I'm trying to help my dad build a system and he wants me to figure out what's out there before deciding a budget.
Also I'm not entirely sure what all-in-one means, but I have heard of it.
I do know that I'll need 120V AC though! And thank you for the recommendation
I think that it would be interesting to get a little bit more information about the system that you try to design, or already have,
because the instalation of an off-grid solar system is a little bit more complex than a typical grid-tie system.
Are you currently using the power from the grid and try to lower your consumption cost by using solar energy,
or does your home is completely isolated and will depend only from solar energy. If so, you will need to also to
have extra power storage, or a generator, in case of bad weather.
So in general you need to start by making an electrical consumption audit, to identify which devices or systems are consuming the most energy.
In particular you need to consider if you have any motors (refrigerator, freezer, air conditioning...) because those require extra in-rush current.
In the case of a solar grid-tied system, the grid can provide extra in-rush current but in the case of an off-grid system you need to be sure
that your inverter will be able to handle the extra in-rush current, without damaging your inverter.
You could consider using some SoftStart device to lower the in-rush current and use some timer delay to prevent having several motors
starting at the same time. Also a low frequency inverter might be recommended to handle high energy peak demand, combined with a
more efficient and maybe less powerfull high frequency inverter.
You need to have an idea of your daily consumption to estimate the battery capacity needed, and then determine the number of solar panels
needed to recharge your battery, especially during winter time, when the solar energy production is reduced, while consumption might be higher.
