What is the main function of the Grid Entity (like ISOs/RTOs or DSOs) in relation to VPPs?

Answer

Procurement; they issue requests for capacity or ancillary services.

The role of the Grid Entity is procurement; they issue requests for capacity or ancillary services, and the VPP acts as a qualified bidder to meet needs like congestion management or frequency control.

What is the main function of the Grid Entity (like ISOs/RTOs or DSOs) in relation to VPPs?
Rolemanagementpower plantsystemresource