Ancillary Services

Ancillary Services is a graphical representation of the services necessary to support the transmission of energy to Loads and the reliable operation of the Bulk Electric System.

Last Updated:


The times and the Last Updated timestamp displayed in this dashboard are presented in Central Daylight Time (CDT) (UTC -5). If you are viewing from another time zone, the times are not automatically converted to yours at this time. This is a known issue that ERCOT is working to correct.

This dashboard provides sparklines (small line charts) of Regulation Up (Reg Up), Regulation Down (Reg Down), Responsive Reserve (RRS), and Non-Spinning Responsive Reserve (NSRS) over the past two hours, with each current value listed numerically at the right of each sparkline.

It also provides a graphical representation of system frequency over the past two hours.