FDNY C of F B-28 — Stationary Energy Storage Systems Exam
DNY COF B-28 – CERTIFICATE OF FITNESS FOR SUPERVISION OF
STATIONARY ENERGY STORAGE SYSTEMS | EXAM QUESTIONS AND
CORRECT ANSWERS | 2026/2027
FIRE DEPARTMENT • CITY OF NEW YORK
CERTIFICATE OF FITNESS B-28
Supervision of Stationary Energy Storage Systems (ESS)
1. What does the FDNY B-28 Certificate of Fitness authorize the holder
to supervise?
A. Stationary energy storage systems at a specific premises
B. Mobile energy storage systems citywide
C. Fuel oil storage tanks
D. Diesel emergency generators
ANSWER : A. Stationary energy storage systems at a specific
premises
The B-28 is premises-related and covers indoor and outdoor stationary
systems that are not designated as mobile.
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, FDNY C of F B-28 — Stationary Energy Storage Systems Exam
2. Which Certificate of Fitness is used to supervise mobile energy
storage systems?
A. W-28
B. S-95
C. B-28
D. B-29
ANSWER : A. W-28
The W-28 is the citywide certificate limited to mobile battery systems.
3. The B-28 Certificate of Fitness is valid:
A. Only while the holder is employed by the manufacturer
B. Only at a specific location for the person to whom it is issued
C. At any location in New York State
D. At any location in New York City
ANSWER : B. Only at a specific location for the person to whom it is
issued
The B-28 is premises-specific; the W-28 is the citywide certificate.
4. How many multiple-choice questions are on the B-28/W-28
examination?
A. 60
B. 75
C. 100
D. 50
ANSWER : B. 75
The computer-based exam has 75 multiple-choice questions on a touch-
screen monitor.
5. What minimum score is required to pass the B-28/W-28 exam?
A. 70%
B. 80%
C. 60%
D. 75%
ANSWER : A. 70%
A score of at least 70% correct is required to secure the certificate.
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, FDNY C of F B-28 — Stationary Energy Storage Systems Exam
6. Where is the B-28/W-28 examination administered?
A. FDNY Headquarters, 9 MetroTech Center, Brooklyn
B. Any FDNY firehouse
C. The Department of Buildings, Manhattan
D. Online from home
ANSWER : A. FDNY Headquarters, 9 MetroTech Center, Brooklyn
There is no alternative issuance procedure; the exam is taken at FDNY
Headquarters in Brooklyn.
7. What is the application fee for a new B-28 Certificate of Fitness?
A. $100
B. $15
C. $50
D. $25
ANSWER : D. $25
New applications cost $25; renewals cost $15.
8. How often must the B-28 Certificate of Fitness be renewed?
A. Every year
B. Every 2 years
C. Every 3 years
D. Every 5 years
ANSWER : C. Every 3 years
The B-28/W-28 certificate is on a three-year renewal cycle.
9. What is the renewal fee for a B-28 Certificate of Fitness?
A. $10
B. $25
C. $40
D. $15
ANSWER : D. $15
Renewal costs $15, with an additional penalty for late renewal.
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, FDNY C of F B-28 — Stationary Energy Storage Systems Exam
10. How far in advance does the FDNY send a courtesy renewal notice?
A. 90 days before expiration
B. 1 year before expiration
C. 60 days before expiration
D. 30 days before expiration
ANSWER : A. 90 days before expiration
A courtesy notice is sent 90 days before expiry, but renewal remains the
holder's responsibility.
11. A certificate that has been expired for more than one year:
A. Can be renewed with a $50 penalty
B. Can be renewed with a $25 penalty
C. Will not be renewed and a new exam is required
D. Is renewed automatically
ANSWER : C. Will not be renewed and a new exam is required
Certificates more than one year past expiration cannot be renewed; the
applicant must retest.
12. A renewal submitted more than 90 days but less than one year after
expiration incurs:
A. A $25 penalty in addition to the renewal fee
B. A $100 penalty
C. No penalty
D. Mandatory re-examination
ANSWER : A. A $25 penalty in addition to the renewal fee
Late renewals within the one-year window carry a $25 late penalty plus
the renewal fee.
