Technology Working Group

Technology Working Group

The Gist ERCOT is creating a new Technology Working Group to stop a repeat of the FFR Advancement fiasco (where the implementation of the FFR Advancement project was delayed by 10 months because ERCOT market participants and their software vendors were unable to adjust to the proposed changes in the Market Participant/ERCOT interface in a…

HCAP(High Offer Cap)

The Gist The HCAP effectively sets the highest price in ERCOT (though it is possible for regional prices to go higher than HCAP due to congestion, the excess is usually minor).  HCAP was initially set at $2250/MWh at nodal market implementation in December 2010 and rose in steps until it reached $9000/MWh on 6/1/15.  During…

SCR811(ERCOT to use intra-hour solar forecast)

The Gist SCR811 Allows ERCOT to include an Intra-Hour PhotoVoltaic Power Forecast (IHPPF) in calculations of the Generation To Be Dispatched (GTBD) value. This should reduce the use of RegUp and RegDown when solar is ramping.  ERCOT will analyze the five-minute out forecast performance and accuracy of projected solar generation ramp direction before the intra-hour…

NPRR1113 Elimination of Double Counting FFR RegUp in AS Imbalance

NPRR1113 Elimination of Double Counting FFR RegUp in AS Imbalance

The Gist ERCOT noticed that RegUp was being double counted in the regulation up component of Controllable Load Resources (CLRs).  This resulted in overpayment to some QSEs (around $13k total).  This NPRR fixes that double counting  Important Actions 1/13/22 CNPRR1113 introduced to PRS and quickly passed on the combo ballot Reference NPRR1113 (ERCOT) Meeting Notes…

NPRR1101 Deploy Offline Non Spin in randomized groups

NPRR1101 Deploy Offline Non Spin in randomized groups

The Gist NPRR1101 was filed by ERCOT as a response to complaints made by generators to NPRR1093 (allow loads to provide NonSpin).  It directs ERCOT to create ~500MW buckets of NonSpin, randomly composed of load resources and off-line generation resources.  Market consensus was that this fixed the perceived unfairness of deploying generators carrying NonSpin before…

Day-Ahead Market Incidents

Day-Ahead Market Incidents

The Gist The Day-Ahead Market (DAM) is a complex (non-convex) beast that on a few occasions breaks down and takes longer than expected to run.  This topic page serves as a log of those events and links to meetings in which they were discussed. Important Actions 2/1/22 ERCOT has DAM delay for Operating Day 2/2/22…

NPRR930 (Advanced Action Notices and Outage Schedule Adjustments)

NPRR930 (Advanced Action Notices and Outage Schedule Adjustments)

The Gist NPRR930 clarifies the process that ERCOT can use to delay or cancel outages.  It first has to post an Advance Action Notice (AAN) a minimum of 24 hours before adjusting a resource’s outage schedule.  Further, resources can change their outage types to Forced to prevent ERCOT from adjusting their outage schedule.  Finally if…