§ Mr. DobsonTo ask the Secretary of State for Energy, pursuant to his answer of 5 June,Official Report, column 409, (a) who estimated that 5.5 TWh of electricity could be saved, (b) whether this estimate has been published, (c) which insulation measures were included and (d) what other estimates made during the last two years on potential savings from better insulation are known to his Department.
§ Mr. Peter MorrisonThe estimate was derived from a publication by the Building Research Establishment (BRE) entitled "Energy Use in Buildings and Carbon Dioxide Emissions"—BR 170 HMSO ISBN 085125 4365, £25. It is estimated in table 11 at page 36 that cost-effective insulation measures applied to houses in the United Kingdom would save 23.3 PJ of electricity corresponding to 6.5 TWh. The figure has been scaled down to 5.5 TWh to cover England and Wales only.
The recommended cost-effective insulation measures covered all existing houses and assumed that:
- (i)80 per cent. of all houses with cavity walls would be insulated.
- (ii) Lofts with less or equal to 25mm insulation would be insulated up to 150mm.
- (iii) All houses would be draughtproofed.
- (iv) All hot water tanks with less than 50mm insulation would be insulated up to 80mm.
- (v) All windows would be double-glazed when the existing window frames need to be replaced.
My right hon. Friend the Secretary of State will be writing to the hon. Member and will supply a list of publications, produced over the past two years, covering the potential for energy saving through better insulation of the housing stock.
§ Mr. DobsonTo ask the Secretary of State for Energy what was the number of community insulation projects and the number of participant workers and trainees at end-year in 1987, 1988 and 1989 and at the latest available date for each region, Wales, Scotland and Great Britain as a whole.
§ Mr. Peter MorrisonThe figures requested in respect of 1987 and 1989 are as follows:
Number of draughtproofing jobs completed 1987 1989 East Midlands 10,236 10,245 London 7,839 1,353 North East 13,867 9,983 North West 16,125 22,230 Scotland 30,349 37,154 South East 6,728 4,942 South West 9,489 4,368 Wales 15,017 13,371 West Midlands 11,957 12,051 Yorkshire and Humberside 17,100 15,186 Total 138,707 130,883 Neighbourhood Energy Action advises that equivalent information in respect of 1988 is not available, and that reliable information in respect of early months of 1990 for comparison with the same periods in previous years is not yet available.
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§ Mr. DobsonTo ask the Secretary of State for Energy what was the number of draughtproofing jobs completed so far in the current year and completed in the equivalent periods of 1987, 1988 and 1989 for each region, Wales, Scotland and Great Britain as a whole; and what were the full-year figures for 1987, 1988 and 1989.
§ Mr. Peter MorrisonAvailable information in respect of the last three complete years is as follows:
Number of operating projects at period end 1987 1988 1989 East Midlands 36 25 28 London 34 8 14 North East 25 17 18 North West 48 41 45 Scotland 66 30 77 South East 47 21 23 South West 34 15 16 Wales 47 27 36 West Midlands 50 22 26 Yorkshire and Humberside 34 22 24 Total 421 228 307
Number of participating workers/trainees at period end 1987 1989 East Midlands 505 271 London 617 31 North East 493 253 North West 1,051 672 Scotland 978 780 South East 566 116 South West 534 190 Wales 1,047 335 West Midlands 775 314 Yorkshire and Humberside 679 353 Total 7,245 3,315 Neighbourhood Energy Action advises that information on numbers of participating workers/trainees at end 1988 is not available, and that reliable information in respect of the early months of 1990 for comparison with the same period in previous years is not yet available.
§ Mr. DobsonTo ask the Secretary of State for Energy (1) what was the spending on the community insulation programme in each year from 1983–84 and including estimated spending in 1989–90 for(a) the London borough of Camden and (b) the London borough of Islington;
(2) what was the number of community insulation projects and the number of participant workers and trainees at end-year 1987, 1988 and 1989 and at the latest available date for (a) the London borough of Camden and (b) the London borough of Islington.
§ Mr. Peter MorrisonThere are no community insulation projects currently operating in the London boroughs of Camden and Islington. Detailed information on projects under the community programme which served those areas prior to 1988 is not available.