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.
Why It Matters
DC coupling avoids the double conversion loss (DC→AC→DC) of AC coupling, making it 3-8% more efficient. It's the better choice for new installations designed with storage from the start.
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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.
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.