Battery Backup
What to know about backup batteries
Grid-tied solar electric systems don’t require a battery to operate (or to save money on your electric bill.) But if you are looking for a quiet, nearly instantaneous backup power solution, adding batteries to your system can be a great solution!
How does a backup battery system work during a power outage?
During a power outage, the battery system automatically provides backup power. If it is sunny out during the outage your solar electric system can charge the batteries and will even contribute to operating your electrical loads. Once grid power is restored your battery will recharge and be available for use during the next power outage.
What can you power with backup batteries during an outage?
Most home battery backup systems are designed to power critical electrical loads. Critical loads may include refrigerators, well pumps, oil or gas heating systems, lights, and items such as cell phone chargers and garage door openers.
How many batteries will I need?
The size of a battery backup system impacts both the amount of electricity available run electrical loads as well as how long the batteries will last. A battery backup powering just lights and a well pump will last longer than one that is also powering a heating system or a cooking appliance. Our team can provide guidance about the capacity and cost of the different energy storage systems we offer.
What types of batteries are available?
Most battery backup systems use lithium-ion batteries. Popular options among our customers include the FranklinWH aPower 2, Tesla Powerwall and SolarEdge Home Battery. Each system offers different benefits—such as power output, load control, or app features—and our Solar Consultants will help you compare options during your free consultation.
Can I install battery backup if I already have solar?
Yes, you can! A battery backup system can be retrofitted to most existing home solar systems. If you’re interested in adding batteries to your current system, reach out and we’ll advise you on your options.
Are batteries covered by a warranty?
Most battery manufacturers offer a 10-15 year equipment warranty.
Can I earn money with my battery?
Yes. Eligible battery owners may be able to earn annual incentive payments through the Efficiency Maine Small Battery Program by allowing their battery to occasionally support Maine’s electric grid during periods of high demand. Maine Solar Solutions currently installs qualifying FranklinWH and Tesla battery systems. Incentive amounts, enrollment requirements, and payment schedules are determined by the participating battery manufacturer and may vary by battery system.
Can I install a battery without solar?
Yes! For customers who may not want or be able to install solar and/or a generator at their home a battery system can provide back-up power during an outage. The backup power runtime will be limited but this can be a great solution for condo owners or those looking to run small electrical loads during short power outages.
Let us design the right system for you
Our team is here to help you choose the right solar and battery backup solution for your home. If you’re ready to take the next step, reach out to schedule your free site assessment.
