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Energy Rating of Dwellings

Volume 450: debated on Wednesday 11 October 2006

To ask the Secretary of State for Environment, Food and Rural Affairs how the fuel prices per kWh in table 12 of the Standard Assessment Procedure for Energy Rating of Dwellings 2005 are derived; and how the figures are kept updated to reflect variations in the relative prices of fuels. (91978)

The fuel prices in table 12 of the Standard Assessment Procedure for Energy Rating of Dwellings 2005 are derived from information produced at six-monthly intervals by Salkent (now Sutherland's Tables). The data given for different regions of the UK are weighted according to the population of the region, and the price of each fuel is averaged over a three-year period (to smooth the effect of short-term variations).

The prices in table 12 are updated when a new edition of Standard Assessment Procedure (SAP) is prepared. The calculation of the SAP rating includes a deflator term to adjust for general inflation in fuel prices, thus an increase in price of say 10 per cent. in all fuels would have no effect on the SAP ratings following recalculation of the prices and the deflator term.