Solar Panel Calculator

The Solar Panel Calculator below is designed to help you establish what sort of solar panel kit you'll need to power your appliances. Once you have thought about what appliances you want to power using solar energy, check the user manual or the appliance itself to establish the wattage. For example, if you have a laptop look at the adaptor pack and you should see the wattage listed there (typically 65W).

Stage 1 - Watt-hour Calculation

Once you have wattage figures for each appliance simply enter them in the boxes below to establish the total Watt-hour for all your appliances.

Appliance	Watts	Usage hours per day
1		Hours
2		Hours
3		Hours
4		Hours
5		Hours
Energy required by appliances per day is : Watt-hours

Stage 2 - Efficiency Adjustment

Efficiency adjustments account for natural losses, we multiply the result by 1.2 (this factor allows for natural system losses, assuming 85% efficiency). The panels will actually need to be able to supply a total of : Watt-hours (efficiency adjusted)

Stage 3 - What solar panel kit do I need to power my appliences in the UK?

Season	Average hours of sun per day (UK)	Solar Panel Kit Required
Summer	7 Hours	Watt Panel Kit
Average	4 Hours	Watt Panel Kit

To be safe The Solar Centre advises using the Average figure when selecting solar panel kits from our range below.

DIY Solar Panel Kit - 150W Price: £799.99 Click to view	DIY Solar Panel Kit - 80W Price: £449.99 Click to view	DIY Solar Panel Kit - 120W Price: £659.99 Click to view
DIY Solar Panel Kit - 60W Price: £359.99 Click to view	DIY Solar Home Power Station Price: £995.95 Click to view	DIY Solar Panel Kit - 18W Price: £159.99 Click to view
DIY Solar Panel Kit - 10W Price: £99.99 Click to view