The NEMA 3R cabinet BESS with built-in HVAC / transformer / aux power / 280Ah lithium-ion battery cell, with the bi-directional storage inverters, optional 3MPPT DC-DC PV charger, and optional smart transfer switch, which could be used in parallel on AC and / or DC. The ESS-GRID Cabinet series are outdoor battery cabinets for small-scale commercial and industrial energy storage, with four diferent capacity options based on diferent cell compositions, 200kWh, 215kWh, 225kWh, 241kWh, etc. They can be widely used in farms, animal husbandry, hotels, schools. Suitable for both on-grid and off-grid scenarios, our cabinets convert fluctuating energy prices into predictable costs, ensuring uninterrupted power supply for production lines even during grid. Chapter seven describes the technical challenges that arise when the amount of variable renewable. The air cooling outdoor cabinet-on/off grid machine integrates energy storage batteries, PCS, EMS, DCDC, air conditioning and fire protection systems. The local control screen can perform a variety of Space-saving: using door-mounted embedded integrated air. The outdoor photovoltaic energy cabinet can provide reliable housing for network servers, edge computers, professional equipment, monitoring systems, photovoltaic, and battery systems.