Delegated acts
Article 33
1. The Commission is empowered to adopt delegated acts in accordance with Article 34 to review the harmonised efficiency reference values laid down in Regulation (EU) 2015/2402. 2. The Commission is empowered to adopt delegated acts in accordance with Article 34 to amend this Directive by adapting to technical progress the values, calculation methods, default primary energy coefficients and the requirements referred to in Article 31 and in Annexes II, III, V, VIII to XII, and XIV. 3. The Commission is empowered to adopt delegated acts in accordance with Article 34 to supplement this Directive by establishing, after having consulted the relevant stakeholders, a common Union scheme for rating the sustainability of data centres located in its territory. The Commission shall adopt the first such delegated act by 31 December 2023. The common Union scheme shall establish the definition of data centre sustainability indicators and shall set out the key performance indicators and the methodology to measure them.