For Azure there is a donation offer - the App Service price itself is the same, but non-profit orgs. get some consumption: Azure cloud solutions | Microsoft for Nonprofits
For PowerBI - see here: Nonprofit Power BI data insights | Microsoft for Nonprofits
Note that if you are CSP Reseller you can get this info in the CSP pricelist, if you are indirect CSP reseller ask your provider for pricing info.
Get consultations form Technical Presales & Deployment services team via https://aka.ms/technicalservices