- Which EEP This Sheet Covers
- Exam Snapshot: Format, Rules and Tools
- Fees, Eligibility and Renewal at a Glance
- The 12 Domains and Their Weight Bands
- Must-Know Facts: The Four Co-Highest Domains
- Must-Know Facts: The Technical Middle
- Economics and Maintenance: Small Bands, Easy Points
- Building Your Open-Book Reference Binder
- Sequencing Your Review by Domain
- Frequently Asked Questions
- The exam has 65 graded multiple-choice questions, a two-hour limit, and all 12 subject sections are mandatory.
- Four domains share the highest 8-12% band: energy production/distribution, utilities and bills, mechanical/HVAC, and renewables/carbon reduction.
- Application and exam cost USD 400; a retest is USD 200; renewal every three years is USD 300.
- The exam is open book with printed references, but computers, tablets and phones are not allowed as reference tools.
Which EEP This Sheet Covers
This cheat sheet is about the Energy Efficiency Practitioner (EEP) credential administered by the Association of Energy Engineers (AEE). The acronym is shared by several unrelated credentials, so confirm that your study materials reference AEE and the Energy Efficiency Practitioner Body of Knowledge before you memorize anything. If you are still orienting yourself, the explainers on what EEP stands for and what EEP certification is cover the basics.
Think of the EEP as a practical, breadth-first credential. It tests whether you can speak the language of energy management across the whole building and utility landscape: bills, boilers, motors, lighting, controls, economics and renewables. It does not ask you to derive anything at a research level. It asks whether you can recognize the right concept, use the right formula, and find the right reference quickly.
Exam Snapshot: Format, Rules and Tools
| Item | What to Remember |
|---|---|
| Administering body | Association of Energy Engineers (AEE) |
| Question count | 65 graded multiple-choice questions |
| Time limit | Two hours |
| Coverage | All 12 subject sections are mandatory; there is no choosing your strongest areas |
| Reference policy | Open book / open notes with printed references |
| Calculator | Handheld calculator without internet or Bluetooth capability |
| Electronic references | Not permitted |
| Delivery | In-person testing associated with approved training, or remote proctoring through ProctorU using Guardian Browser |
Two hours for 65 questions works out to a little under two minutes per item. That is comfortable for definitional questions and tight for multi-step calculations, which is exactly why open-book prep is about speed of lookup rather than depth of memorization. For a candid read on the pacing and difficulty, see how hard the EEP exam is.
Fees, Eligibility and Renewal at a Glance
Fee table
| Fee | Published US Amount |
|---|---|
| Application and examination | USD 400 |
| Retest | USD 200 |
| Three-year renewal | USD 300 |
| Approved preparatory training | Priced separately by the provider |
The training line item is the one candidates forget when budgeting. Because preparatory training is a prerequisite and is priced separately, your true all-in cost is higher than the exam fee alone. The full breakdown lives in the EEP certification cost guide.
Eligibility checklist
Everyone must complete AEE-approved preparatory training. On top of that, you need to meet at least one of these routes:
- An accredited two-year technical degree or four-year degree
- Current employment in energy efficiency, energy management, or building/facility operations and maintenance
- At least one year of relevant experience
- Active participation in an energy, sustainability or operations/maintenance education program
- Military-veteran status
The routes are deliberately broad, which makes the EEP an accessible entry point for technicians, facility staff and early-career professionals. For the full qualification logic, read EEP requirements and how to qualify, and for how the training piece works, see EEP training.
Renewal in one line
Certification runs on a three-year cycle. To renew you need 10 AEE professional renewal credits, a documented renewal submission, and the USD 300 renewal fee. Start logging credits early rather than scrambling in year three.
