(all buildings)
| Number of credits available | Minimum standards |
|---|---|
| 13 | Yes |
Aim
To recognise and encourage buildings designed to minimise operational energy demand, primary energy consumption, and CO₂ emissions.
Assessment criteria
This issue is split into the following parts:
- Energy performance
- Standard route: Use of approved building energy calculation software (up to 9 credits)
- Basic route: Energy efficient design features (up to 4 credits)
- Prediction of operational energy consumption (4 credits)
- Exemplary level criteria (up to 5 credits)
The following is required to demonstrate compliance:
Energy performance
Up to nine credits – Standard route (option 1): Use of approved building energy calculation software
| 1 | Calculate the Energy Performance Ratio for International New Construction (EPRINC). Compare the EPRINC achieved with the benchmarks in Table 26 and award the corresponding number of BREEAM credits. |
Table 26: Ene 01 EPRINC benchmark scale
| Minimum standards | |||
|---|---|---|---|
|
BREEAM credits |
EPRINC | Rating |
Minimum requirements |
| 1 | 0.1 | - | To achieve one or more credits requires an improvement on minimum energy performance reference building level as defined in CN3.3. |
| 2 | 0.2 | ||
| 3 | 0.3 | ||
| 4 | 0.4 | Excellent |
Standard route (option 1): EPRINC of 0.4 or above.
OR 4 credits for prediction of operational energy consumption (where operational energy performance has been substantially improved).
Basic route (option 2): 4 credits |
| 5 | 0.5 | ||
| 6 | 0.6 | Outstanding |
EPRINC of 0.6 or above. AND 4 credits for prediction of operational energy consumption. |
| 7 | 0.7 | ||
| 8 | 0.8 | ||
| 9 | 0.9 | ||
A description of how the EPRINC is calculated from a building's modelled energy demand, primary energy consumption and CO₂ emissions is provided in the Methodology.
Up to four credits – Basic route (option 2): Energy efficient design features
No NCM
Where there is no NCM available, and the design team decide against an alternative modelling approach (see CN3.2), the energy performance of the building can be determined using Checklist A5.
Up to four credits
| 2 | A Suitably qualified energy modelling engineer or accredited professional has used Checklist A5 to determine the number of credits awarded for this issue. |
| 3 | The Suitably qualified energy modelling engineer or accredited professional has confirmed the items selected within Checklist A5 are appropriate to the building type and local climatic conditions to award up to four credits. |
Prediction of operational energy consumption
Four credits – Prediction of operational energy consumption
| 4 | Involve relevant members of the design team in an energy design workshop focusing on operational energy performance at the concept design stage (see Methodology). |
| 5 | Undertake additional energy modelling during the design and post-construction stage to generate predicted operational energy consumption figures (see Prediction of operational energy consumption). |
| 6 | Report predicted energy consumption targets by end use, design assumptions and input data (with justifications). |
| 7 | Carry out a risk assessment to highlight any significant design, technical, and process risks that should be monitored and managed throughout the construction and commissioning process. |
Exemplary level criteria
The following outlines the criteria to achieve up to five exemplary credits for this BREEAM issue:
Up to three exemplary credits – Beyond zero net regulated carbon
| 8 | The building achieves nine credits under the standard route (option 1). |
| 9 | The building has been modelled using the standard route (option 1) and the modelling demonstrates that 100% of the building's service energy use plus a percentage of the building's equipment energy use requirements is generated by recognised on-site or near-site LZC technologies with a direct physical connection to the building (see CN3.7). |
| 10 | Award the exemplary credits based on the percentage of equipment energy use that is met by recognised LZC sources (see Table 27). |
Table 27: Exemplary performance credits for beyond zero net regulated carbon
| Exemplary credits | Percentage of equipment energy use that is met by LZC sources |
|---|---|
| 1 |
≥ 10% |
| 2 | ≥ 50% |
| 3 |
> 100% |
Two exemplary credits – Post-occupancy stage
| 11 | Achieve maximum available credits in Ene 02a Energy monitoring or Ene 02b Energy monitoring. In addition, preschools, primary schools, law courts, prisons and multi-residential buildings must meet the requirements of the second credit for sub-metering by functional or tenanted areas. |
| 12 | The client or building occupier commits funds to pay for the post occupancy stage. This requires an assessor to be appointed and to report on the actual energy consumption compared with the targets set in criterion 6. |
| 13 | The energy model (criterion 5) is saved so that it can be rerun post occupancy. This can be achieved by either: |
| 13.a | Submitting the model to BRE. |
| 13.b | The model being retained by the building owner or a named third party. |
Checklists and tables
None.
