For growing energy needs, choose a stackable battery system for flexibility, while for a single-home system, a non-stackable option with a high energy rating might be simpler. Stackable systems are ideal for homeowners who want to start small and expand later, or who need more capacity than a single unit offers, but less than a full commercial system. Non-stackable systems are better if you have a good idea of your long-term needs and want the simplest possible setup. Contact Enerlution Battery, we are one of the most professional energy storage battery companies in China, we can provide one stop energy storage solutions.