Guardian: Young Vic theatre Staging dozens of productions a year, from Chekhov’s Uncle Vanya to (currently) Annie Get Your Gun with Jane Horrocks, London’s Young Vic is an energy-hungry operation. “Lighting is number one for us,” says Damian Ball, the facilities manager. “When we’re ‘teching’ for a show, the lights are on morning, noon and night. So we’ll be looking at turning them down wherever possible.” Air-conditioning is another big drain: 450 people in the main auditorium take a lot of …