1.The calculation of the solvency at the level of the group of the insurance and reinsurance undertakings referred to in Article 213(2)(a) shall be carried out in accordance with the technical principles and one of the methods►M13set out in Articles 221 to 233a◄.
2.Member States shall provide that the calculation of the solvency at the level of the group of insurance and reinsurance undertakings referred to in Article 213(2)(a) shall be carried out in accordance with method 1, which is laid down in Articles 230 to 232.
However, Member States shall allow their supervisory authorities, where they assume the role of group supervisor with regard to a particular group, to decide, after consulting the other supervisory authorities concerned and the group itself, to apply to that group method 2 in accordance with Articles 233 and 234, or, where the exclusive application of method 1 would not be appropriate, a combination of methods 1 and 2 in accordance with Articles 233a and 234.
3.Without prejudice to the treatment of undertakings referred to in Article 228(1), supervisory authorities may decide to apply method 2 pursuant to paragraph 2, second subparagraph, of this Article only to insurance and reinsurance undertakings, third-country insurance and reinsurance undertakings, insurance holding companies, mixed financial holding companies, and holding companies of third-country insurance and reinsurance undertakings.