Should I add battery storage?

Storing your overproduction of energy is an option. Research battery storage options that will suit the amount of solar energy you produce. Just remember, a battery only stores so much energy, then it will need recharging. It may not run your whole house or for very long, depending on what you have on and how much battery storage you have installed. Battery storage can provide a lot of power in a short time or less power over a long time.