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Ene 02b Energy monitoring

(residential only)

See Ene 02a Energy monitoring for non-residential and residential institutions.

Number of credits available	Minimum standards
2	No

Aim

To recognise and encourage monitoring of energy consumption through the use of energy display devices.

Assessment criteria

The following is required to demonstrate compliance:

One credit

Current electricity OR primary fuel consumption data are displayed to occupants through a compliant energy display device.

Two credits

Current electricity AND primary fuel consumption data are displayed to occupants through a compliant energy display device.

Checklists and tables

None.

Compliance notes

Ref	Terms	Description
Shell and core (non-residential and residential institutions only)
CN1	Applicable assessment criteria	Both options: This issue is not applicable. Refer to Appendix D – Shell and core project assessments for a more detailed description of the shell and core assessment options.
Residential - Partially fitted and fully fitted
CN2	Applicable assessment criteria - Single dwellings	Partially fitted: This issue is not applicable Fully fitted: All criteria relevant to the building type and function apply. Refer to Appendix E – Applicability of BREEAM New Construction to single and multiple dwellings, partially and fully fitted for a more detailed description of residential assessment options.
CN2.1	Applicable assessment criteria - Multiple dwellings	Partially fitted: This issue is not applicable Fully fitted: All criteria relevant to the building type and function apply. Refer to Appendix E – Applicability of BREEAM New Construction to single and multiple dwellings, partially and fully fitted for a more detailed description of residential assessment options.
General
CN3	Utility company energy monitoring equipment	Energy meters installed by a utility company that can provide the future homeowner or tenant with accurate and regular energy usage information per dwelling, can comply with this issue.
CN3.1	Electricity is the primary fuel	Where the primary fuel is electricity and current electricity consumption data are displayed to occupants through a compliant energy display device, which includes heating or cooling, two credits can be awarded.
CN3.2	Community heating, cooling or solid fuel systems	If it is not possible to measure the energy consumption based on the incoming mains supply using a compliant energy display device, a heat meter is required to be installed to measure the heat energy. The heat meter must calculate the energy consumption in kilowatt hours (kWh) which can then be transmitted to a compliant energy display device.

Evidence

Ref	Design stage	Post-construction stage
All	Relevant section or clauses of the building specification or contract. Design drawings.	BREEAM Assessor’s site inspection report and photographic evidence of the installed and functioning meter.

Ref

Design stage

Post-construction stage

All

Relevant section or clauses of the building specification or contract.

Design drawings.

BREEAM Assessor’s site inspection report and photographic evidence of the installed and functioning meter.

Additional information

Relevant definitions

Compliant energy display device

This is a system comprising a self-charging sensor fixed to the incoming mains supply or supplies, to measure and transmit energy consumption data to a visual display unit in an accessible location. As a minimum the visual display unit must be capable of displaying the following information:

Local time
Current (real time) energy consumption (kilowatts and kilowatt hours)
Current (real time) estimated emissions (g/kg CO₂)
Current (real time) tariff
Current (real time) cost (per hour)
Visual presentation of data (i.e. non-numeric) to allow consumers to easily identify high and low levels of usage
Historical consumption data so that consumers can compare their current and previous usage in a meaningful way. This should include cumulative consumption data in all of the following forms: day, week or month billing period. The data must be stored internally for a minimum of two years or be connected to a separate device with automatic upload from the energy display device.

Primary fuel

The fuel used to provide the majority of heating or cooling to the dwelling under assessment.

Self-charging sensor

A sensor or transmitter powered by the mains supply to the building that transmits energy consumption data to a visual display unit. Long-life batteries, with a minimum life expectancy of seven years, can be used in place of a self-charging sensor or transmitter where the functionality of the system is demonstrated to be maintained by the assessor.

Other information

None.