Modular household energy storage (household storage) scheme refers to the modular energy storage system scheme for different household users. During the day, the electricity generated by the photovoltaic system is preferentially used by the local load, and the excess energy is stored in the battery, which can be selectively incorporated into the power grid if there is still a surplus of electricity. At night, when the photovoltaic system is unable to generate electricity, the battery discharges to provide electricity for the local load. Energy storage solutions for households achieve a higher proportion of green electricity for self-use, reduce the cost of electricity, and ensure the stability of users' electricity under extreme weather conditions; Users can easily grasp the situation of the power station through monitoring and enjoy a zero-carbon life.