Assumptions: Demand Reduction

Assumptions

The Assumptions made to produce the demand reduction output

• Assumed area for different types of dwellings
• All Flats – 71m²
• Detached, Semi Detached and Mid terraced housing – 94m²
• 100% energy efficient lighting in all dwellings
• All dwellings have the same insulation and boilers, not the case in real life
• No cavity wall insulation in dwellings
• All buildings, apart from the modern flats, are all pre 1981
• The EDEM upgrade costs are suitable for 2010
• EDEM has gas costs as 10p for electricity per unit and 2.5p per unit for gas consumption
• Calculations carried out for 13p and 3.8p for electricity and gas respectively
• Medium boiler and standard insulation in dwellings as realistic base case matches roughly to 2007 energy consumption.
• All pre 1981 dwellings have high ceilings bar council flats
• With Social housing, only insulation modifications made as heating modifications incorporates biomass plant output.
• EDEM calculations carried for typical climate in Scotland
• All modifications in sensitivity study has tight airtightness