The SmartThings Energy is getting better and will start covering more countries.
It is better to start integrating the inverters (particularly the ones that use Smart Meters at the feed-in point) in order to have data on the produced energy, but also the total consumed, and what was injected into the grid.
The integration of the Fronius Datamanager 2.0 (which includes an important number of inverter models from Fronius) exists for a number of integrators like the Home Assistant and OpenHub.
Thank you all for the support that can be offered in order to create this integration with SmartThings!
PS Currently there is no official support from the manufacturer for this integration.