Article 53 8.

The regulatory authority shall, within two months of the expiry of the period referred to in paragraph 6, adopt its final decision on the certification. In adopting its final decision the regulatory authority shall take utmost account of the Commission's opinion. In any event Member States shall have the right to refuse certification where granting certification puts at risk the Member State's security of energy supply or the security of energy supply of another Member State. Where the Member State has designated another competent national authority to make the assessment referred to in point (b) of paragraph 3, it may require the regulatory authority to adopt its final decision in accordance with the assessment of that competent national authority. The regulatory authority's final decision and the Commission's opinion shall be published together. Where the final decision diverges from the Commission's opinion, the Member State concerned shall provide and publish, together with that decision, the reasoning underlying such decision.