are digits, capital letters and the minus sign; the check character is never a minus sign.

Object types

• X party · Y area · Z measurement point · W resource object
• T tie-line · V location · A substation or topological node

Worked example

The guide’s own example is 11XRWENET12345-2: the first 15 characters map to 1, 1, 33, 27, 32, 14, 23, 14, 29, 1, 2, 3, 4, 5, 36, the weighted sum is 2107, and 36 − ((2107 − 1) mod 37) = 2. The guide also notes that a code whose calculation gives 36 must be changed, which is why a minus sign can never be the check character.

Format and checksum only — not a registry lookup

This page checks format and checksum only. It cannot confirm that a code was ever issued or is still active; only the ENTSO-E central registry or the relevant local issuing office can do that. Per the guide, the algorithm is published for checking allocated codes, so this tool checks codes and does not generate them.

Sources

• ENTSO-E EIC Data Exchange Implementation Guide v1.2 (check character algorithm and worked example)
• ENTSO-E EIC Reference Manual 5.5 (structure, permitted characters, object types)
• python-stdnum, stdnum/eu/eic.py (independent implementation, same algorithm)
• ENTSO-E Energy Identification Codes page