Compliance notes
| Ref |
Terms |
Description |
|---|---|---|
| Shell and core (non-residential and residential institution only) | ||
| Applicable assessment criteria |
Energy performance, criterion 1 Shell only: Calculate an Energy Performance Ratio just for the building’s heating and cooling energy demand only (EPR ED). Use the EPR ED achieved as the EPR INC in Table 26.
Prediction of operational energy consumption, criteria 4 to 7 Shell only: These criteria are not applicable.
Shell and core only: All assessment criteria relevant to the building type and function apply.
Refer to Appendix D – Shell and core project assessments of this Scheme Document for further description of the above options. |
|
|
CN1.1 |
Applicable assessment criteria - Shell only and Shell and core |
Where the building services efficiencies are unknown the minimum energy efficiency standards or backstop levels required by the relevant national building regulations should be used. For example, this might occur when the building services are not within the remit of the shell and core developer. |
| Green fit-out agreement |
When modelling Shell only and Shell and core assessments, worst-case assumptions are normally used for the performance of speculative systems where their performance is unknown. These assumptions are based on minimum energy efficiency standards as defined in the national building regulations, or worst-case performance data.
Where a Green fit-out agreement is used, these worst-case assumptions can be replaced with performance specifications required in the fit-out agreement. The agreement must be contractually binding. Any speculative areas not covered by the agreement must still use worst case assumptions. |
|
| Shell only - Installation of building services |
In shell only projects, even where installed system(s) will improve the primary consumption and/or CO₂ EPR metrics, only the EPR demand metric will be used. (KBCN00078) |
|
| Shell only - No energy demand metric |
For Shell only buildings just the energy demand metric is assessed. However, where the NCM is unable to provide the energy demand metric, the available remaining metrics can be used instead. (KBCN0576) |
|
| Residential - Partially fitted and fully fitted | ||
|
CN2 |
Applicable assessment criteria - Single and multiple dwellings |
Both options: 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 | ||
|
Extensions to existing buildings |
For an extension that uses the existing building's services, the energy modelling and percentage of improvement must be based on the building fabric of the extension and the building services that will service the extension. This includes any existing, shared, and new plants that will serve the extension. The energy modelling does not have to consider the existing building fabric where it will be out of the scope of the BREEAM assessment. Nor does it have to consider existing service systems not supplying the extension. |
|
|
CN3.1 |
Suitably qualified energy modelling engineer or accredited expert | Where a National Calculation Methodology (NCM) requires accredited experts to undertake the energy performance calculations, these accredited professionals are also required to demonstrate compliance with this BREEAM issue. If the NCM does not require accredited experts, or alternative approved building energy calculation software is used, then a Suitably qualified energy modelling engineer or accredited professional must carry out the modelling. |
| Hierarchy of options |
Where there is a NCM in the country of assessment, then the standard route (option 1) must be used to demonstrate compliance with this issue. Where there is no National Calculation Method (NCM) in place OR where the NCM does not allow the design team to undertake an analysis of issues such as lighting or renewable energy generation, the design team may undertake a more thorough analysis of the performance of the building using alternative approved building energy calculation software (see CN3.3). The basic route (option 2) is available for design teams if they choose not to carry out energy modelling of their building and where there is no NCM in place. However, because energy modelling is the preferred way to demonstrate that a building is energy efficient, only a maximum of 4 credits are available using the basic route. |
|
| Generating a reference building |
The reference building will be generated using either:
Options 2 and 3 above are only available in countries where the local regulation is less rigorous than Appendix G of ASHRAE Standard 90.1 or the UK’s NCM. |
|
| Performance metrics |
