AC-Coupled System
A battery configuration where the battery has its own inverter and connects on the AC side of the electrical panel. Allows adding a battery to an existing solar installation without replacing the solar inverter.
Why It Matters
AC coupling is the go-to retrofit option. Since the battery has its own inverter, it works with any existing solar system regardless of inverter type.
Real-World Example
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Related Terms
DC-Coupled System
A battery configuration where the battery connects on the DC side of the solar system, sharing an inverter (hybrid inverter) with the panels. More efficient but requires compatible equipment.
Battery Storage
A system that stores excess solar energy for use when the sun isn't shining, providing backup power during outages.
Inverter
A device that converts direct current (DC) electricity from solar panels into alternating current (AC) electricity used by your home.