Accurately Matching Household Electricity Needs
Basic Load Calculation: Calculate the average daily electricity consumption of major appliances in your home, such as air conditioners, refrigerators, lighting, and water heaters. For example:
Air conditioner (1.5kW × 4h) = 6kWh
Refrigerator (0.2kW × 24h) = 4.8kWh
Total approximately 10.8kWh/day. It is recommended that the energy storage capacity be ≥10kWh to cover basic nighttime electricity consumption.
Prioritizing Critical Loads: If only emergency power is needed (such as maintaining router and refrigerator operation during power outages), a small-capacity system of 5–7kWh can be selected; if high-power devices such as air conditioners and electric water heaters need to be supported, a system of ≥10kWh is required, ensuring the inverter output power is ≥5kW.
Photovoltaic Collaboration Design: If photovoltaic systems are already installed or planned, the recommended energy storage capacity is 30%–50% of the average daily power generation. For example, a 5kW photovoltaic system generates an average of 20kWh of electricity per day, and energy storage can be configured with 6-10kWh to reduce curtailment and improve self-consumption rate.
Assessing Installation Environment and Space Conditions
Indoor Installation: Prioritize well-ventilated, cool, and dry areas (such as storage rooms or garages), with a load-bearing capacity of ≥50kg/㎡. Avoid damp or high-temperature environments that could affect battery life.
Outdoor Installation: Requires a rainproof and sun-protective enclosure with an IP65 protection rating or higher, and should be kept away from children's play areas.
Space Layout: Integrated systems have a small footprint and simple wiring, suitable for families with limited space; split systems are flexible and expandable, suitable for future electricity demand growth.
