A feasibility study to evaluate the potential replication of an energy positive house in the UK

X Li,P Jones,E Coma Bassas,J Patterson

doi:10.1088/1755-1315/329/1/012049

X Li, P Jones + Show 2 more

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https://doi.org/10.1088/1755-1315/329/1/012049

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Abstract

This paper presents an evaluation of the economic and technical feasibility of a renewable-led low carbon house in the UK. A holistic systems-based approach to achieve energy positive house has been taken. Long-term economic and technical feasibility analysis have been carried out based on a validated thermal and energy model of the house. The economic analysis employs the Return on Investment (ROI) method and considers changes to government financial support and technology progress over time. Results show that the extra investment on the house, compared with that for building a standard social house of similar size, can be paid back within the system lifespan under both the old Feed-in Tariff and its proposed replacement with reduced financial support. Variants examined in the technical feasibility analysis include housing type, orientation and location. Results show that the house can be replicated to achieve an energy positive performance for all variant combinations. Among the variants, location has the highest impact on building performance including annual electricity import, CO2 emission and electricity self-sufficient ratio, with South UK performing better than North UK. This implies that more efficient or advanced technologies would be needed to achieve similar building or system performance in areas of unfavourable climate. The outcome of the research has demonstrated the affordability of the energy positive house, and the technical feasibility of its replication with different housing types, orientations and locations in the UK. This study supports the wide scale replication of this affordable systems-based approach in domestic building design and construction when incorporating appropriate technologies.

Highlights

There have been worldwide efforts to employ renewable energy systems for tackling the fuel poverty issue, either at a community scale [1] or for single domestic building [2]
This paper has presented a long-term economic analysis and a technical feasibility analysis of the SOLCER house, a renewable-led energy-positive house in the UK
Analyses have been carried out based on a validated thermal and energy model of the SOLCER house, taking into account the changing of financial support and technology improvements over time

Summary

Introduction

There have been worldwide efforts to employ renewable energy systems for tackling the fuel poverty issue, either at a community scale [1] or for single domestic building [2]. In the UK, renewable technologies have been employed since the 1980s at community scale, for example in the Linford Solar Court (1979), the Rainbow Housing project (1980), the Giffard Park Housing (1984), the BedZed Development (2001), the Hockerton Housing (2002) or the Lammas Community (2009). At the single building scale, with innovative house projects such as the Bradville Solar House (1972), the projects presented in the Homeworld 81 exhibition, the House for the future (2000) or the Ty Unnos (2011).

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