BREEAM Energy monitoring
The aim of this credit is to encourage the installation of sub-meters to allow building facilities managers and building users to monitor energy consumption within the building and facilitate identifying end uses with a higher energy demand with the intention to reduce consumption where possible (saving money and CO2 emissions).
In an ideal world, it would also allow building occupiers compare meter readings to predicted values to help identify whether there is faulty equipment or the building is being operated incorrectly. As it stands, the "performance gap" makes this difficult. ENE 01 under BREEAM 2018 aims to start to address this.
- Improved awareness of energy usage over time to identify high use applications / systems for potential improvement to improve running costs / reduced bills.
- The facility to track actual energy consumption against design figures to improve demand modelling which can then lead to reduced infrastructure upgrade costs for future projects.
 When to consider
- Space heating.
- Domestic hot water heating (excluding small 'point of use'. water heaters).
- Ventilation, i.e. fans (major).
- Small power (lighting and small power can be on the same sub-meter where supplies are taken at each floor, core or floor plate).
- Renewable or low carbon systems (separately).
- Other major energy-consuming systems/plant, such as:
- Transport systems (lifts, escalators, moving platforms).
- Covered car parks.
- Dedicated computer room, server rooms, datacentres.
- Kitchen and catering equipment.
- Water features (swimming or hydrotherapy pool, fountains, etc.).
- Telecommunications (mobile providers, etc.).
- Electric cars charging stations.
- Drama studios and theatres with large lighting rigs.
- Ovens or furnaces.
- External lighting, advertisement, decorative lighting.
- Ventilation, heating and cooling in circulating areas (revolving doors, air curtains etc.).
|Plant||Rated input power (kWh)|
|Boiler installations comprising one or more boilers or CHP plant feeding a common distribution circuit||50|
|Chiller installations comprising one or more chiller units feeding a common distribution circuit||20|
|Motor control centres providing power to fans and pumps||10|
|Final electrical distribution boards||50|
4. Calculate whether metering of individual systems covers at least 90% of each energy/fuel consumption. Consumption of systems/areas without metering can be calculated based on deduction of other sub-metered values or based on operating hours, installed load etc. Where the sum of sub-metered consumption is less than 90%, additional sub-metering is needed. For more guidance see CIBSE guidelines, especially General Information Leaflet 65 (link below) with easily understandable diagrams and schemes.
- Gross Internal Foor Area (GIFA) > 1 000 m2: all meters to be connected to the appropriate energy monitoring and management system.
- GIFA < 1 000 m2: all meters to be either connected to the energy monitoring and management system or with separate accessible energy sub-meters with pulsed or other open protocol communication outputs.
- Heating / hot water (heating and hot water can be metered using a single meter where it is impractical to divide it per tenanted or functional areas).
- Cooling / chilled water.
- Ventilation (where feasible and practical).
For small tenant units (GIFA < 250 m2) only one meter for electricity, heating and hot water per unit fulfils the requirement. For larger tenant units (GIFA > 250 m2) metering for both the whole unit and for relevant functional areas is required.
List of functional areas types (in BREEAM Manual see Compliance note – Building type specific):
- Office building:
- Retail buildings:
- Education buildings:
- Kitchens (excluding small staff kitchens and food technology rooms).
- Office area.
- Computer suites.
- Lecture halls.
- Conference rooms.
- Drama studios.
- Swimming pools.
- Sports halls.
- Process areas.
- High containment suites within laboratories.
- Controlled environment chambers.
- Animal accommodation areas.
- Data centres.
- IT work and study rooms, including IT-equipped library spaces and any space with provision of more than one computer terminal per 5m².
- Individual sub-metering of standard classrooms or seminar rooms is not required.
- Office areas.
- Catering (kitchens or restaurant).
- Conference suites.
- Swimming pool or leisure facilities.
- Hotel bedrooms metered per floor, core, floor plate, in a strategy that would provide benefit to facility management.
 Questions to ask while seeking compliance
- What is the building size?
- What are the energy sources used on site?
- What types of HVAC and domestic hot water systems will be installed?
- Will there be any tenancy areas or areas with a particularly high energy load, e.g. catering facilities, cold storage, IT areas or laboratories?
- Knowledge Base - Ene 02 Energy monitoring (BREEAM NC UK 2014).
- Knowledge Base - Ene 02 Energy monitoring (BREEAM RFO UK 2014).
- Knowledge Base - Ene 02a Energy monitoring (BREEAM Int. NC 2016).
- Sub-metering scheme template (Excel).
 Tips and best practice
- Double-check that the evidence provided matches up to what you know is included in the building design and is streamlined with other pieces of evidence, e.g. if another piece of evidence shows a café/catering facility on site, make sure this has adequate sub-metering for its scope.
- Sub-metering, in particular with connection to a BMS/energy monitoring and management system, tends to be something a design team automatically incorporate into the design of a larger building. Where smaller buildings are concerned bear in mind that anything up to 200m2 can have just one meter for electricity and one for heating purposes.
- Sub-meters aren't particularly expensive in the grand scheme of things.
- Part L of building regulations requires the 90% part of this credit.
- An appropriate metering schedule should be incorporated into the building to be able, in the future, to achieve the BREEAM In-Use energy monitoring issues credits without any additional cost for sub-metering improvement .
