Your configuration should give you 4 new sensors:
sensor.envoy_current_energy_production
sensor.envoy_today_s_energy_production
sensor.envoy_last_seven_days_energy_production
sensor.envoy_lifetime_energy_production
You should be able to find them in the Developer tools -> States.
To add them to your UI, start simple and add them to an entities card.
For a more advanced UI widget, and assuming that your Envoy can also supply energy consumption, have a look at the Power Wheel Card, and my recommendation on configuring this with an Envoy-S.