How big is the biosolar roof at Havering?
This magnificent biosolar roof covers some serious space!
894m2 wildflower green roof using the Zinco system.
220 solar panels on Zinco bio solar frames & bases.
Ballasted hand rail 140 metres.
All installed by the Pritchard and Pritchard team.
Installing horticulturally rich content into biosolar roofs is essential. This wildflower mix includes:
Birdsfoot trefoil, Black knapweed, Black medick, Bladder campion, Bulbous buttercup, Common toadflax, Corn chamomile, Cornflower, Cowslip, Devils bit scabious, Field poppy, Field scabious, Greater burnet, Kidney vetch, Lady’s bedstraw, Musk mallow, Night flowering catchfly, Oxeye daisy, Rough hawkbit, Salad burnet, Selfheal, Small scabious, Vipers bugloss, Wild carrot, Wild clary, Wild mignonette, Yarrow
It’s quite a mix to attract pollinators and other invertebrates. This emphasises the value that green roofs can bring to creating green corridors into cities to support vital wildlife.
Striking the right balance to provide year round forage on green roofs is essential for success!
Which system did we use for the biosolar roof at Havering?
‘With its Solar Base, ZinCo incorporates solar energy into green roofs and creates synergies, whether it is for generating electricity (photovoltaic) or for heating and hot water applications (solar thermal). The height of the Solar Base Frames creates enough distance between the substrate layer and the solar panels, providing the plants with enough sunlight and rainwater and enabling appropriate maintenance.’
Enhanced performance of photovoltaic modules: The performance of photovoltaic modules depends on the temperature of the modules and the surrounding ambient air temperature. The rule of thumb is: “the warmer the module, the lesser the performance”. In fact, modules heat up considerably as a result of solar radiation. This is impaired by a hot roof surface such as a bare waterproofing membrane or a gravel roof. However, if combined with a green roof, solar modules will perform better. Through the cooling effect caused by evaporation at plant level, the ambient air temperature is cooler and photovoltaic cells improve their performance.’
Read more about the Zinco biosolar roof system here.