All three performance metrics - demand, primary energy consumption and CO₂ -generated by the approved building modelling software should be entered into the BREEAM scoring and reporting tool to calculate the Ene 01 score, even if there are no mandatory requirements related to a particular metric in the country of assessment. For example, if the local building regulations only set a target with respect to primary energy consumption, but the approved software also reports figures for energy demand, both the figures for primary energy consumption and energy demand should be reported in the BREEAM scoring and reporting tool. |
|
|
CN3.5 |
Countries with a NCM that does not report on all three performance metrics |
The output documents generated by the approved software may not include all three performance metrics required by BREEAM. Where this is the case, all the metrics that are available must be entered into the scoring and reporting tool. |
|
CN3.6 |
Internal lighting not calculated using approved building energy calculation software |
If internal lighting is not included within the modelling calculations, the credits available from modelling will be reduced and the remaining credits awarded for complying with the lighting criteria within Checklist A5 as follows:
|
| Building assessed as part of a larger development | Where the building under assessment forms part of a larger development and either a new or existing Recognised low or zero carbon (LZC) technologies installation is provided for the whole site, then the amount of LZC energy generation counted for in this issue, and subsequent CO₂ emissions saved, should be proportional to the building's energy consumption compared to the total energy consumption for the site. See On-site LZC – whole site shared connection. | |
| Energy consumption and carbon emissions of untreated spaces |
Where the assessment contains a mix of treated and untreated spaces, untreated spaces can be excluded, and the performance based on the treated spaces only. Where the entire assessment is untreated, the whole of the structure(s) must be assessed on the basis that this issue is critical for certification. (KBCN00049) |
|
| Parts of the building not subject to national thermal regulations |
Where parts of the assessed building are not subject to national thermal regulations then these should be omitted from the EPR calculation. (KBCN0534) |
|
| Energy performance assessment for part of a whole building |
If the assessment is only covering part of a whole building, the energy performance assessment must be representative of the part of the building being assessed. Simply taking the energy performance assessment of the whole building would not comply, especially if the non-assessed parts of the building were of a different use. (KBCN0596) |
|
| Building type specific | ||
|
CN4 |
Residential buildings - Calculation procedure for multiple dwellings |
The Ene 01 calculation should be completed for each dwelling or each energy type or each energy group (see CN4.1). The energy performance ratio (EPRINC) should then be area averaged for the whole development using the calculation procedure in the Methodology for either the standard route (option 1) or the basic route (option 2). Where the advised averaging method is deemed unsuitable for the approved building energy methodology, a new calculation can be approved; please contact BRE Global for guidance. An example is where a NCM considers energy consumption in communal areas as well as per dwelling. |
| Residential buildings - Energy type |
A set of residences on a development are of the same ‘energy type’ if they have the same approved building energy calculation software outputs for performance data as outlined in the Methodology. They will exhibit each of the following:
|
|
|
CN4.2 |
Residential buildings - Energy groups |
Energy groups only apply when a building contains multiple flats, apartments within the same building envelope, or adjoined dwellings. The performance data outlined in the Methodology can be averaged across the whole building provided that the same building services strategy is adopted throughout. These dwellings are defined as an energy group:
It is the BREEAM Assessor’s choice whether or not to use the energy groups averaging method or to complete the calculation for each individual dwelling.
Note: This averaging rule cannot be applied to single dwellings. |
|
CN4.3 |
Non-residential buildings - Energy modelling, BREEAM building use and tenancy arrangement |
The legislative criteria for energy modelling may vary according to building size, use, services, and tenancy arrangement. In some instances, modelling may be undertaken for the whole building; in others, modelling may be undertaken for each individual unit or tenanted area within a building. The scope of a BREEAM assessment typically covers the whole building, regardless of whether that building consists of several units to be sublet.
