Re: Export new list items to existing table in Excel file once daily
Hey @samclark6
Yes, this is possible. First, I would add a new column to your SharePoint list and call it "Processed", make it a Yes/No column.
Then in Power Automate create a scheduled cloud flow, to run at whatever frequency you like.
Next step, get the items from the SharePoint list, an in the Filter query section put in Processed eq 'false', like below

This will get you all of the items that haven't been added to the Excel spreadsheet.
Next step, Add a row to a table:

This step will be automatically added into an Apply to Each section, under this add a Update Item action, and set the Processed field to Yes:

The entire flow is below:

If I have helped you solving your issues, please can you thumbs up this reply and accept it as a solution.
Thanks !