The duration for which a residential energy storage system, such as solar batteries, can power a home during an outage depends on several factors:
- Battery Capacity: Typically measured in kilowatt-hours (kWh), a larger capacity means longer backup power. Common sizes include 5 kWh to 20 kWh.
- Energy Consumption: The amount of energy used by the home, particularly during an outage, affects how long the battery lasts. Running only essential appliances extends battery life.
- Solar Panel Output: If solar panels generate power during the day, they can recharge the battery, extending its duration.
- Weather Conditions: Cloudy or stormy weather reduces solar panel output, impacting battery recharge.
Estimated Duration of Power
- 5 kWh Battery: 3-12 hours depending on the home size.
- 10 kWh Battery: Approximately 24 hours for essential appliances without heating/cooling.
- 15 kWh Battery: 1.5 to 2 days.
- 20 kWh Battery: 2 to 3 days.
To maximize the duration:
- Minimize Non-Essential Appliances: Focus on essential devices.
- Use Energy Wisely: Lower thermostat settings and use LED lighting.
- Recharge During Daylight: Let solar panels recharge the battery during the day.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/how-long-can-a-residential-energy-storage-system-power-a-home-during-an-outage/
