1. Member States shall not impede the placing on the market or putting into service, within their territories, of products which comply with this Regulation and the relevant delegated acts.
2. Where Member States provide incentives for a product specified in a delegated act, those incentives shall aim at the highest two significantly populated classes of energy efficiency, or at higher classes as laid down in that delegated act.
3. Member States shall ensure that the introduction of labels and rescaling of labels is accompanied by educational and promotional information campaigns on energy labelling, if appropriate in cooperation with suppliers and dealers. The Commission shall support cooperation and the exchange of best practices in relation to those campaigns, including through the recommendation of common key messages.
4. Member States shall lay down the rules on penalties and enforcement mechanisms applicable to infringements of this Regulation and the delegated acts, and shall take all measures necessary to ensure that they are implemented. The penalties provided for shall be effective, proportionate and dissuasive. Rules which fulfil the requirements of Article 15 of Directive 2010/30/EU shall be considered to fulfil the requirements of this paragraph as regards penalties.
Member States shall, by 1 August 2017, notify the Commission of the rules referred to in the first subparagraph that have not previously been notified to the Commission, and shall notify the Commission, without delay, of any subsequent amendment affecting them.