We are working with a building in Norway that has a ground-source heat pump as its main heating system and it is also connected to communal district heating as a back-up. The Central Plant is located in the building but there is a possibility that other buildings are going to use partially energy from this Central Plant.
That means we have a case of a Campus Energy System and we should use the guidance for Campus Thermal Energy in LEED. According to this document, the Proposed building should be simulated with a virtual on-site plant with average efficiencies. How should we calculate our average heating and cooling efficiencies since in our case the plant is located in the same building?