Alison Richards

Solar for conservation and historic buildings

Transcript

1. Alison Richards Business Development Director, Solar Slate
2. Energy Now Expo 2013 13-14 February, 2013 – Telford International Centre Alison Richards 2 Solar PV for Conservation & Historic Buildings
3. You'd like to install solar PV but • it’s on a traditional or listed building • in a conservation area • in an Area of Outstanding Natural Beauty (AoNB) • subject to the National Planning Policy Framework (NPPF) ... so what does this mean? 3 Solar PV for Conservation & Historic Buildings
4. 4 Two useful publications English Heritage Website: http://www.climatechangeandyourhome.org.uk/live/
5. 5 From Microgeneration in the Historic Environment • no loss of special interest • visual impact is minor • no loss or damage to significant historic fabric and installation is reversible • can demonstrate that: – other energy-saving measures not viable – other locations not viable – proposal has net environmental benefit
6. 6 Key Considerations for Solar PV • “principle of minimum intervention & reversibility” • Likely to need planning permission – will consider visual impact • Issue of material loss – re-roofing is essential • Orientation - ideally south-facing? • Tilt angle – optimum is 30° & avoid shading • Structural survey • Wildlife – particularly bats & some birds
7. • Fix array over top of roof finish • Building integrated photovoltaics – Tiles integrated into the roof finish – Glass mounted • Installation away from the building – Alternative building outside curtilage – Ground-mounted array 7 What are your options generally?
8. 8 What are your options for a slate roof? • Fix array over top of roof finish • Tiles integrated into the roof finish
9. 9 Solar Slate in Snowdonia National Park Y Stabal is a heritage building that has been converted for holiday accommodation in an SSSI. CADW approved the installation of 340 Solar Slates generating 2.21kWp.
10. • Can fit to the main elevation of the building – as visual impact of tile is minimised – all other components are hidden in the roof space • Can design for optimum solar radiation – as for conventional PV • Can be installed by traditionally skilled roofers using traditional materials • To date, Solar Slate has a 100% record in securing planning permission 10 Benefits of Solar Slate
11. Solar Slate – slate matching 11 Penrhyn Heather Blue Ffestiniog Blue Grey Cwt-y-Bugail Dark Blue Grey Siga 39 (Spanish) Delabole Slate Glendine Solar Slate is available in one colour which matches the following slates: Solar slates offer: •15% module efficiency •22.4% cell efficiency •130 Wp per square metre
12. 12 Fitted onto a battened roof with slate hooks (as double lapped roof construction) Solar Slate – Roofing installation
13. Solar Slate Case Study - The Malthouse, Taylers Farmhouse 13 •7-bedroomed, >6,500ft2 property •further 4,300 sq ft of outbuildings •existing roof in need of repair •subject to Listed Building Consent •Grade II listed farmhouse •in Cotswolds conservation area •removed the existing slates & only 50% of the slates were salvageable •salvaged slates re-distributed over the north facing roof slope •discounted ground-mount PV due to trees with TPO’s, livestock & children! •Planning refused for large-format integrated panels • shortfall on the southern slope made up with Solar Slates •effectively no material additional loss of historic fabric
14. 14 •2.1kWp system – 324 Solar Slates •Sample for LPA to demonstrate difference from standard solar panels •installed during the complete re-roof Solar Slate Case Study - The Malthouse, Taylers Farmhouse •Grade II Listed •Area of Outstanding Natural Beauty •Conservation area •Cotswolds
15. Approved by the National Trust, CADW, Duchy of Cornwall, Bath Preservation Trust & in the Peak District, Dartmoor, Exmoor and Snowdonia National Parks
16. Thank you for your attention! 16 Solar PV for Conservation & Historic Buildings