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Published byEsther Gibson Modified over 9 years ago
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Interim findings from the Scottish Renewables Heating Pilot Paul Tyrer, Scottish Govt
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2 The Pilot £1m funding over two years. Managed by EST. A two year pilot study, March 06 to May 08. 87 Installations in total – 56 in social rent, 31 owner- occupied. Main technologies were GSHP and ASHP. Installations began in Dec 2006, finished in January 2008. Evaluation being undertaken simultaneously by Clearplan UK.
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3 Aims of the Evaluation 1.Explore participants’ experiences of and attitudes towards using the renewable technologies installed; 2.Evaluate the impact of using renewable based systems on fuel poverty; 3.Assess the value for money of mainstreaming particular renewable-based systems into the Central Heating Programme.
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4 Broad Methods Regular interviews with householders Modelling using NHER software Assessment of actual fuel costs Data-loggers to monitor warmth levels Cost-benefit analysis
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5 Installation Costs Installation costs were higher than anticipated; Ground source heat pumps cost £16,691 fully installed; Air-source heat pumps cost £8,168; In comparison, average CHP grant is £3,343; Renewables-based systems were then more expensive than comparable systems, though costs have reduced since Phase 1.
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6 Householder Satisfaction Early findings suggest 9 in 10 very or fairly satisfied with their new system; 9 in 10 found the new system easy to use; Almost half reported one or more problems with installation
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7 Quality of Life improvements No more ‘hard work’ to heat the home; Able to use more rooms in the home; Improved social life; Reported reduction in damp; Self-reported improvements in health and mobility.
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8 Energy Efficiency Improvements Nearly all properties prior to installation scored lower than the national average for energy efficiency; Renewables plus WD improved NHER scores in all households. No property was rated as NHER poor after installation.
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9 Modelled impacts on fuel poverty Before improvements Social sector households spent on average 11% of household income to maintain a satisfactory heating regime; After improvements, on average, households spent 8% of income, with the installation of renewables.
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10 Carbon Savings Mean carbon emissions (tonnes p.a.): Without improvements 9.4 Electric Storage (+ WD) 6.3 Oil Central heating (+ WD) 4.8 Renewables (+ WD) 3.6
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11 Conclusions Positive, so far, on energy-efficiency, impacts on fuel poverty and carbon savings; Householders positive on using the systems; Costs of GSHPs very high; ASHPs less expensive but still more costly than comparator systems, e.g. oil / electric storage.
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12 Next steps All systems now installed; Final questionnaires going out shortly; Final report due in Summer 08; Conclusions and recommendations to be presented to Ministers for consideration.
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