Business Practice Manual

ERCOT business practices provide supplemental information to explain or communicate the functionality of the ERCOT Systems and Processes. These business practices support the ERCOT ISO's market and operations responsibilities as directed by the Nodal Protocols.

Ancillary Service Market Transactions in the DA and RT Adjust Period
Describes and explains the structure of QSE Ancillary Service Offers submitted for consideration in the Day-Ahead Market and Supplemental Ancillary Services Markets. This Business Practice provides descriptive material and examples of AS Offer submittals
Jun 9, 2023 - doc - 159.5 KB
Current Operating Plan Practices By QSE
Describes ERCOT's expectations regarding Current Operating Plan entries by QSEs.
Jun 28, 2024 - docx - 115.3 KB
Aug 30, 2023 - docx - 157.2 KB
ERCOT Market Notice Communication Process
Describes ERCOT’s process for communicating information to the market as required under the Protocols and Other Binding Documents, and other market-relevant information at ERCOT’s discretion.
Mar 5, 2019 - docx - 51.6 KB
ERCOT and QSE Operations Practices During The Operating Hour
Describes ERCOT's expectation for the management of Generation Resource operations and telemetry data by the QSE and the Resource Owner during the Operating Hour.
Jun 28, 2024 - docx - 466.1 KB
Network Operations Modeling Expectations for TSPs, REs, and QSEs
Describes data submission guidelines for Network Model changes that are submitted by TSPs, REs and QSEs to maintain the accuracy of the ERCOT Network Operations Model.
May 19, 2020 - doc - 2.7 MB
Price Validation and Corrections
This guide is used for performing price validations and corrections on Day Ahead Market (DAM), Real Time Market (RTM), and Supplemental Ancillary Service Market (SASM).
May 3, 2021 - docx - 43.4 KB
Simple Transmission Outage Definition
A simple Transmission Outage is a classification of outage that can be removed from service without effecting LMP prices or causing congestion.
Mar 3, 2011 - doc - 38 KB
Split Generation Resources
Describes registration and protocol application of Generation Resources that are registered, modeled, operated, and settled as Split Generation Resources in the ERCOT market and operation systems.
Aug 19, 2011 - doc - 193.5 KB