The point of ESOS is to help organisations identify opportunities for energy saving that they can actually act on. This means ESOS focuses only on the energy use your organisation controls. So tenants in a building should take responsibility for the energy they consume through the operations of that business, but not for energy uses associated with shared areas of the building such as lifts, heating and so on. The most useful tool for separating out the different areas of energy use is sub-metering. Sustainable Energy First has extensive experience of helping organisations use sub-metering to take control of their energy use. To find out more, get in touch.