I want to generate reports from my SQL Server tables.
I have some already made stored procedures that I would like to use to generate reports from.
I haven
Firstly I think its best to make the point out that Power BI isn't Reporting Services, it expects to be given existing table data or views that you then model within it's own environment before creating your dashboards.
If you can get Power BI to do the work of your stored procedures. Once you have your data model defined within Power BI it can be reused.
There is a great introduction course for this on the Power BI website:
https://powerbi.microsoft.com/en-us/guided-learning/powerbi-learning-2-1-intro-modeling-data/