The 12 Domains and Their Weight Bands
The official subject areas come from the AEE Body of Knowledge, and the weights are published as ranges, not fixed percentages. Do not read a range as a guaranteed number of questions; use it to decide where your review hours earn the most return.
| Domain | Subject Area | Weight Band |
|---|---|---|
| 1 | Introduction to Energy Production, Transmission and Distribution | 8-12% |
| 2 | Building Utilities & Energy Bills | 8-12% |
| 3 | Economics | 5-7% |
| 4 | Energy Auditing and Instrumentation | 6-10% |
| 5 | Electrical Systems | 6-10% |
| 6 | Motors & Drives | 6-10% |
| 7 | Lighting | 6-10% |
| 8 | Thermal Energy Systems | 6-10% |
| 9 | Building Automation Systems | 6-10% |
| 10 | Mechanical Systems & HVAC | 8-12% |
| 11 | Maintenance | 5-7% |
| 12 | Renewable Energy / Carbon Reduction | 8-12% |
Four domains tie for the highest band, and together they represent a large share of the exam. Six domains sit in the 6-10% middle, and two (Economics and Maintenance) occupy the smallest 5-7% band. For a deeper walk through each area, see the complete guide to all 12 EEP content areas.
Must-Know Facts: The Four Co-Highest Domains
Domain 1: Introduction to Energy Production, Transmission and Distribution (8-12%)
Know how energy gets from source to site, and what that means for the building owner.
- The path from generation through transmission and distribution to the meter
- Why losses occur along the delivery chain and why on-site efficiency is worth more than it first appears
- Primary fuel types and how delivered energy differs from the energy consumed at the source
- Basic vocabulary: grid, substation, demand, load, capacity
Domain 2: Building Utilities & Energy Bills (8-12%)
Bill literacy is one of the most exam-friendly skills you can build, because it is concrete and calculable.
- Distinguish energy charges (consumption) from demand charges (peak rate of use)
- Understand how rate structures, billing periods and load patterns drive cost
- Be able to read a bill and identify where savings would actually land
- Recognize that reducing peak demand and reducing total consumption are different strategies with different payoffs
Domain 10: Mechanical Systems & HVAC (8-12%)
HVAC is the largest energy consumer in most commercial buildings, and the exam reflects that.
- Core equipment: chillers, boilers, air handlers, pumps, fans, cooling towers
- Distribution concepts: constant versus variable flow, ventilation, economizers
- Efficiency measures such as controls strategies, equipment staging and heat recovery
- How refrigeration-cycle fundamentals connect to efficiency ratings
Domain 12: Renewable Energy / Carbon Reduction (8-12%)
This domain connects efficiency work to broader decarbonization goals.
- Common on-site renewable technologies and where each makes sense
- How efficiency measures reduce the size and cost of any renewable system you add
- Carbon-reduction concepts and the logic of reducing demand before supplying clean energy
- Qualitative trade-offs: reliability, siting, intermittency, storage
Must-Know Facts: The Technical Middle
Six domains share the 6-10% band. Individually they look modest, but collectively they form the technical heart of the exam. Master the vocabulary and the standard calculations in each.
Energy Auditing and Instrumentation (Domain 4)
Know the audit levels and what each delivers, the sequence of a typical audit (walk-through, data collection, analysis, recommendations), and the instruments used to gather data: power meters, data loggers, infrared cameras, combustion analyzers, light meters. Questions often ask which instrument fits which measurement, so build a quick matching table for your binder.
Electrical Systems (Domain 5)
Be comfortable with the relationships among voltage, current, resistance, real power, apparent power and power factor. Know why poor power factor matters on a bill, what corrects it, and how three-phase systems are described. A one-page formula sheet here pays for itself.
Motors & Drives (Domain 6)
Focus on motor efficiency classes, the cost of oversizing, and the role of variable frequency drives. Understand why speed reduction saves disproportionate fan and pump energy (the affinity laws), and be ready to apply them in a calculation rather than just recite them.
Lighting (Domain 7)
Know the key metrics (lumens, efficacy, color temperature, color rendering), the major lamp and fixture technologies, and the control strategies that reduce runtime: occupancy sensing, daylight harvesting, scheduling. Expect questions that compare technologies on efficacy and lifetime.
Thermal Energy Systems (Domain 8)
This covers steam, hot water and heat-transfer topics: boiler efficiency and combustion, insulation, steam traps, heat exchangers and heat recovery. Know the common loss mechanisms and the standard measures that reduce them.
