Home battery backup systems, like the Tesla Powerwall or the LGES 10H and 16H Prime, store energy, which you can use to power your house during an outage. Batteries get that electricity from your home solar system or the electrical grid. As a result, they're much better for the environment than fuel-powered generators.
Home battery backup systems offer several advantages. For homeowners with a solar system, a home battery system is a convenient choice. Current home energy management systems with battery storage were primarily designed for existing solar systems, making it quite convenient to charge batteries from solar panels.
Solar battery storage systems offer many of the same backup power functions as conventional generators but can run on clean energy instead of fossil fuels. We compare the costs, fuel sources, size, and maintenance requirements of battery backup options compared to conventional generators.
Battery backup systems could be more cost-saving in the long run compared to generators because they have low operating costs, unlike generators which require constant investment in fuels and maintenance. However, the run time is limited during a prolonged outage since a battery has a fixed maximum storage.
Instead of paying high electricity rates during peak usage hours, you can use energy from your battery backup to power your home. In off-peak hours, you can use your electricity as normal -- but at a cheaper rate -- and recharge your battery when it costs less.
Exact pricing will vary based on which battery model you choose and how many of them you need to power your home. However, it's common for an average-size home battery backup system to run between $10,000 and $20,000. For generators, the upfront costs are slightly lower.