As far as I know, three ways to refresh the data in Power BI Embedded.
- If report is importing data, recreate a pbix and re-import it to workspace, no schedule refresh.
- If report is using direct query, use Azure SQL database/data warehouse and set the azure credential via REST.
Patch GatewayDatasource
Data source connectivity
Your report would be always up to date, no need to refresh. - Additon to 2, if using direct query to any other on-premises source, there's no gateway supported like in Power BI Service. Say your report is using an on-premises SQL Server, set up an automation process to load the data from SQL Server into the Azure SQL database via an ETL tool like SSIS, then schdule this automation process to run in a certain interval to update the data.