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DNY COF B-28 – CERTIFICATE OF FITNESS FOR SUPERVISION OF
STATIONARY ENERGY STORAGE SYSTEMS | EXAM QUESTIONS AND
CORRECT ANSWERS | 2026/2027
FIRE DEPARTMENT • CITY OF NEW YORK
CERTIFICATE OF FITNESS B-28
Supervision of Stationary Energy Storage Systems (ESS)
1. What does the FDNY B-28 Certificate of Fitness authorize the holder
to supervise?
A. Stationary energy storage systems at a specific premises
B. Mobile energy storage systems citywide
C. Fuel oil storage tanks
D. Diesel emergency generators
ANSWER : A. Stationary energy storage systems at a specific
premises
The B-28 is premises-related and covers indoor and outdoor stationary
systems that are not designated as mobile.
Page 1 of 58
, FDNY C of F B-28 — Stationary Energy Storage Systems Exam
2. Which Certificate of Fitness is used to supervise mobile energy
storage systems?
A. W-28
B. S-95
C. B-28
D. B-29
ANSWER : A. W-28
The W-28 is the citywide certificate limited to mobile battery systems.
3. The B-28 Certificate of Fitness is valid:
A. Only while the holder is employed by the manufacturer
B. Only at a specific location for the person to whom it is issued
C. At any location in New York State
D. At any location in New York City
ANSWER : B. Only at a specific location for the person to whom it is
issued
The B-28 is premises-specific; the W-28 is the citywide certificate.
4. How many multiple-choice questions are on the B-28/W-28
examination?
A. 60
B. 75
C. 100
D. 50
ANSWER : B. 75
The computer-based exam has 75 multiple-choice questions on a touch-
screen monitor.
5. What minimum score is required to pass the B-28/W-28 exam?
A. 70%
B. 80%
C. 60%
D. 75%
ANSWER : A. 70%
A score of at least 70% correct is required to secure the certificate.
Page 2 of 58
, FDNY C of F B-28 — Stationary Energy Storage Systems Exam
6. Where is the B-28/W-28 examination administered?
A. FDNY Headquarters, 9 MetroTech Center, Brooklyn
B. Any FDNY firehouse
C. The Department of Buildings, Manhattan
D. Online from home
ANSWER : A. FDNY Headquarters, 9 MetroTech Center, Brooklyn
There is no alternative issuance procedure; the exam is taken at FDNY
Headquarters in Brooklyn.
7. What is the application fee for a new B-28 Certificate of Fitness?
A. $100
B. $15
C. $50
D. $25
ANSWER : D. $25
New applications cost $25; renewals cost $15.
8. How often must the B-28 Certificate of Fitness be renewed?
A. Every year
B. Every 2 years
C. Every 3 years
D. Every 5 years
ANSWER : C. Every 3 years
The B-28/W-28 certificate is on a three-year renewal cycle.
9. What is the renewal fee for a B-28 Certificate of Fitness?
A. $10
B. $25
C. $40
D. $15
ANSWER : D. $15
Renewal costs $15, with an additional penalty for late renewal.
Page 3 of 58
, FDNY C of F B-28 — Stationary Energy Storage Systems Exam
10. How far in advance does the FDNY send a courtesy renewal notice?
A. 90 days before expiration
B. 1 year before expiration
C. 60 days before expiration
D. 30 days before expiration
ANSWER : A. 90 days before expiration
A courtesy notice is sent 90 days before expiry, but renewal remains the
holder's responsibility.
11. A certificate that has been expired for more than one year:
A. Can be renewed with a $50 penalty
B. Can be renewed with a $25 penalty
C. Will not be renewed and a new exam is required
D. Is renewed automatically
ANSWER : C. Will not be renewed and a new exam is required
Certificates more than one year past expiration cannot be renewed; the
applicant must retest.
12. A renewal submitted more than 90 days but less than one year after
expiration incurs:
A. A $25 penalty in addition to the renewal fee
B. A $100 penalty
C. No penalty
D. Mandatory re-examination
ANSWER : A. A $25 penalty in addition to the renewal fee
Late renewals within the one-year window carry a $25 late penalty plus
the renewal fee.
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