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art_10__para_4__point_d__text_2

Three additional classes may be added to the classification if required by technological progress. Those additional classes will be A+, A++, and A+++ for the most efficient class. In principle the total number of classes will be limited to seven, unless more classes are still populated.

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Source: EUR-Lex (Cellar) · retrieved 2026-10-29 · Text as adopted (Official Journal); later amendments are not incorporated in this text.