It is an agency.
The lease ran a month until after we moved out but the keys were handed over 3 weeks in advance.
Our moving out and moving in is documented very well, as well as the spike in consumption after we moved out.
Whats more funny is that the yearly energy consumption for a B rated house (140m2) is between 5000 and 7800 DKK.
This is a B rated apartment of 70m2. Half the size. They expect me to believe that while it was empty it racked up half the yearly consumption of a place more then twice its size
B rated house / 140m2 / yearly consumption 5000/7800 DKK
B rated appartment / 70m2 / consumption in two months, of which the house was empty one month 2700 DKK