Attack on Energy Infrastructure Sparks Outage and Investigation
Vulkangruppe called attack an 'act of resistance' against 'greed for energy' targeting fossil-fuel economy.
Sunday repairs reconnected 7k households and 150 firms, but five high-tension cables damaged, complicating repairs.
45k households and 2k firms lost power, schools closed, traffic lights and S-Bahn affected, hospitals used generators.
Police investigating after letter claimed responsibility, incendiary devices caused damage, repairs hindered by snow and frost.