Where energy modelling is required for each unit refer to Ene 01 Reduction of energy use and carbon emissions.
Where the development contains conditioned shared or landlord spaces, the area of these spaces, unless otherwise accounted for, should be divided and attributed among the separate units. The proportion of shared areas attributed to each unit must be equivalent to the ratio of each unit as a proportion of the total area of all units.
All units, heating systems, and common areas within the assessed building must be included in the assessment of Ene 01. |
| Retail – shell only – glazing not within scope |
Where a retail building envelope is not complete and glazing will be provided by the future tenant(s), there are two options available:
(KBCN0937) |
|
Methodology
Ene 01 calculation methodology using the standard route (option 1)
The methodology for the EPRINC calculation considers three metrics of modelled building performance when determining the number of credits achieved for this issue. The three metrics are:
- The building's heating and cooling energy demand
- The building's primary energy consumption
- The total resulting CO₂‑eq emissions
These three metrics for the actual modelled building performance are compared against the relevant national building regulations compliant standard (i.e. a baseline) and each is expressed as a percentage improvement. The percentage improvements are then compared against modelled building stock and translated into a ratio of performance for each metric. These ratios are weighted for each metric and added together to determine the overall Energy Performance Ratio (EPRINC).
The calculation is determined using the following performance data:
- Building floor area (m²)
- Reference building heating and cooling energy demand (MJ/m²)
- Actual building heating and cooling energy demand (MJ/m²)
- Reference building primary energy consumption (kWh/m²)
- Actual building primary energy consumption (kWh/m²)
- Reference building emission rate (kg CO₂‑eq/m²)
- Actual building emission rate (kg CO₂‑eq/m²)
The performance data is extracted from annual energy modelling of the building’s specified or designed regulated fixed building services and fabric, as undertaken by an accredited energy assessor or a member of the design team using approved building energy calculation software.
The necessary energy modelling data required to determine building performance is sourced from National Calculation Method compliant energy modelling software, used by the design team to demonstrate building regulation compliance. This data is then entered into the BREEAM Ene 01 calculator to determine the EPRINC and number of credits achieved. The Ene 01 calculator is within the BREEAM assessment scoring and reporting tool, in the Energy section.
The methodology is described in detail in Guidance Note 48, which can be downloaded from the BREEAM website.
Calculating EPR where there are multiple modelling outputs
Where more than one modelling output is produced for a development that is registered as a single assessment, an area-weighted average should be used to calculate the number of credits to be awarded. This does not apply where the ‘similar buildings’ approach is used.
Each of the energy performance outputs from the documents (actual kg CO₂‑eq/m², reference kg CO₂‑eq/m² etc.) must be area-weighted to produce area weighted average values which are entered into the scoring and reporting tool. When applying this method, please include your area-weighting calculations and outputs as supporting evidence.
Prediction of operational energy consumption
The Energy Prediction and Post-occupancy guidance defines a methodology to use for design stage energy modelling and subsequent in-use validation to obtain the Ene 01 credits. The aim of the methodology is to incentivise better understanding of energy modelling techniques and reward more accurate predictions of energy use at early stages to support better design and construction of new buildings.
The suitably qualified energy modeller must model several scenarios creating a range of predicted consumptions, informed by a risk assessment of the building energy uses.
These scenarios will consider:
- Weather
- Operating hours for systems
- Occupancy hours
- Management factors
For more information, please refer to Guidance Note 32 Energy Prediction and Post Occupancy Assessment provided on the BREEAM website. The purpose of this Guidance Note is to describe the energy performance prediction and subsequent post occupancy monitoring methodology. It relates specifically to the prediction of operational energy consumption criteria (four credits) and the post-occupancy stage criteria (two exemplary credits).
