Solar Power FAQs: How do I know what size solar system I need?
Estimate your power usage with an online load calculator. You could also do the estimate manually: calculate watt hours by using each appliance’s power rating, multiplied by the time (hours) it will be running, or, compare our example usage on each kit page to your intended usage for an easy estimate.
We recommend reading our Solar Basics article to learn more. It's also important to keep in mind that there are certain things that are best run on alternative energy sources such as LPG and woodburning - learn more about that here.