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Best Solar Battery in 2024

Written by Faith Foushee/

Edited by Jamie Cesanek

Last updated 02/19/2024

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Key Points

  • Solar batteries keep your home powered during outages or low production periods by storing excess energy produced from solar panels.
  • The average cost of a battery storage system is about $11,000 before installation fees.
  • The best solar batteries of 2024 include modules from brands like Delta, FranklinWH, Generac, LG, Sonnen, and Tesla.

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Solar battery FAQs

  • Solar batteries normally cost between $5,000 to $16,000, depending on the size and type, before incorporating the cost of installation. However, batteries are sometimes included in the total solar system cost. The federal solar tax credit can help lower the net cost of a solar system. If you are leasing your solar panels or signing a power purchase agreement (PPA), check your contract to see if a battery is an option.

  • one battery provides enough backup power for essential functions during a temporary power outage. You can add more batteries if you want to backup your entire home’s energy usage. According to the Energy Information Administration(EIA), the average home uses about 877 kilowatt-hours (kWh) per month. This equals approximately 30 kWh of energy each day. Check each battery’s total capacity to decide how many batteries you need to power your home. It’s important to consult with a solar energy professional to determine the specific battery capacity best for your home.

  • Solar batteries can last between five and 15 years. The lifespan of a home solar battery will be longer if you maintain it and protect it from extreme weather conditions. The DoD also impacts a battery’s total lifespan. If you draw more energy out of the battery than is recommended, you may decrease your battery’s efficiency.

  • Yes, a battery storage system is a worthwhile investment, especially for solar system owners who generate more power than their home consumes. In addition, batteries can reduce electricity costs and your home’s reliance on the power grid

  • Yes. Most batteries, like the Tesla Powerwall, are weather-resistant for indoor and outdoor use. Consider housing your batteries in a battery cabinet if stored outside for extra protection from weather or pests. Your solar installer or an independent technician can advise you on the best place for installation.

  • Yes, temporarily. The stored energy from a battery will power necessary functions in your home during a temporary power outage. A technician will install a transfer switch to alert your power system to start using the backup battery power during an outage. However, power must be restored before your batteries are depleted to maintain continuous electricity in your home.

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