Is a home solar battery worth it in 2026?
It is worth it mainly where exported solar is credited below retail (California, Arizona, Texas, Illinois) or where outages are common. Under full retail net metering, a battery is mostly backup power.
Large installers now attach batteries to most new systems. Sunrun reported a 74% storage attachment rate in Q2 2026. This happens because export credits keep falling while evening electricity prices rise.
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Frequently asked questions
Is a home battery worth it in 2026?
It is worth it mainly where exported solar is credited below retail (California, Arizona, Texas, Illinois) or where outages are common. Under full retail net metering, a battery is mostly backup power.
Can I add a battery to my existing solar system?
Usually yes. An AC-coupled battery can be added to most grid-tied systems. If your original installer has closed, an independent installer can still assess and add one.
How big a battery do I need?
For evening self-consumption, size the battery to your usage from about 5pm to bedtime, often 10 to 15 kWh. For whole-home backup, size to your critical loads and the length of outage you expect.