NERC TRANSMISSION OPERATOR (TOP) NEWEST 2026
ACTUAL EXAM| NERC TOP SYSTEM OPERATIONS
EXAM REVIEW WITH COMPLETE REAL EXAM
QUESTIONS AND CORECT VERIFIED ANSWERS/
ALREADY GRADED A+ (BRAND NEW!!)
1. According to NERC standards, the primary responsibility of a
Transmission Operator (TOP) is to:
A) Ensure the Balancing Authority maintains ACE within limits
B) Operate the transmission system within IROLs and SOLs
C) Schedule interchange transactions
D) Maintain primary frequency response
Correct Answer: B
Rationale: The TOP’s core responsibility is real-time monitoring
and control of the transmission system to ensure reliability within
Interconnection Reliability Operating Limits (IROLs) and System
Operating Limits (SOLs).
1
,2. A Transmission Operator must notify its Reliability Coordinator
(RC) within how many minutes of discovering an SOL or IROL
violation?
A) Immediately, but no more than 15 minutes
B) 30 minutes
C) 60 minutes
D) 120 minutes
Correct Answer: B
Rationale: NERC TOP-002-4 requires the TOP to notify the RC
within 30 minutes of identifying a violation of an SOL or IROL,
unless corrected within that timeframe.
3. If an IROL is exceeded, the TOP must initiate a remedy within:
A) 15 minutes
B) 30 minutes
C) 45 minutes
D) 60 minutes
Correct Answer: B
Rationale: Per TOP-001-4, if an IROL is exceeded, the TOP must
2
,take immediate corrective action within 30 minutes to bring the
system back within limits.
4. The TOP is responsible for maintaining transmission system
operating limits under which of the following conditions?
A) Normal and emergency conditions
B) Normal, contingency, and extreme emergency conditions
C) Only normal conditions
D) Only during contingency conditions
Correct Answer: B
Rationale: The TOP plans and operates for normal, contingency
(N-1), and extreme emergency conditions per TOP standards.
5. A “System Operating Limit” (SOL) is the maximum flow on a
facility that can be operated without violating:
A) Thermal limits only
B) Voltage limits only
C) Stability limits only
D) Thermal, voltage, or stability limits
Correct Answer: D
Rationale: SOLs are defined as the maximum flow or loading
3
, level a facility can withstand without breaching thermal, voltage,
or stability criteria.
6. The TOP has the authority to curtail or interrupt firm
transmission service when:
A) It is economically beneficial
B) Directed by the Balancing Authority
C) Necessary to maintain system reliability
D) Requested by a neighboring TOP
Correct Answer: C
Rationale: Per TOP-001-4, reliability trumps commercial
arrangements. The TOP may curtail firm transmission service if
needed to prevent an IROL violation.
7. Which entity is responsible for ensuring that the TOP has
current SOLs and IROLs?
A) Balancing Authority
B) Planning Authority
C) Reliability Coordinator
D) Transmission Planner
4
ACTUAL EXAM| NERC TOP SYSTEM OPERATIONS
EXAM REVIEW WITH COMPLETE REAL EXAM
QUESTIONS AND CORECT VERIFIED ANSWERS/
ALREADY GRADED A+ (BRAND NEW!!)
1. According to NERC standards, the primary responsibility of a
Transmission Operator (TOP) is to:
A) Ensure the Balancing Authority maintains ACE within limits
B) Operate the transmission system within IROLs and SOLs
C) Schedule interchange transactions
D) Maintain primary frequency response
Correct Answer: B
Rationale: The TOP’s core responsibility is real-time monitoring
and control of the transmission system to ensure reliability within
Interconnection Reliability Operating Limits (IROLs) and System
Operating Limits (SOLs).
1
,2. A Transmission Operator must notify its Reliability Coordinator
(RC) within how many minutes of discovering an SOL or IROL
violation?
A) Immediately, but no more than 15 minutes
B) 30 minutes
C) 60 minutes
D) 120 minutes
Correct Answer: B
Rationale: NERC TOP-002-4 requires the TOP to notify the RC
within 30 minutes of identifying a violation of an SOL or IROL,
unless corrected within that timeframe.
3. If an IROL is exceeded, the TOP must initiate a remedy within:
A) 15 minutes
B) 30 minutes
C) 45 minutes
D) 60 minutes
Correct Answer: B
Rationale: Per TOP-001-4, if an IROL is exceeded, the TOP must
2
,take immediate corrective action within 30 minutes to bring the
system back within limits.
4. The TOP is responsible for maintaining transmission system
operating limits under which of the following conditions?
A) Normal and emergency conditions
B) Normal, contingency, and extreme emergency conditions
C) Only normal conditions
D) Only during contingency conditions
Correct Answer: B
Rationale: The TOP plans and operates for normal, contingency
(N-1), and extreme emergency conditions per TOP standards.
5. A “System Operating Limit” (SOL) is the maximum flow on a
facility that can be operated without violating:
A) Thermal limits only
B) Voltage limits only
C) Stability limits only
D) Thermal, voltage, or stability limits
Correct Answer: D
Rationale: SOLs are defined as the maximum flow or loading
3
, level a facility can withstand without breaching thermal, voltage,
or stability criteria.
6. The TOP has the authority to curtail or interrupt firm
transmission service when:
A) It is economically beneficial
B) Directed by the Balancing Authority
C) Necessary to maintain system reliability
D) Requested by a neighboring TOP
Correct Answer: C
Rationale: Per TOP-001-4, reliability trumps commercial
arrangements. The TOP may curtail firm transmission service if
needed to prevent an IROL violation.
7. Which entity is responsible for ensuring that the TOP has
current SOLs and IROLs?
A) Balancing Authority
B) Planning Authority
C) Reliability Coordinator
D) Transmission Planner
4
