Transposition
Article 3
1. Member States shall bring into force the laws, regulations and administrative provisions necessary to comply with this Directive by 10 March 2020. They shall immediately communicate the text of those measures to the Commission. When Member States adopt those measures, they shall contain a reference to this Directive or be accompanied by such a reference on the occasion of their official publication. They shall also include a statement to the effect that references in existing laws, regulations and administrative provisions transposing Directive 2010/31/EU or Directive 2012/27/EU shall be construed as references to those Directives as amended by this Directive. Member States shall determine how such reference is to be made and how that statement is to be formulated. 2. Member States shall communicate to the Commission the text of the main provisions of national law which they adopt in the field covered by this Directive.