There is a new connector available in Power BI desktop that you can use to build reports for Dynamics 365 Business Central. When you have Power BI desktop opened, navigate to:
'Online Services' > 'Microsoft Dynamics 365 Business Central'
As long as you are signed in with a user that has access to Business Central it should automatically load up a list of your existing companies. You can drill down into the companies to connect directly to your published Web Services to build reports.
Since this connector is using AAD authentication, any reports that you create can be saved to the Power BI website and shared with other users.