Is there an excel export for vaadin grid. There is one for table but didn’t see one for grid.
To my understanding no, but the TableExport add-on works with Grid partially, see another discussion here.
https://vaadin.com/forum/#!/thread/579717/579716
What you will miss is for example formating of the data with renderers etc.
If you need almost complete Excel compatibility you could check how Spreadsheet fits in your project.