Yes, you can add the kWh meter to Home Assistant with the HomeWizard Energy integration. The API is released about a year ago.
The kWh meter is not equipped with a relay or something like that. You can use the EnergySocket as it also measures export for that, but that one is limited to 16 amps.
Follow this thread to learn more about the integration: HomeWizard Energy (Wifi P1 meter, kWh meter and Energy Socket)