The Tesla car plant close to Berlin is now back on the electricity grid, according to network operator Edis on Monday evening, a week after a left-wing extremist group said it had cut the power. Repair work was completed much earlier than initially expected, Edis said. Tesla had expected production to remain at a standstill until the end of the week due to the power outage that occurred around a week ago, when previously unknown perpetrators set fire to an electricity pylon near to Elon Musk’s only European factory. Production at the massive plant came to a halt after the fire at the freely-ac…