Case C-706/17: Judgment of the Court (Fourth Chamber) of 15 May 2019 (request for a preliminary ruling from the Lietuvos vyriausiasis administracinis teismas — Lithuania) — AB ‘Achema’, AB ‘Orlen Lietuva’, AB ‘Lifosa’ v Valstybinė kainų ir energetikos kontrolės komisija (VKEKK) (Reference for a preliminary ruling — State aid — Concept of ‘aid granted by a Member State or through State resources’ — Measures intended to compensate providers of public interest services in the electricity sector — Concept of aid ‘affecting trade between Member States’ and ‘distorting or threatening to distort competition’ — Concept of‘selective advantage’ — Service of general economic interest — Offsetting of costs involved in the discharging of public service obligations)