The BIGGEST problem with clean energy

One major advantage for lithium ion storage is the speed at which we can deploy the unit.  I worked on a team that was able to produce a 250 ms response time (1/4 of 60 hz cycle) for a full 50 MW deployment.  BESS can be helpful from an ancillary service perspective focusing around fast response for grid frequency deviations.  ERCOT is currently working on this Fast Frequency Response (FFR) market as a subset of Responsive Reserve (RR).  The name of the game is frequency recovery and having many units throughout the grid being on standby for this would be a huge advantage.