Building a residential energy storage system requires a systematic approach across four stages: planning and design, equipment selection, installation and commissioning, and operation and maintenance. The core objective is to achieve low-carbon, intelligent, and economical household electricity use.
Preliminary Planning and Demand Analysis
Electricity Load Assessment: Calculate the daily electricity consumption by analyzing the power consumption and average daily usage time of major household appliances (air conditioner, refrigerator, lighting, etc.). For example:
Air conditioner 1.5kW × 4h = 6kWh
Refrigerator 0.2kW × 24h = 4.8kWh
Total approximately 10.8kWh/day
Energy Storage Capacity Matching: It is recommended that the energy storage duration cover the grid peak hours (generally 4-6 hours). The capacity should be calculated based on the average daily peak electricity consumption × a redundancy factor of 1.2. If coverage of 6 hours of peak electricity is required, a storage system with a capacity of ≥7kWh is recommended.
Photovoltaic Coupling Design (Optional) If photovoltaic (PV) systems are installed, the recommended energy storage capacity is 30%-50% of the daily PV power generation. For example, a 5kW PV system generates an average of 20kWh per day, and the energy storage capacity can be 6~10kWh to avoid curtailment of solar power.
