Ordinary and extraordinary maintenance on MV overhead lines. substations (CS) and remote control CS construction, expansion, renovation Built/expanded/rebuilt 1,108 substations (99 for new connections or power increases, 1,009 for 20 kV voltage adjustment, equipment renovation, remote control), of which 106 substations were rebuilt for increased resilience to “heat waves” (33 stations) and “flooding” (73 stations).