How to calculate Solar PV Requirements?
Working out how many PV panels you need to cover your electricity requirements is not a simple matter. Here's an example walkthrough so you can get a handle on your own calculations.
Step 1 – List your plug loads
Walking around our imaginary house, we list every appliance, gadget and other plug load that uses electricity. Next to them, we write down the power use and the estimated number of hours they're switched on in summer and winter.
Our table looks a bit like this (though a lot longer):