Backup Power

This depends on your usage and what you decide to back up. A typical small single-family home uses 35 kWh, a mid-size home 50 kWh, and a large home 70 kWh or more per day. These consumption estimates exclude EV charging. Luckily, you don’t need that big of a battery if you have solar. For most homes paired with solar, our 19.2kWh or 24kWh Stack’d battery will keep the lights, internet, fridge, and small devices on indefinitely during a power outage. Please see our sizing recommendation tool or call us with questions related to system sizing.

This will depend on your inverter setup. Sol-Ark inverters have a response time of 4ms, meaning you won’t even notice that the grid has gone down. Other equipment manufacturers also have very fast response times. We are inverter-agnostic to allow you and your installer to choose the best equipment for your application.

This is entirely up to you! HomeGrid batteries can provide enough power for massive commercial buildings, so this has more to do with your budget constraints. We can effectively replace your utility service if this is a concept you desire.

Most of our residential clients choose to supplement their whole-home power with the battery each day, and if the grid goes down, they choose to back up everything except for their high-usage items such as AC and electric dryer. This is typically the most cost-effective option. Usually, our Stack’d Series 19.2kWh or 24kWh can supply enough power for this.

The best way to extend your usage of HomeGrid products during an outage is to limit the energy consumption of your home. You can do this by turning off high-power appliances like air conditioners, electric dryers, or electric stoves. The less electricity you use during an outage, the longer your battery will last! If you have a small generator that feeds into the battery system, you may not have to reduce consumption at all.

It is possible to overload the combined power of the grid connection, battery, and solar that feeds the inverter. To avoid this, we recommend that you size the system to cover the peak power in the house comfortably. (We can help you figure out your estimated peak power). However, if you ever were to overload the system, some inverters have built-in breakers that will trip in order to keep everything safe.