The ShieldUI Grid can export data to Excel 2003 (xml) and Excel 2007 (xlsx) formats.
For exporting to XLSX, you need to include the JSZip third-party library. If it is not found, the framework will fall back to the Excel 2003 XML format.
For older browser support (IE8 and IE9), where the save-as options will not be available, a custom server-side file saver script is required. Detailed instructions how to implement and set one up can be found here.