Solar Home Power Station
Free Solar Panel Survey

 

Solar power calculator.

Solar Shop - Specialising in practical Solar Products


The Solar Panel Calculator below is designed to hel p 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). Check out the appliances power list below.

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 appliances in the UK?

Season Average peak sun hours per day (UK) Solar Panel Kit Required
Summer 7 Hours Watt Panel Kit
Average 4 Hours Watt Panel Kit
Winter 2 Hours Watt Panel Kit

*Please note* these calculations are based on the best optimum siting of the solar panel in the UK.

Facing south at an angle of 30-35 degree.

Some examples of the expected energy draw from various appliances.
Kitchen (w) Office (w) DIY (w)
Coffee Pot - 200 Laptop Computer - 20-50 Weeder - 500
Coffee Maker - 800 Desktop Computer - 80 - 150 Hedge Trimmer - 450
Toaster - 800-1500 Printer - 100 1/4" Drill - 250
Popcorn Popper - 250 Scanner - 14 1/2" Drill - 750
Blender - 300 Shredder - 100 1" Drill - 1000
Microwave - 600-1500 Hard Drive - 15 8 1/4" Circ. Saw - 1400
Waffle Iron - 1200 Typewriter - 80-200 9" Disc Sander - 1200
Hot plate - 1200 Ceiling Fan - 10-50 3" Belt Sander - 1000
Frying Pan - 1200 Table Fan - 10-25 12" Chain Saw - 1100
Dishwasher - 1200-1500 Electric Clock - 3 14" Band Saw - 1100
Gbg. Disposal - 450 Answering Machine - 10 7 1/4" Circ. Saw - 900
Fridge Freezer - 200-400 Electric Pencil Sharpener - 100 Electric Mower (n/a) - 1500
Food Blender - 350 Wireless Router - 7 AC Grinder 1/2 hp - 1080
Electric Whisk - 120    
Utility (w) Home Media (w) Other (w)
Handheld Vaccuum - 100 TV (47" Plasma) - 250-450 Clock Radio - 1
Upright Vaccuum - 200-700 TV (47" LCD) - 125-200 Electric Blanket - 200
Iron - 1000 TV (47" LED) - 90-150 Portable Heater- 1500
Sewing Machine - 100 CD Player - 35 Garage Door Opener - 350
Washing Machine - 300-500 Portable Stereo - 10-30 Waterbed - 400
Clothes Dryer - 4000 Satelite - 30 Car Stereo - 8
Air Con Room - 1000 DVD Player - 60 Shaver - 15
Air Conditioner (n/a)…
Projector - 120-200 Guitar Amplifier - 40
Hair Dryer - 1000 DVR - 33 Synthezier - 30
Hair Straighteners - 80 HI-FI - 30 Games Console - 190
Hair Curlers - 750 VCR - 30 Cinema Amplifier - 800
In line with our policy of continuous product improvement, SolarShop reserves the right to change, vary or alter the product specification without prior notification.

© Copyright SolarShop - SolarShop Tel: +44 (0) 1256 352502 : Terms and Conditions : Site Map