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Ene 1

You may have seen reference to Ene 1 perhaps within a planning condition or building regs requirement.

The term relates to the Code For Sustainable Homes, but some authorities may also require a certain level of Ene 1 performance even when a Code assessment is not sought.

So what is Ene 1 all about?

Ene 1 is the first and most important category within the Code – the energy category. SAP Calculations are used to determine a Dwelling Emission Rate (DER) – the amount of CO2 the proposed dwelling will emit.

Ene 1Based on this an allocation of credits can be issued – credits which when combined with all the other categories will determine the Code level of the development.

If you are asked to achieve code level 4 for Ene 1, then you are being asked to reach a standard of energy performance equal to that of a code 4 build. The DER figure from SAP must equal or better a 25% improvement over the TER (Target Emissions Rate). In normal circumstances the DER only needs to equal the TER to gain a pass.

Still confused?! Just give us a call and we can talk you through your development, what Ene 1 means to you, and how we can help!

Need to discuss your Code project?

Just give us a call on [xyz-ihs snippet=”Dorset-Phone-Number”] or send us your enquiry – we’ll get straight back to you.


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"BE are fantastic building energy assessors, with competency across many areas. We have found them very useful on small and large projects. With the larger projects they can provide a range of assessments with one point of contact. We submitted a planning application for 224 residential apartments for a site in Luton. BE provided the flood, acoustic, heat loss and SUDS reports. The scheme was consented and reports were excellent. We have found them to been frank and honest with their advice. They are also lovely people to work with… which is very important."

Adam Covell
- ECA Architecture

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