Building Automation Systems (Domain 9)
Understand sensors, controllers, actuators and networks, plus the strategies controls enable: setpoint reset, scheduling, optimal start, demand limiting. A frequent theme is that controls are only as good as their commissioning and ongoing tuning.
Key Takeaway
For the middle six domains, aim for "formula plus concept." You should know each key equation, what each variable means, and which real-world measure it informs. That combination answers most calculation questions in under two minutes.
Economics and Maintenance: Small Bands, Easy Points
Domain 3: Economics (5-7%)
Small weight, high predictability. These questions are usually calculable and rewarding if you have practiced.
- Simple payback: cost divided by annual savings, and its main limitation (it ignores savings after payback and the time value of money)
- Life-cycle cost thinking and why first cost alone misleads
- Time-value-of-money basics: present value, discounting and return measures
- How to compare projects with different lifetimes and cash-flow patterns
Domain 11: Maintenance (5-7%)
Maintenance questions tend to be conceptual and practical.
- Preventive, predictive and corrective approaches, and when each is appropriate
- How deferred maintenance silently erodes efficiency
- Condition-monitoring techniques and the role of commissioning and retro-commissioning
- The link between good operations and sustained savings
These two domains are the best place to bank dependable points, because the questions rarely require anything beyond clear definitions and a handful of standard calculations.
Building Your Open-Book Reference Binder
Open book does not mean easy. It means the exam rewards organization. Since only printed references are allowed, the binder you assemble is effectively your second brain, and the two-hour clock punishes anything you have to hunt for.
- Tab by domain. Twelve tabs, matching the official subject areas, so you can jump instantly.
- Lead each tab with a one-page summary of definitions and formulas, followed by supporting detail.
- Keep a master formula sheet at the front for payback, power relationships, affinity laws and unit conversions.
- Add a unit-conversion page covering common energy, power and flow units, since errors here are easy and expensive.
- Mark your own weak spots with sticky flags so you know where to slow down.
- Confirm the printed-material rules with AEE before exam day, and pack a compliant handheld calculator.
Sequencing Your Review by Domain
Generic study advice is everywhere; what matters here is the order. A sensible sequence front-loads the four co-highest domains, then moves through the technical middle, then finishes with the small bands and full mock exams.
Utilities, Bills and the Delivery Chain
- Domains 1 and 2: delivery path, rate structures, demand versus energy charges
- Practice reading sample bills and locating savings
HVAC and Renewables
- Domains 10 and 12: equipment, controls strategies, on-site renewables, carbon logic
- Start your binder tabs while the material is fresh
Electrical, Motors, Lighting
- Domains 5, 6 and 7: power relationships, VFDs and affinity laws, lighting metrics
- Drill the calculations until they take under two minutes
Thermal, Controls, Auditing
- Domains 4, 8 and 9: instruments, boilers and heat recovery, building automation
Economics, Maintenance and Mock Exams
- Domains 3 and 11, then full 65-question timed runs using only your binder
- Review every miss and update your reference pages
For a fuller plan, see the EEP study guide. If you are weighing whether the effort pays off, the ROI analysis and the salary guide put the credential in career context, and EEP jobs shows the kinds of roles where it is recognized.
Frequently Asked Questions
The exam contains 65 graded multiple-choice questions with a two-hour time limit. All 12 subject sections are mandatory, so every domain is represented.
Yes, it is open book and open notes with printed references. You may use a handheld calculator without internet or Bluetooth, but electronic reference materials, including computers, tablets and phones, are not permitted as reference tools.
Four domains share the highest published band of 8-12%: energy production, transmission and distribution; building utilities and energy bills; mechanical systems and HVAC; and renewable energy/carbon reduction. These are ranges, not fixed percentages.
The published US application and examination fee is USD 400, a retest is USD 200, and the three-year renewal is USD 300. Approved preparatory training is priced separately.
Certification follows a three-year cycle. Renewal requires 10 AEE professional renewal credits, a documented renewal submission and the renewal fee.
Keep this sheet beside your binder, confirm the current rules with AEE, and use the EEP practice exams to turn these facts into reflexes. When you are ready to lock in a date, check the exam dates and scheduling guide, and review the passing score breakdown and pass rate analysis to set realistic expectations.