Publicly available statements calculated and owned by the Energy Saving Trust demonstrate how energy-saving measures can help reduce energy bills in homes across the UK.
All savings figures are based on a typical three-bedroom house heated by gas, with an average boiler efficiency of 78%. Actual savings for a particular household will vary depending on the size and construction of the house, and the way the occupants use the heating system and appliances.
- Insulating a loft with no insulation at all with 270mm of new insulation could save up to £175 and 720kg of carbon dioxide a year.
- Topping up your loft insulation from 100mm to 270mm could save around £25 and 110kg of carbon dioxide a year.
- Cavity wall insulation could save up to £135 and 550kg of carbon dioxide a year.
- Internal solid wall insulation can save around £445 and 1.8 tonnes of carbon dioxide a year.
- External solid wall insulation can save around £475 and 1.9 tonnes of carbon dioxide a year.
- Draught-proofing windows and doors can save around £35 and 150kg of carbon dioxide a year.
- Energy Saving Trust Recommended double glazing can save around £165 and 680kg of carbon dioxide a year.
To find out more visit www.energysavingtrust.org.uk.
* Correct as of October 2011 and valid for 2011–12. Calculations are based on:
– Installation by a professional installer.
– All the grants and offers available from the government, local authorities and energy suppliers
– The lower rate of VAT you get on materials, equipment, and labour, when you have energy-saving work done to your house. ( Details are at the HMRC website.)
– Comfort factor
The savings are based on the figures used for the government’s Carbon Emissions Reduction Target (CERT). N.B. Calculations differ for Northern Ireland.