ERCOT EXAM QUESTIONS WITH CORRECT ANSWERS LATEST UPDATE 2026/2027
What percentage of the Texas grid does ERCOT manage? - Answers 90% of the Texas grid.
Is ERCOT synchronously connected to the rest of the U.S. grid? - Answers No, it is not
synchronously interconnected.
What role does ERCOT play in the bulk power market? - Answers It acts as a central authority
handling transactions in the bulk power market.
What are ERCOT's four main responsibilities? - Answers Maintain reliability of the bulk electric
system, facilitate competitive wholesale markets, facilitate competitive retail markets, ensure
fair and open access to the transmission system.
What types of markets does ERCOT facilitate? - Answers Energy markets, ancillary services, and
congestion management.
What wholesale markets are run by ERCOT? - Answers CRR auction, Bilateral trade, Reliability
Unit Commitment (RUC), Day-ahead market, Real-time market.
When are ancillary services primarily procured? - Answers In the day-ahead market.
What does Regulation Service (RS) do? - Answers Automatically matches demand with supply
every few seconds using SCED.
What is Responsive Reserve Service (RRS)? - Answers A service that responds within seconds
to the loss of a large generator.
What is ERCOT Contingency Reserve Service (ECRS)? - Answers Responds within 10 minutes to
the loss of a large generator.
What are Non-Spinning Reserves? - Answers Resources that respond within 30 minutes, often
due to transmission issues.
What are the three settlement point types in ERCOT? - Answers Resource node, Load zone, Hub.
What is a resource node? - Answers The point where each generator connects to the
transmission system.
What is a load zone? - Answers A geographic grouping of electrical loads.
What is a hub? - Answers A geographic grouping of substations.
What is a bus in ERCOT terminology? - Answers An electric substation.
What is a settlement point price (SPP)? - Answers The calculated electricity price at a specific
virtual/physical grid point for financial transactions.
What percentage of the Texas grid does ERCOT manage? - Answers 90% of the Texas grid.
Is ERCOT synchronously connected to the rest of the U.S. grid? - Answers No, it is not
synchronously interconnected.
What role does ERCOT play in the bulk power market? - Answers It acts as a central authority
handling transactions in the bulk power market.
What are ERCOT's four main responsibilities? - Answers Maintain reliability of the bulk electric
system, facilitate competitive wholesale markets, facilitate competitive retail markets, ensure
fair and open access to the transmission system.
What types of markets does ERCOT facilitate? - Answers Energy markets, ancillary services, and
congestion management.
What wholesale markets are run by ERCOT? - Answers CRR auction, Bilateral trade, Reliability
Unit Commitment (RUC), Day-ahead market, Real-time market.
When are ancillary services primarily procured? - Answers In the day-ahead market.
What does Regulation Service (RS) do? - Answers Automatically matches demand with supply
every few seconds using SCED.
What is Responsive Reserve Service (RRS)? - Answers A service that responds within seconds
to the loss of a large generator.
What is ERCOT Contingency Reserve Service (ECRS)? - Answers Responds within 10 minutes to
the loss of a large generator.
What are Non-Spinning Reserves? - Answers Resources that respond within 30 minutes, often
due to transmission issues.
What are the three settlement point types in ERCOT? - Answers Resource node, Load zone, Hub.
What is a resource node? - Answers The point where each generator connects to the
transmission system.
What is a load zone? - Answers A geographic grouping of electrical loads.
What is a hub? - Answers A geographic grouping of substations.
What is a bus in ERCOT terminology? - Answers An electric substation.
What is a settlement point price (SPP)? - Answers The calculated electricity price at a specific
virtual/physical grid point for financial transactions.
