How to Choose Between a Hybrid Inverter and an AC-Coupled Storage Setup
What is a hybrid inverter?
A hybrid inverter combines a solar inverter and a battery inverter in one unit. It manages DC power from solar panels, converts it to AC for your loads, and directs surplus energy into battery storage—all through a single device.
What is an AC-coupled system?
In an AC-coupled setup, solar panels connect to a dedicated solar inverter, and batteries connect to a separate battery inverter. The two inverters communicate through the AC bus. This is the common retrofit path when adding storage to an existing PV installation.
When to choose hybrid
Hybrid inverters shine in new installations. They reduce component count, simplify wiring, and offer higher round-trip efficiency because energy is converted only once between DC and AC. The switchover time to backup differs by model; each product page gives it from the datasheet.
When to choose AC-coupled
AC-coupled makes sense when you already have a working solar inverter and want to add batteries without replacing the existing hardware. The trade-off is slightly lower efficiency and a more complex commissioning process.
What installers should verify
Confirm battery compatibility, maximum charge/discharge rates, grid-code settings, and whether the chosen topology supports backup power during grid outages.
What could the right storage solution do for your site?
We’ll explore how hybrid or AC-coupled storage could work with your installation, your energy use and the outcome you want to achieve.