PowerBI licencsing with SPLA aggreement

Hi,

Perhaps somebody here can answer the following question or at least guide me to the correct team to ask.

We currently evaluate PowerBI as frontend for our tool (and compare with other tools). Our backend already uses SQL Server and we can use a SPLA licencenses for this purpose.

I wonder (and already asked several contacts including our license seller) if we could get license for Power BI on premise with our SPLA agreement. I already got to know that Power BI on Reporting Server is part of Software Assurance. So the question is if we can get Software Assurance for SPLA licenses.

Thank you

P.S. I already found enough information about the options we have to calculate license cost for Power BI embedded or Power BI Premium.