 Typical evidence
 Design stage evidence
A schematic/layout for electricity and gas/other energy sources across the development, which should indicate meters and sub-meters on the supply to each relevant energy consuming end-use. If not otherwise stated on the schematic, annotations detailing connectivity to an energy monitoring and management system or, for smaller buildings, provision of meters with an open protocol/pulsed output for connection to a future energy monitoring and management system and confirmation that the sub-meters are identifiable to building users (e.g. labelled).
 Post-construction stage evidence
Ask the M&E engineers to check their Design Stage evidence prior to the site visit (just in case there have been any major changes you need to look out for), an As-Built issue of the schematics/layouts would be useful as evidence.
Whilst on site, take photographs of meters and sub-meters, showing labelling/connection to the energy monitoring and management system. You could also take photographs of the energy monitoring and management system screen to demonstrate that the energy consuming systems are metered appropriately.
 Applicable schemes
The guidelines collated in this Issue Support Document aim to support sustainable best practice in the topic described. This issue may apply in multiple BREEAM schemes covering different stages in the life of a building, different building types and different year versions. Some content may be generic but scheme nuances should also be taken into account. Refer to the comments below and related articles to this one to understand these nuances. See this document for further guidelines:
- BREEAM UK New Construction 2014.
- BREEAM UK Refurbishment and Fit-out 2014.
- BREEAM Intl. New Construction 2016.
- BREEAM Intl. Refurbishment and Fit-out 2015.
- --Tom Blois-Brooke 16:17, 01 Jul 2019 (BST)
- --Elisa Caton 12:35, 06 Mar 2018 (BST)
- --Sandra Turcaniova 18:30, 20 Dec 2017 (BST)
 Related articles on Designing Buildings Wiki
- Energy consumption.
- Heat meter.
- Multi-jet meter.
- Part l.
- Smart meter owners report higher, not lower, bills.
- Smart meter.
- Turbine meter.
- Ultrasonic meter.
- Velocity-type meter.
 External references
Issue support documents
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Issue support documents are written for named BREEAM Issues or sub-issues. More info. (ac) = awaiting content.
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- BREEAM Sustainability champion
- BREEAM Environmental management
- BREEAM Considerate construction
- BREEAM Monitoring of construction site impacts
- BREEAM Aftercare support
- BREEAM Seasonal commissioning
- BREEAM Testing and inspecting building fabric
- BREEAM Life cycle cost and service life planning
- BREEAM Stakeholder consultation (ac)
- BREEAM Commissioning (ac)
- BREEAM Handover (ac)
- BREEAM Inclusive and accessible design (ac)
- BREEAM Post occupancy evaluation
 Health and Wellbeing
- BREEAM Visual comfort Daylighting (partly ac)
- BREEAM Visual comfort View out
- BREEAM Visual comfort Glare control
- BREEAM Indoor air quality plan
- BREEAM Indoor air quality Ventilation
- BREEAM Thermal comfort
- BREEAM Internal and external lighting (ac)
- BREEAM Indoor pollutants VOCs (ac)
- BREEAM Potential for natural ventilation (ac)
- BREEAM Safe containment in laboratories (ac)
- BREEAM Acoustic performance
- BREEAM Safety and security (ac)
- BREEAM Reduction of energy use and carbon emissions
- BREEAM Energy monitoring
- BREEAM External lighting
- BREEAM Low carbon design
- BREEAM Passive design
- BREEAM Free cooling
- BREEAM LZC technologies
- BREEAM Energy efficient cold storage (partly ac)
- BREEAM Energy efficient transportation systems
- BREEAM Energy efficient laboratory systems
- BREEAM Energy efficient equipment (partly ac)
- BREEAM Drying space
- BREEAM Transport assessment and travel plan
- BREEAM Public transport accessibility
- BREEAM Sustainable transport measures
- BREEAM Proximity to amenities
- BREEAM Cyclist facilities
- BREEAM Alternative modes of transport (ac)
- BREEAM Maximum car parking capacity
- BREEAM Travel plan
- BREEAM Home office (ac)
- BREEAM Water consumption
- BREEAM Water efficient equipment
- BREEAM Water monitoring
- BREEAM Water leak detection (ac)
- BREEAM Hard landscaping and boundary protection
- BREEAM Responsible sourcing of materials
- BREEAM Insulation
- BREEAM Designing for durability and resilience
- BREEAM Life cycle impacts
- BREEAM Material efficiency (ac)
- BREEAM Construction waste management
- BREEAM Recycled aggregates
- BREEAM Speculative floor & ceiling finishes
- BREEAM Adaptation to climate change
- BREEAM Operational waste
- BREEAM Functional adaptability (ac)
 Land Use and Ecology
- BREEAM Site Selection
- BREEAM Ecological value of site
- BREEAM Protection of ecological features
- BREEAM Minimising impact on existing site ecology
- BREEAM Enhancing site ecology
- BREEAM Long term impact on biodiversity (ac)
- BREEAM Impact of refrigerants
- BREEAM NOx emissions
- BREEAM Flood risk management (ac)
- BREEAM Surface water run-off (ac)
- BREEAM Reduction of night time light pollution (partly ac)
- BREEAM Reduction of noise pollution
Once an ISD has been initially created the '(ac)' marker can be removed
This particular index is based around the structure of the New Construction and RFO schemes.