Don’t want to wait on Tesla Powerwall?

Tesla Powerwall is in high demand these days, with orders backlogged for months because of production delays and COVID related supply chain interruptions. That doesn’t mean you have to wait to have whole-home battery back up installed though. With other high quality brands like Generac, Enphase, SunPower and others bringing their own batteries to market, you have more choices than ever when it comes to energy backup and security.

As the price of home batteries continues to fall, whole-home backup is becoming a more attractive option for homeowners who are looking to make more sustainable choices and who are looking to reduce their dependency on utility companies for power. When you add batteries to your home’s solar energy system, you can store the excess energy your panels create for use when the sun isn’t shining or when the grid is down, thereby further cutting your electricity bill.

When shopping for a battery back up system, it’s important to understand the basics of capacity and power. Capacity is the total amount of electricity that a solar battery can store, measured in kilowatt-hours (kWh). You can ‘stack’ most batteries so that you have more capacity. The power rating of a battery tells you how much electricity a battery can provide at a given moment. In the context of solar batteries, a power rating is the amount of electricity that a battery can deliver at one time. It is measured in kilowatts (kW). A battery with a high capacity and a low power rating would deliver a low amount of electricity (enough to run a few crucial appliances) for a long time. A battery with low capacity and a high power rating might run your entire home, but only for a short time.

If you are adding batteries to your solar PV array, one or two batteries can provide sufficient power during nighttime when your panels are not producing, depending on your energy loads. If you want to use the appliances that pull the heaviest energy loads, like air conditioners and clothes dryers, you will definitely need 2 or more of the larger sized batteries that are currently available on the market.

Give us a call if you have questions about the different types of batteries and what might be right for your home and lifestyle!