P34-35 Electric Heating New 3:Layout 1 27/10/2021 17:07 Page 34 ElectricHeating
Heating systems &the environment
The UK was one of the first major world economies to set a ‘net-zero’ and legally binding goal for carbon emission reduction by 2050. As part of the plan to achieve this ambitious target the Future Homes Standard was launched to help reduce carbon emissions from housing. Here, manufacturer of electric underfloor heating ThermoSphere shares the results of its recent report on the carbon impact of multiple domestic heating systems, using SAP 2012 and SAP 10 calculations.
T
he Future Homes Standard aims to ensure that by 2025 all new build homes would include the highest energy efficient standards which will incorporate low-carbon heating
alternatives that would help produce between 75% and 80% less carbon than those built to existing regulations. One of the proposals to help achieve this is banning gas boilers in new builds and the new rules being weaved into Part L of the Building Regulations. To help the industry adapt to the new proposed rules for 2025, the
What is SAP?
First published in 1993, SAP stands for Standard Assessment Procedure which is the calculation methodology set out by the Government to calculate the energy performance of dwellings and are a requirement of the Building Regulations for new builds.
SAP calculations:
l Help determine energy related running costs l Are used for producing Energy Performance Certificates (EPC) l Show compliance with Part L of the Building Regulations
Without gaining a pass on SAP calculations, a property can‘t be sold or
rented. In fact, building control will not provide final sign-off on any development if it doesn‘t pass. Additionally, EPC certificates (rated A to G)
Government laid out interim proposals. Unfortunately, these have been delayed because of the coronavirus pandemic therefore it’s anticipated they will come into effect in 2022 instead. Decarbonisation of heating in the UK is vital because 14% - 16% of
greenhouse gas emissions comes from the way we heat homes. Using both SAP 2012 and SAP 10 calculations ThermoSphere identified the best and worst heating systems based on their carbon emission rate within a new build property.
are required for both new builds, extensions or conversions and SAP calculations are needed to produce them. If the EPC rating comes back rated equal to or lower than F, then it is illegal to rent out the property.
SAP 10 is an update to the existing SAP calculation methodology
(SAP 2012). Recently, SAP 10.2 has been published which is a ‘near- complete’ edition of the version that is expected to take effect in the middle of 2022.
The changes SAP 10 includes are:
l The CO2 emission factor of electricity has been reduced by over a half l The carbon footprint of electric heating (over gas) will be favourable and will make it easier to achieve compliance using electric heating
l SAP 10 calculations reflect the increased use of green energy within the energy grid such as that produced by wind farms
Comparing Heating Systems Using SAP 2012 and SAP 10 Results
34 | electrical wholesalerNovember 2021
ewnews.co.uk
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