In so far as is necessary to achieve the objectives set out in this Regulation and without prejudice to the respective competences of the Member States and of the Union institutions and bodies, including the European External Action Service, the Agency may develop contacts and enter into administrative arrangements with supervisory authorities, international organisations and the administrations of third countries in particular with those impacting the Union energy wholesale market in order to promote the harmonisation of the regulatory framework. Those arrangements shall not create legal obligations in respect of the Union and its Member States, nor shall they prevent Member States and their competent authorities from concluding bilateral or multilateral arrangements with those supervisory authorities, international organisations and the administrations of third countries. Those arrangements may concern aspects of common interest, such as methodologies of data collection, analysis and assessment of data or other information, and other areas of expertise.