At the action-packed ceremony in central London, which attracted more than 450 people, Energy Services Director Mike Stafford took to the stage to collect the well-deserved trophy.
He said: “I think we put in a good entry, we put a lot of effort into it, the customer helped us enormously and yeah, a really good sensation, very good.
“We and the customer are never happy with a certain level of energy savings, we always like to look for the next tranche so it’s onto another year, onto another few percentage of reductions, we’ll see where we go from here.”