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FS35 - Implications of installation of Solar Photovoltaic Panels on Properties of Fairfield Housing Co-operativeWritten by: CIC Start Online
"Implications of installation of Solar Photovoltaic Panels on Properties of Fairfield Housing Co-operative" by Edinburgh Napier University and Fairfield Co-Operative
In October 2011 FHC applied for the approval of a feasibility study to CIC-Start Online to explore the potential of a 10 kW-peak PV facility for one of their Fairfield based properties. As a result two Scottish higher education institutions were engaged to complete the above task, i.e. Glasgow School of Art and Edinburgh Napier University. This report presents the results of those findings.
It is worth mentioning that FHC have obtained a quote from a local PV installer, Sidey who have offered a 41-module installed facility for a total price of £26,316, including 5% VAT. The present study proposes a triple-string installation with 14 modules in each string. The total number of modules thus required would be 42. It as been assumed that the Sidey price quote would remain unchanged.
Following the initial shading analysis assessment of three potential properties located in close proximity to FHC office, it was found that the most ideal structure was the roof of the ‘green’ building as it:
- faced 10-degree west of south
- had a roof slope with the optimally desired value of 45-degree
- had only one central chimney of a short height
The present study proposes a triple-string installation with 14 modules in each string. The total number of modules thus required would be 42. It is also recommended that three, 4kW inverters are used, one for each string. This will ensure a better handling of the resource and also any shading issues if they arise.
Detailed modelling of the proposed PV plant indicated that:
- The total investment of £26,316 would be returned at the end of 7 years provided the modules are kept in a clean and pristine state. However, bearing in mind the build-up of dust cover on the modules and any likely bird dropping and grime build-up, it is likely that around 10 years would be needed to effectively payback the cash investment.
- It was also found that the embodied energy of the proposed facility will be paid back within 7 years.
- The carbon dioxide emissions associated with the proposed facility is estimated as 50 grams of CO2/kWh of delivered electricity. This compares much more favourably than the figure for UK grid with a figure of 516 grams.
Key words: post-1919 building, domestic buildings, photovoltaic panels, carbon footprint, cost calculator
Held on 13th April 2012:
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