Photovoltaic energy storage is an advanced energy technology designed to make full use of solar energy, provide clean, renewable electricity, and solve energy storage challenges. The system converts solar radiation into electricity through photovoltaic panels, which is then stored in an advanced battery system. The photovoltaic energy storage system also has the function of emergency backup power supply, which can provide power in case of power outage or emergency. This reliability is critical to critical infrastructure, residential and commercial users alike.