Technology
How we model the energy efficiency and carbon output of our homes is changing
WHY THE CHANGE? Tere are some big changes coming to the way we measure the energy efficiency and carbon emissions of UK homes. SAP is the national calculation methodology used for everything from building regulations compliance through to Energy Performance Certificates, and the new Social Housing Decarbonisation Fund. Te last major revision to SAP was in 2014,
and this year the new version – SAP 10 – is being released. Tese changes have been driven by homes become more energy efficient due to insulation and air tightness. Other energy demands such as hot water, lighting and renewables will account for a higher percentage of energy use and therefore need to be modelled more accurately. In addition, unless SAP takes account of new technologies, it will suppress their take up.
WHEN’S IT COMING? Te new SAP will first make its appearance for new build homes in the new Part L of the building
58 | HMMFebruary/March 2022 |
www.housingmmonline.co.uk HMM02_Sava_FPAdv.indd 1
regulations in England, due Summer 2022. Exactly how it will be implemented in the RdSAP calculation used for existing homes is still being finalised, but we expect the calculations to be introduced in late 2022 / early 2023.
CARBON FROM ELECTRICITY IS DOWN 75% Te most significant impact for those modelling their carbon emissions is an updating to the carbon factors for electricity with SAP 10 using a factor of just 0.136 kg/kWh compared to the current 0.519 kg. Tis reflects the decarbonisation of the UK electricity grid and will make a significant reduction in carbon when modelling homes using any form of electrically driven heating system.
FIND OUT MORE Check out our range of free technical webinars including SAP 10 and many other issues facing housing providers at
www.sava.co.uk/soſtware/ technical-webinars/
14/02/2022 14:32
ABOUT SAVA Sava provides analysis soſtware and consultancy to help housing providers gain a better understanding of their housing stock and carbon zero objectives. Sava established the UK’s first energy rating scheme over 30 years ago and its soſtware is now used by over 200 social housing providers.
01908 442100
www.sava.co.uk
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60
