Our company uses Power BI for this very reason. Most of our users are content with what's available in the reports we've built in Power BI. However, a few power users directly connect to the datasets we've created (that also feed the Power BI reports) and can mix and match that data in Excel.

Excel will import datasets from the Power BI client, and you can refresh the data at any time. The nice part of this arrangement is that the whole model is imported. All the relationships between tables, all the added calculation columns, all the measures are there for use by the end user in Excel.

Power BI has been a great solution for our company (~1000 employees).