Ene 01 - Energy and carbon performance for regulated energy uses

Assessment of multiple buildings within a single BREEAM assessment - KBCN1836

Ene01, Ene02 and Wat01, which use area-weighted performance scales, must be assessed using the methodology set out below where multiple buildings are included within the scope of a single BREEAM assessment, including where: • the Similar Buildings approach is applied, in accordance with Section 4 of GN20; or • Separate buildings with a single overarching function are located on the same site, in accordance with Section 6 of GN20 (e.g. a principal building with one or more ancillary or supporting buildings). Ene01 For UK NC projects, energy models (BRUKL files) must be uploaded for each building included within the assessment. For International NC projects, the assessor must enter floor area-weighted average values for the relevant energy performance metrics for both the actual building(s) and the reference building(s), covering all buildings and applicable building uses included in the assessment. Ene02 All buildings included within the assessment must be modelled in accordance with the methodology. The energy performance score must be calculated using floor area-weighted metrics covering all buildings, and compared against a benchmark derived from a floor area weighted average of all building types included within the assessment. Wat01 For Wat01, the assessor must enter details for all water-using components across all buildings included within the assessment. The Wat01 benchmark is determined using a floor area-weighted occupancy by building type, covering all buildings within scope of the BREEAM assessment.

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Credit requirement for an “Excellent” or “Outstanding” – Connection to district heating is a condition of Planning - KBCN1766

This KBCN applies when a project is required to connect to a district heating system as a condition of planning and this is preventing the project from achieving the number of credits required for a BREEAM Excellent or Outstanding rating. In these situations, an additional brukl.inp file must be generated for the actual building but with an alternative heating system, e.g., a heat pump, that demonstrates that the minimum standard would be achieved if the building didn’t have to connect to district heating. A technical query must be raised citing this KBCN and stating the minimum standard being sought with two brukl.inp file attached, one for the actual building with district heating and one with the alternative with an alternative heating system. Where the brukl.inp documents demonstrate that requirement to district heating is the only thing preventing the project from achieving the required number of credits, the technical team will confirm and arrange for the minimum standard to be waived. However, the number of credits awarded must be based on the building connected to district heating.

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GN52 UK Ene 01 calculation methodology guidance - KBCN1750

Latest version: v0.0, July 2025 Guidance Note 52 (GN52) gives background information on the methodology for determining the number of credits achieved for energy performance under the Ene 01 assessment issue for BREEAM UK NC V7. The Ene 01 methodology uses a triple metric approach that addresses energy demand for heating and cooling, primary energy consumption, and carbon dioxide emissions. The aim of using this approach is to minimise the energy consumption and carbon emissions from regulated energy uses and to maximise the use of low carbon energy sources. Download Guidance Note 52 View all Guidance Notes on BREEAM Projects (licensed assessors only)

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