5. Disclosure of energy sources

Suppliers shall specify in bills the contribution of each energy source to the electricity purchased by the final customer in accordance with the electricity supply contract (product level disclosure). The following information shall be made available to final customers in, with, or signposted to within their bills and billing information: the contribution of each energy source to the overall energy mix of the supplier (at national level, namely in the Member State in which the electricity supply contract has been concluded, as well as at the level of the supplier if the supplier is active in several Member States) over the preceding year in a comprehensible and clearly comparable manner; information on the environmental impact, in at least terms of CO_(2) emissions and the radioactive waste resulting from the electricity produced by the overall energy mix of the supplier over the preceding year. As regards point (a) of the second subparagraph, with respect to electricity obtained via an electricity exchange or imported from an undertaking situated outside the Union, aggregate figures provided by the exchange or the undertaking in question over the preceding year may be used. For the disclosure of electricity from high efficiency cogeneration, guarantees of origin issued under Article 14(10) of Directive 2012/27/EU may be used. The disclosure of electricity from renewable sources shall be done by using guarantees of origin, except in the cases referred to in points (a) and (b) of Article 19(8) of Directive (EU) 2018/2001. The regulatory authority or another competent national authority shall take the necessary steps to ensure that the information provided by suppliers to final customers pursuant to this point is reliable and is provided at a national level in a clearly comparable manner.

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Source: EUR-Lex (Cellar) · retrieved 2026-10-30 · Text as adopted (Official Journal); later amendments are not incorporated in this text.