To find the battery backup you need for your home, estimate your daily energy consumption in kWh. Most homes use about 30 kWh each day. Choose a battery between 10 and 50 kWh to handle power outages.
Given that power outages are infrequent in most parts of the country, a partial-home battery backup system is generally all you'll need. But, if your utility isn't always reliable for power, whole-home battery backup may be the way to go. How much of my house can I run on a battery?
The factors that determine the battery backup needs for your house include your home's energy consumption, desired backup duration, climate conditions, availability of solar power, and local utility rates. Understanding these factors will help you accurately estimate the appropriate battery backup system for your needs.
The voltage of most battery backup systems (and that used by most non-hybrid or electric vehicles) in the U.S. is 12 volts, while the power used by most items is 120 volts, though large electrical appliances usually use 240 volts (e.g. stove/oven, water heaters, clothes dryers, furnaces, central air conditioning units, well pumps).
Overall, the Battery Backup Calculator is a useful tool that can help you determine the appropriate battery capacity to provide backup power for your electrical devices. By using this tool, you can save time and money, improve power reliability, and ensure that you have the right battery capacity for your backup power needs.
Comparatively, partial-home battery backup systems usually store around 10 to 15 kWh. Given that power outages are infrequent in most parts of the country, a partial-home battery backup system is generally all you'll need. But, if your utility isn't always reliable for power, whole-home battery backup may be the way to go.
Why do you need a whole-home battery backup system?
Whole-home battery backup keeps things business as usual during power outages. Why trust EnergySage? Installing a whole-home battery backup system means you won't need to break out the candles or worry about keeping the refrigerator closed during power outages.