Estimating equipment energy demand for building systems or processes
Where credits have been sought for prediction of operational energy consumption, and operational energy modelling has been carried out (criterion 5), the output of this modelling should be used to estimate the equipment energy demand.
Where such outputs are not available, the following guidance applies:
At present there is no standard or national calculation methodology for modelling equipment energy demands in a building. To demonstrate compliance with the ‘exemplary level criteria’ the building’s modelled operational service energy consumption may be used as a proxy for its equipment energy demand, i.e. equipment energy equals 100% of service energy. While not accurate, this approach enables BREEAM to assess and award credits for buildings that meet a proportion of its energy demand for the building can be accurately predicted, this data can be used to determine the percentage of equipment energy demand met via renewable energy sources. Equipment energy demand can be estimated based on metered data from a similar or the same building type with the same unregulated system or process loads or by using the methodology described in CIBSE TM54 'Evaluating operational energy performance of buildings at the design stage', 2013.
Energy design workshop focusing on operational energy performance
The energy design workshop should focus on setting an energy performance target for the building and considering how the intended energy performance of the building will be maintained from design through to occupation and rating measurement. It should also consider how the energy performance of the building will be affected by future weather patterns, changes of use and variations in the expected usage of the building and consider the resilience of building systems.
Post-occupancy stage
Where the exemplary credits are achieved and the post occupancy stage will be followed, the building owner will need to:
- Report energy consumption for the first 12 months of normal occupancy for all relevant end uses.
- Report energy consumption for the first 12 months, broken down into monthly intervals, for all relevant end uses (see Man 05 Aftercare).
- Compare reported energy consumption figures with targets set in criterion 6.
- Identify causes of discrepancies and the remediation actions required.
On-site LZC – whole site shared connection
To be recognised in BREEAM, the on-site low or zero carbon (LZC) technology must have a direct physical connection to the assessed building.
OR
Where the LZC technology is:
- located on the same site,
- is owned and managed by the same organization as the assessed building, and
- where it is impractical to physically connect the assessed building to the system
It is acceptable to allocate the energy generated from this technology to the assessed building proportionally as a calculation of the building’s predicted energy consumption compared to the total energy consumption of the whole site.
To allocate renewable electricity by proportional consumption follow these steps:
- Obtain the total amount of annual renewable electricity generated on-site.
- Exclude all renewable electricity which has been exported to the grid.
- Determine the respective electricity consumption of all buildings on the whole site (predicted for new builds, measured for existing buildings).
Where consumption data is missing, renewable electricity must not be allocated to the assessed building. In this case, it must be assumed that all electricity consumed is sourced from the grid.
Evidence
| Criteria | Interim design stage | Final post-construction stage |
|---|---|---|
| 1 |
A copy of the report and output documents generated by the approved software for the assessed building at the design stage illustrating:
AND Where appropriate, a letter from the person carrying out the modelling confirming:
The output documents must be based on the 'as designed' stage of analysis. |
Third party documentation, as follows:
|
|
A completed copy of Checklist A5. The relevant specification clauses confirming details of compliance with each requirement. A letter from the building services engineer confirming items selected from the checklist are appropriate for the building type and local climatic conditions. |
As-built drawings and specification demonstrating compliance with the criteria. | |
| 4 | Workshop minutes, agreed outcomes. | As per interim design stage. |
| 5–7 | Predicted energy consumption values, design assumptions, input data and risk assessments reported as detailed in the Energy Prediction and Post-occupancy guidance available from the BREEAM website. Confirmation of suitably qualified energy modeller’s qualifications and experience. | As per interim design stage. Where changes to design assumptions and input data have occurred at post-construction stage, the energy modelling should be re-run to consider those changes. |
| 8–10 |
A copy of a report, calculations or outputs from the manufacturer, supplier, engineer or software modelling confirming:
|
As required for criteria 1–3 and as per interim design stage. |
| 11–13 |
The client’s commitment to proceed to the post occupancy stage and report the energy consumption. Where the energy model is retained by the building owner or third party, details of the organisation and specific references for the energy model. |
As per interim design stage. |
Additional information
Relevant definitions
- Actual building emission rate
- This is the predicted building’s CO₂ emission rate that is expressed as kg CO₂‑eq/m²/year and calculated by the approved building energy calculation software.
