Free CEM Practice Tests (2026)
Start with the free diagnostic to see where you stand, then practice in tutor or timed mode. Full-length simulations match the real CEM.
Diagnostics
CEM Practice Test 1
10 questions · 19 min10 free CEM practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
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CEM Practice Test 2
10 questions · 19 min10 free CEM practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCEM Practice Test 3
10 questions · 19 min10 free CEM practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCEM Practice Test 4
10 questions · 19 min10 free CEM practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCEM Practice Test 5
10 questions · 19 min10 free CEM practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCEM Practice Test 6
10 questions · 19 min10 free CEM practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCEM Practice Test 7
10 questions · 19 min10 free CEM practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCEM Practice Test 8
10 questions · 19 min10 free CEM practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCEM Practice Test 9
10 questions · 19 min10 free CEM practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCEM Practice Test 10
10 questions · 19 min10 free CEM practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCEM Practice Test 11
10 questions · 19 min10 free CEM practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCEM Practice Test 12
10 questions · 19 min10 free CEM practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCEM Practice Test 13
10 questions · 19 min10 free CEM practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCEM Practice Test 14
10 questions · 19 min10 free CEM practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCEM Practice Test 15
10 questions · 19 min10 free CEM practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testHow these CEM practice tests match the real exam
The real Certified Energy Manager (CEM) Exam has 130 questions and a 240-minute time limit. Question types: Multiple choice with one correct answer: 120 scored questions plus 10 unidentified trial questions, drawn from all 14 sections of the CEM Body of Knowledge. No penalty for wrong answers. Each practice test here uses the same question formats, so you get used to how CEM questions are asked before test day.
The tests draw on every CEM content area, weighted like the official outline:
- Energy and Sustainability Policies, Codes and Standards (about 7% of the exam)
- Energy Rates, Tariffs and Supply Options (about 6% of the exam)
- Energy Audits and Instrumentation (about 9% of the exam)
- Energy Accounting and Economics (about 8% of the exam)
- Electrical Power Systems and Motors (about 9% of the exam)
- Lighting Systems (about 6% of the exam)
- HVAC Systems and Building Envelope (about 13% of the exam)
- Building Automation, Controls and Artificial Intelligence Systems (about 8% of the exam)
- Energy Storage Systems (about 4% of the exam)
- Boiler and Steam Systems (about 5% of the exam)
- Distributed Generation & Renewable Energy Systems (about 5% of the exam)
- Industrial Systems (about 7% of the exam)
- Operations, Maintenance and Commissioning (about 9% of the exam)
- Energy Savings Performance Contracting and Measurement & Verification (about 4% of the exam)
Use tutor mode to see the explanation after each answer, or timed mode to practise at real exam pace. Every answer comes with an explanation of why it is right and why the other options are wrong.