Our solar air conditioners are designed to significantly reduce electricity costs while providing reliable cooling even in the most challenging environments. Energy-efficient cooling powered by renewable energy. 100% energy saving in the daytime. It requires no batteries and a solar MPPT booster and inverter are bu. com is the authorized official European online store of Ningbo Deye Technology Co. Thanks to advanced full DC inverter technology and a built-in MPPT, the air conditioner maximizes the. Official Deye balcony solar storage systems for Europe — plug & play power plants with LiFePO4 batteries, microinverters and expansion packs.