(Appeal - Article 194(1) TFEU - Principle of energy solidarity - Directive 2009/73/EC - Internal market in natural gas - Article 36(1) - Decision of the European Commission on review of the exemption of the OPAL pipeline from the requirements on third-party access and tariff regulation following a request by the German regulatory authority - Action for annulment)
On those grounds, the Court (Grand Chamber) hereby:
1. Dismisses the appeal;
2. Orders the Federal Republic of Germany to bear its own costs and to pay those incurred by the Republic of Poland;
3. Orders the Republic of Latvia, the Republic of Lithuania and the European Commission to bear their own costs.