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- Micro-wind turbines in urban environments - an assessment
- R Phillips, P Blackmore, J Anderson, M Clift, A Aguilo-Rullan and S Pester
- Nov 30, 2007
- Stock code
There is little experience of the operation of small wind turbines mounted on domestic buildings in urban environments and little data on their performance in terms of power generation, service life and maintenance.
This BRE Trust-finded study shows that, in addition to the initial embodied carbon and efficiency of the turbine, the payback period is highly sensitive to local wind conditions, transport costs, maintenance requirements and the life of the turbine. It reveals large variations in output of micro-wind turbines in a city such as Manchester and a windy location such as Wick in Scotland, and between the outskirts and town centres in windy locations.
In windy locations, micro-wind turbines can generate enough energy to pay back their carbon emissions within a few months or years but in large urban areas, micro-wind turbines may never pay back their carbon emissions. Life cycle costing suggests that, even in favourable urban locations, financial payback is unlikely for all but the most durable, efficient and low maintenance turbines.
This work confirms the need for a more rigorous method for estimating the electricity generated from building-mounted micro-wind turbines and for research and innovation in technology, planning and urban design to maximise the effectiveness of the turbine installations. 47 pages.
- Provides a rigorous analysis of all the factors that influence the power that small wind turbines can generate in urban areas
- Studies the whole life costs and carbon emission costs of micro-wind turbines
- Case studies for three locations - Manchester, Wick and Portsmouth
2 Inventory analysis of micro-wind turbine systems
3 Estimation of typical urban wind resource
- University of Bath LCA data
- System boundaries
- Comparison with LCA data for other turbines
- Installation, maintenance and operation of the micro-wind systems
4 Electricity generation by building-mounted wind turbines in typical urban scenarios
- Wind resource - adjustment factors for urban environments
5 CO2 payback for domestic micro-wind turbines in urban environments
- Methodology for the electricity calculation
6 Life cycle costs and financial payback for micro-wind turbines
7 Discussion and conclusions
- Introduction to life cycle costing
- What costs are taken into account when undertaking LCC for a wind turbine?
8 Further work
Other publications that may be of interest
Siting micro-wind turbines on house roofs
Building-mounted micro-wind turbines on high-rise and commercial buildings
- FB17, wind power, renewable energy, microturbines, costs, life cycle analysis, LCA.
- A pdf version of this item is also available