Sample survey
See how it works for one of London's Blue Plaque properties
Donovan Court, 107 Drayton Gardens, Chelsea*
* - home to Rosalind Franklin, English chemist and X-ray crystallographer whose work was central to the understanding of the molecular structures of DNABuilding type
Mid terrace, large block of flats.
No. of households/flats
38
No. of bedrooms
3
Viable roof space
212 m2
Roof orientation: South
The highest potential in this roof is South facing, this roof will generate its maximum power at midday
Good potential
The estimated maximum annual generation for this property is 581 units of electricity (kWh), that's 20% of the electricity required for a 3 bed home
Costs & savings
How much would a full installation cost for this property & how long would it take before this system paid for itself?
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Your quote
Per home installation cost
£1,091
Based on
an installation covering 100% of the viable roof space
Per home annual savings
£231
Based on
an average electricity bill for a 3 bed home
Per home payback period
5 years
Based on
Savings from electric bill for 3 bed home. Without earnings from export to grid or grant to fund installation costs
Yesterday
How much electricity would this property have generated yesterday?
The roof would have generated
580
Watts
That's enough to power all these appliances for free
a smart phone (charge)
broadband router
tablet (charge)
extractor fan
tv set top box
dvd/cd player
laptop
LCD TV