That makes sense, I'm in EST. Just to clarify and understand what happened, I believe right after the trip some generators all around the grid picked up the lo

That makes sense, I'm in EST. Just to clarify and understand what happened, I believe right after the trip some generators all around the grid picked up the load (unless UFLS was activated) immediately (around 7:03), we can call these generators support system. Then around 7:05 batteries kicked in with 468 MW, as a support to support system.