We have from the outset been keen to install solar PV. Cathedral House has various flat roofs with potential for small arrays. The higher north west roof required substantial refurbishment in 2018 and this presented an opportunity to simultaneously install a 6.6kW (24 panels) solar array.
Working in partnership with Portsmouth City Council's energy team and Portsmouth based installer Space Renewables we commissioned the array in September 2018. The panels sit below the parapet wall thus having some wind protection and being invisible from the street.
The array primarily serves our first floor administrative offices, thus much of the printing of service leaflets, letters etc is now solar powered. It also serves our second floor scholars flats, which provide additional weekend demand.
In the first 12mths of operation the array has generated 6102 kWh of electricity - exceeding our original project forecast by 7% - and in excess of 80% has been consumed on site. The array also earns feed-in tariffs (FITs).
When the smaller north east roof comes up for refurbishment there would be potential to add a further 2.2kW array.
Below is a photographic timeline of the installation work from September 2018: