The table below provides estimates of the potential benefits and costs of installing different quantities of solar PV panels at your school

Capacity(kWp) Panels Area (m2) Annual self consumed solar electricity (kWh) Annual exported solar electricity (kWh) Annual output from panels (kWh) Reduction in mains consumption Annual saving Estimated cost Payback years
1 3 4 840 1.7 840 0.28% £100 £2,400 24 years
2 7 10 1,700 3.9 1,700 0.56% £200 £3,200 16 years
4 13 19 3,400 9.3 3,400 1.1% £400 £4,800 12 years
8 27 39 6,700 21 6,700 2.2% £810 £7,900 10 years
16 53 76 13,000 58 13,000 4.5% £1,600 £14,000 9 years
32 107 154 27,000 200 27,000 8.9% £3,200 £26,000 8 years
47 155 223 38,000 1,500 39,000 13% £4,600 £37,000 8 years
64 213 307 48,000 5,900 54,000 16% £6,100 £49,000 8 years
128 427 615 71,000 36,000 110,000 24% £10,000 £89,000 9 years
Installing solar PV at your school will reduce the electricity you consume from the national grid, and reduce your school's carbon emissions.  Your PTA might be prepared to help you raise some of the cost of installing the panels. 

The estimates in the table assume you have roof space and that is it roughly south facing - as this is best for schools whose peak demand is during the middle of the day when south facing panels produce the most electricity.

The benefits of solar PV will be reduced if you make your school more energy efficient. However, if you want your school to reduce its carbon emissions you should consider both installing solar panels and reducing your electricity consumption.



Energy Sparks supports Aviemore Primary School in partnership with Highland Council