In our office building, the annual Gas Consumption accounts for more than 40% of the total annual energy consumption. The gas is used for Heating and for Cooking (for a Restaurant). The project has a general gas meter, another sub-meter for the Restaurant, but no sub-meter for the heating plant. Both gas meters are fitted with electronic devices which read the meters and transmit data to the BMS. Calculating the difference, we can monitor the consumptions for the Heating plant. Is this approach acceptable, since we don’t actually have a dedicated meter for the Heating plant?