The project is located within a building, its area is less than 75% of the total area of the building. The project has a chiller plant that only supplies the project area.

Bearing in mind that the reference guide indicates "chilled water must be submetered", it is necessary to sub-meter the water flow that enters each AHU of the project or measure the flow of water at the exit of the chiller plant?

In case is not possible install a water meter, will sufficient only measure the total electric consumption of the chiller plant?

Thanks in advance.