Photovoltaic energy storage system refers to the combination of photovoltaic power generation and energy storage technology to convert solar energy into electricity and store it to meet people's demand for electricity, which has the advantages of cleanliness, environmental protection, renewability, stability and reliability. Ka taea te whakamahi i roto i nga ahuatanga maha, penei i te kaainga, te pakihi, te umanga me era atu.