# Operational Energy 3.2 Hot Water
# Applies to
Non-residential developments
# Objective
Ensure the efficient use of energy and to reduce consumption and greenhouse emissions from water heating.
# Summary
Points are awarded when the hot water system energy consumption meets the benchmark for non-residential spaces, as demonstrated by commitment to deemed-to-satisfy (DTS) criteria or demonstrated by alternative modelling.
If you have used the built in calculation tools, the result here is calculated from previous inputs, and also from the efficiency of your hot water fittings/fixtures which are entered in the water section. To improve your result, improve the efficiency of your hot water system, add solar hot water and/or improve the efficiency of your hot water fittings/fixtures (e.g. showers in water section).
# Documentation & evidence required
- Location of hot water systems to be shown on plans.
When providing own modelling, these must include hot water system reference system set as electric storage meeting MEPS or 4 star gas storage hot water meeting MEPS, depending on the fuel type of the proposed system.