- Approved building energy calculation software
- Software approved for the purpose of demonstrating compliance with the energy efficiency and carbon emission requirements of the building regulations (and in turn compliance with the Energy Performance of Buildings Directive, EPBD). In countries with an existing National Calculation Methodology (NCM), the tools approved for use under the NCM can be approved as building energy modelling software automatically. These will be confirmed by BRE as part of the Approved standards and weightings list process. Where the design team wishes to use an alternative modelling software package for assessing this issue, please request the Approval for Energy Software from BRE Global to determine whether the software package meets the minimum requirements in terms of the minimum capabilities, design features and testing results. Where those minimum requirements are met, approval from BRE Global will be required (via the Approved standards and weightings list process) before the package can be used for the purposes of demonstrating compliance with Ene 01.
- Building regulations
- Building regulations set standards for the design and construction of buildings to ensure the safety and health of people in or about those buildings. They also include requirements to ensure that fuel and power is conserved and facilities are provided for people, including those with disabilities, to access and move around inside buildings.
- Direct physical connection to the building
- To qualify for this issue, the LZC technology must have a direct connection to the building (for electricity, this is often referred to as private wire arrangement). If electricity is generated which is surplus to the instantaneous demand of the building, this electricity may be fed back to the national grid. The carbon benefit associated with any electricity fed into the grid in this manner can only be allocated against an individual installation or building. In cases where a building is supplied by a communal installation, no carbon benefit can be allocated to buildings which are not connected to the communal installation.
- Dynamic simulation model (DSM)
- A software tool that models energy inputs and outputs for different types of buildings over time.
- Energy demand
- The building energy provided for end uses in the building such as space heating, hot water, space cooling, lighting, fan power and pump power. Energy demands are the same as room loads. One of the outputs from the modelling is for heating and cooling energy demand only, not for any other building energy uses. Heating and cooling energy demands are influenced by factors including building fabric heat loss, air permeability, glazing and shading.
- Energy Performance Ratio for International New Construction (EPRINC)
- A metric that is unique to BREEAM and calculated by the BREEAM Ene 01 calculator tool using outputs from the approved building energy calculation software. It is a ratio that defines the performance of an assessed building in terms of its service energy demand, primary energy consumption, and CO₂‑eq emissions. This measure of performance is used to determine the number of Ene 01 credits a building achieves in the BREEAM assessment. A description of how the (EPRINC) is defined and calculated is provided in the Methodology.
- Equipment energy
- Building energy consumption resulting from systems or processes within the building, other than Service energy (see definition below). This may include energy consumption from systems integral to the building and its operation, e.g. lifts, escalators, refrigeration systems, ducted fume cupboards; or energy consumption from operational-related equipment, e.g. servers, printers, computers, mobile fume cupboards, cooking and other appliances.
- Green fit-out agreement
-
A green fit-out agreement is a formal, legally binding agreement between a building developer or owner and their tenants. As such, a green fit-out agreement (or ‘green’ clauses or sections in a lease agreement) can be evidence for demonstrating compliance with the relevant BREEAM issue criteria at the interim design and final post-construction stages of assessment. The agreement should refer to the specification requirements or levels claimed and defined in this technical manual.
BREEAM aims to encourage a mutually beneficial relationship between the shell and core developer or owner of a building and its future tenants to ensure the fully fitted operational building achieves performance against the highest possible environmental standards. When an agreement is provided as evidence and it commits the tenant’s fit-out to meet the criteria of this BREEAM issue, credits are available to be awarded.
