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Energy efficiency in new and existing buildings<br>Comparative costs and CO<sub>2</sub> savings

Energy efficiency in new and existing buildings
Comparative costs and CO2 savings

by F MacKenzie, C Pout, L Shorrock, A Matthews and J Henderson (18-Aug-2010)


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Book Description


This BRE Trust report considers the relative impact on UK CO2 savings targets of constructing new zero-carbon buildings compared to improving the energy efficiency of the existing stock. Carbon dioxide emissions from buildings accounted for around 40% of total UK CO2 emissions in 2006. To achieve the government’s challenging target of reducing greenhouse gas emissions by 80% by 2050, improving the energy efficiency of buildings - both new and existing - will clearly be vital. This report uses existing data to explore the extent to which improving the energy efficiency of the existing building stock would be a more cost-effective route for achieving CO2 savings than constructing new buildings to the higher levels of energy performance required to meet low- and zero-carbon targets.


Executive summary

1 Background
Zero-carbon non-domestic buildings

2 Introduction

3 Assessing cost effectiveness
Net annual cost
Net present value

4 Domestic buildings
Age profile of the domestic building stock
Existing domestic buildings
New domestic buildings
Conclusions and recommendations: domestic buildings

5 Non-domestic buildings
Non-domestic building energy and emissions model
Age profile of the non-domestic building stock
Existing non-domestic buildings
New non-domestic buildings
Conclusions and recommendations: non-domestic buildings

6 References

A4, 32 pages.

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