In this study, we innovatively proposed a Photovoltaic-Biogas-Storage Direct-Current and Flexible Architecture System (PBS-DC-FAS), which combined photovoltaic (PV), biogas power generation, energy storage, heating, ventilation, and air conditioning (HAVC), and direct current. In this study, we innovatively proposed a Photovoltaic-Biogas-Storage Direct-Current and Flexible Architecture System (PBS-DC-FAS), which combined photovoltaic (PV), biogas power generation, energy storage, heating, ventilation, and air conditioning (HAVC), and direct current. The Outdoor Photovoltaic Energy Cabinet is an all-in-one energy storage system with high strength, which can work under harsh environmental conditions to supply high-performance energy backup and regulation. It is built specifically for outdoor installation and integrates advanced LiFePO₄ battery. Highjoule's Outdoor Photovoltaic Energy Cabinet and Base Station Energy Storage systems deliver reliable, weather-resistant solar power for telecom, remote sites, and microgrids. Sustainable, high-efficiency energy storage solutions. By utilizing the Long-cycle LiFePO4 module (8,000+ cycles) and advanced liquid cooling energy storage system technology, we provide a localized power station capable of high-frequency market participation (VPP) and. Integrates photovoltaic and wind energy to reduce carbon emissions and lower energy operating costs. Wall-mounted and pole-mounted installation is facilitated by compact design, making it simple to deploy at diverse locations. Unlike traditional systems requiring separate inverter cabinets, battery. Standardized Structure Design: Includes energy storage batteries, power conversion systems (PCS), photovoltaic modules, and charging modules in a compact and highly efficient cabinet.