See our off grid Kits section which will give you a basic overview of what each kit is suitable for. You can also use our online calculator , just fill in the sections in blue to your exact power usage and compare the answer in Yellow to get an indication of what kit size will be the correct fit for your power needs.However, there is no short answer here as your off grid system needs to be sized to your specific needs. Mainly your essential power needs as discussed, but also your budget and flexibility in your lifestyle. For example, does it work with your lifestyle to work with the weather, only using big draw appliances when the sun is blazing or are you needing more freedom to know that an abundance of power is available on Tap. Getting your system sized correctly is paramount for its sustainable functioning over the years and for it to last the test of time so if in doubt, feel free to reach out and we are here to support you in making sure you get exactly what you're needing.