Hi Orlando,
The community solar financial model is in SAM 2021.12.02, so you can use that instead of the Beta version. For now, it is only available for PVWatts, but as we get more feedback on the model, we plan to make it available with the Detailed PV and PV Battery configurations.
For the community solar model, the project earns revenue from subscription payments rather than from PPA revenue. SAM provides options for different types of subscription payments on the Community Solar input page.
Please see the Help topic for the Financial Parameters page for a description of those inputs (press the F1 key in SAM or click the Help button at the top right of the SAM window). Here is a link to that topic in the online copy of Help:
samrepo.nrelcloud.org/help/fin_community_solar.htm
Best regards,
Paul.