Case T-196/19: Judgment of the General Court of 6 October 2021 — AZ v Commission (State aid — Aid scheme implemented by Germany for some large electricity consumers — Exemption from network charges in respect of the 2012-2013 period — Decision declaring the aid scheme incompatible with the internal market and unlawful, and ordering the recovery of the aid paid — Action for annulment — Period allowed for commencing proceedings — Admissibility — Concept of aid — State resources — Selectivity — Equal treatment — Legitimate expectations)