What is the ERC (European Research Council)? Find more information here:

-ERC website
-Euresearch: the Swiss guide to European research & innovation

Synergy Grant: Are the evaluation panels the same as in the Starting and the Advanced Grants?

No, the panels are not pre-defined. Approximately 80 panel members and chairs will form the step 1 panels, in step 2 the same panel members will be grouped into 5 panels to ensure the best expertise. In step 3 (interview panels), the panels might again be reconfigured for the best expertise for the proposals. So the whole process is quite dynamic and fully depends on the content of the proposals received.