Looking for an AC-coupled battery that works well with HA

I'm based in the Netherlands with 16 solar panels using Enphase micro inverters. Because of the way net metering works in our country (ending in 2027), I am going to need a battery. But I definitely don't want to pull my existing Enphase installation down.

For this reason, AC-coupled is the most sensible option for me at this point.

As you can tell from my questions above, I am not as familiar with this topic and would be very grateful for any insight that anyone who runs this sort of system could offer me!

Specifically, I'm seeking something with:

Local (not cloud) API access;Integration via Home Assistant (HA), which is how I operate all systems at home now.Information on SOC / charge/discharge power capabilities, Ideally this will allow me to define schedules when I do want/need to chargeAt minimum, 3kW output (the heat pump we have draws ~3kW upon start up).