- National Calculation Method (NCM)
- A National Calculation Methodology (NCM) enables quantification of building operational energy consumption and CO₂‑eq emissions resulting from building services or systems and fabric performance. Within Europe, a country’s NCM is the methodology used for demonstrating compliance with the EU Energy Performance of Buildings Directive.
- Near-site LZC
- A recognised LZC source of energy generation located near to the site of the assessed building. The source is most likely to be providing energy for all or part of a local community of buildings, including the assessed building, e.g. decentralised energy generation linked to a community heat network or renewable electricity sources connected via a private wire arrangement.
- On-site LZC
- A recognised LZC source of energy generation which is located on the same site as the assessed building.
- Primary energy consumption
- This measures the primary energy content of delivered fuel or other energy sources. It takes account of the energy associated with fuel production, energy transformation (e.g. electricity generation) and distribution processes, including losses, in addition to the inherent energy content of the fuel or energy source.
- Recognised low or zero carbon (LZC) technologies
-
Technologies eligible to contribute to achieving the requirements of this issue must use energy from the following sources:
- Wind
- Solar radiation (solar thermal and solar photovoltaic)
- Geothermal and hydrothermal energy sources
- Hydropower
- Biomass from waste and biofuels derived from second generation biomass feedstock or waste sources, including landfill gas and sewage treatment gas (see CN5.7 and CN5.8 in Ene 04 Low carbon design)
- Waste heat (see CN5.4 in Ene 04 Low carbon design)
- Heat or electricity from waste incineration (see CN5.6 in Ene 04 Low carbon design)
- Reference building
- A hypothetical building of the same size, shape, orientation and shading as the actual building, with the same activities, zoning and system types and exposed to the same weather data, but with predefined specified properties for the building fabric, fittings and services.
- Reference building emission rate
- The reference building emission rate is the minimum energy performance requirement for a new building (kg CO₂‑eq/m²/year) as defined by local building regulations or international standards. This is calculated in accordance with approved building energy calculation software and is expressed in terms of the mass of CO₂‑eq emitted per year per square metre of total useful floor area of the building (kg CO₂‑eq/m²/year).
- Service energy
- Building energy consumption resulting from fixed internal lighting systems, fixed heating or cooling, hot water service or mechanical ventilation.
- Suitably qualified energy modelling engineer or accredited professional
-
An individual who has:
- A minimum of 3 years relevant experience in building energy modelling within the last 5 years.
- A recognised qualification or chartership such as a building services engineer or building energy modelling engineer.
- Broad expertise to cover all required technical aspects, guaranteeing that the data entry in the energy model is appropriate and the results reflect the actual performance of the building.
This can be someone operating as a sole trader or employed by public or private enterprise bodies.
Other information
Energy model submitted to BRE
The energy model will be submitted to BRE to assist with the quality assurance of the post occupancy stage and the ongoing development of BREEAM. BRE will keep the models secure in our systems and will only release them if required for the post-occupancy stage assessment.
Approved software submission
In countries with an existing National Calculation Methodology (NCM), the tool(s) approved for use under the NCM can be used as approved building energy calculation software without our prior approval, provided that the software conforms the following modelling requirements as set out in Directive 2002/91/EC on the energy performance of buildings (16 December 2002):
- Thermal characteristics of the building (shell and internal partitions, etc.) which may also include air-tightness;
- Heating installation and hot water supply, including their insulation characteristics;
- Air-conditioning installation;
- Ventilation;
- Built-in lighting installation;
- Position and orientation of buildings, including outdoor climate;
- Passive solar systems and solar protection;
- Natural ventilation;
- Indoor climatic conditions, including the designed indoor climate.
Where the design team wishes to use an alternative modelling software package, the assessor should first check the Approved Standards and Weightings List to see if the software is listed there. If the software cannot be found in the ASWL, please download, and fill out the Ene 01 Approval for Energy Software form from BREEAM Projects and submit this to the technical team via the query webform on BREEAM Projects, along with the appropriate evidence.