There are a number of products out there that claim to do just this.

There are some which modulate a second immersion's power input based on some CTs clamped around the incomer as a simple solution.

There are much more sophisticated arrangements available now; for domestics these are often driven by the inverter datalogger, and generally use the same logic as required for EREC G100 export limitation schemes and for controlling the battery charge/discharge.

I don't work with domestic schemes very often though so can't recommend specific products, but the installer will probably be more than happy to discuss options.

(* No connection, and no experience with them in the field, just seen them at a number of trade shows)

There are a number of products out there that claim to do just this.

There are some which modulate a second immersion's power input based on some CTs clamped around the incomer as a simple solution.

There are much more sophisticated arrangements available now; for domestics these are often driven by the inverter datalogger, and generally use the same logic as required for EREC G100 export limitation schemes and for controlling the battery charge/discharge.

I don't work with domestic schemes very often though so can't recommend specific products, but the installer will probably be more than happy to discuss options.

(* No connection, and no experience with them in the field, just seen them at a number of trade shows)