The first six houses built by housebuilding specialist Etopia have been rated as better than zero carbon in terms of energy efficiency.
The buildings in Northamptonshire achieved an Energy Performance Certificate (EPC) score of 103 out of 100 on average, using the Government’s Standard Assessment Procedure (SAP) for energy efficiency.
A report by the Building Research Establishment based on 2001 data from the English Housing Condition Survey has found the average SAP score of English homes is just 50.6.
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