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Monitoring Results – Ethelred Estate

Monitoring Results – Ethelred Estate. Chris Dunham, Carbon Descent 13 th July 2010. Eco Buildings - Retrofit. Monitoring. Socio-economics - resident surveys Logging temperature and electricity demand profiles in 72 flats – half of which received energy advice Still to analyse:

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Monitoring Results – Ethelred Estate

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  1. Monitoring Results – Ethelred Estate Chris Dunham, Carbon Descent 13th July 2010

  2. Eco Buildings - Retrofit

  3. Monitoring • Socio-economics - resident surveys • Logging temperature and electricity demand profiles in 72 flats – half of which received energy advice • Still to analyse: • Logging electricity supply to blocks • Boilerhouse gas use • CHP • PV

  4. Resident Surveys • Doorstep survey • Before and “After” 2009 and 2011 • Randomly selected sample of 79 (of 297 flats) • 29 questions

  5. Satisfaction

  6. Comfort

  7. Comfort • Can't keep flat a comfortable temperature as there is a problem with cooling - can't open the windows enough to get a breeze as there are still workmen outside and it is dusty. • Winter is better but summer is worse. Hard to ventilate during hot weather - bought two fans. • Problem with thermostat x 2 • Heating not working

  8. Knowledge

  9. Knowledge

  10. Current Lifestyle

  11. Current Lifestyle

  12. In Summary • More people are certain that they know less • People are doing roughly the same or less about it • More people are happy with what they do • Broadly in line with the national picture • High level of satisfaction with the refurbishment and thermal comfort standards

  13. Behaviour Change • 2 groups: test & control - Feb-June 2011 • Both groups received logging equip (without displays) – temp and electricity • Test group received energy advice • Identical distribution of bedrooms and total occupants in each group • Almost identical cooking fuels/appliances • Similar distribution between 3 blocks (which are identical except for height) • 2 doorsteppers – one giving advice – one installing meters – around 40mins per flat

  14. Loggers

  15. Cost of Advice • £1,780 (excluding kit) • £24 per flat • Electricity saving 7,116kWh = 3.6tonnes CO2 • Gas saving? 11tonnes CO2 • No persistence £435 per tonne C • 4 years £54 per tonne C

  16. Conclusions • Controls need clear labelling/instructions • Comfort temperatures are much higher than generally assumed in modelling – implications for plant sizing • Energy advice seems to show a small effect on demand temperatures even in the absence of financial incentives and on electricity demand • This effect either decreases with time relatively quickly OR has a seasonal relationship • Cost effectiveness depends on persistence • Huge scope for behaviour change in comfort temperatures

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