- What the PVIS Credential Actually Is
- Who Issues It and How the Exam Is Delivered
- The Eligibility Gate: What You Must Prove Before Testing
- Exam Format, Scoring, and the NEC Reference Rule
- The 13 Weighted Domains, Explained
- Fee Structure at a Glance
- Sequencing Your Preparation Around the Weights
- Keeping the Credential: Three-Year Renewal
- What the Issuer Does Not Publish
- Frequently Asked Questions
- PVIS is NABCEP's PV Installer Specialist board certification: 70 multiple-choice questions, 60 scored, four hours.
- The passing score is 70 on a 0-99 scaled score, not 70 percent correct.
- Application plus exam costs $500 before training; retakes are $275 and recertification is $390.
- Safeguard against hazards and Install grounding & bonding are the joint heaviest domains at 10% each.
What the PVIS Credential Actually Is
The PV Installer Specialist (PVIS) is a board certification from the North American Board of Certified Energy Practitioners (NABCEP). It is aimed at people who physically build photovoltaic systems and make decisions while doing so: running conductors, bonding equipment, landing interconnections, and setting modules. It is a credential about installation judgment, not design or sales.
If you are still orienting yourself on the terminology, our explainers on what PVIS certification is and what PVIS stands for cover the basics. This article goes one level deeper: how the credential is structured, what it demands, and how to approach it strategically.
Who Issues It and How the Exam Is Delivered
NABCEP sets the standards and awards the credential. Meazure Learning handles examination delivery. Initial examinations are available through test-center computer-based testing or live remote proctoring, so you can choose between a testing facility and sitting the exam from an approved remote setup.
Retakes deserve a caution. The 2025 handbook's delivery table lists PVIS retakes as test-center computer-based testing, while the scheduling page's broader remote-proctoring wording is not retake-specific. Do not assume a retake can be taken remotely. Confirm the delivery method against the Notice to Schedule you receive. For timing mechanics, see our guide to PVIS exam dates and scheduling.
Eligibility windows to watch
Your exam eligibility lasts one year from application approval. NABCEP's scheduling page also references a six-month Notice-to-Schedule deadline, but the sources are not perfectly consistent about when that six-month clock starts. The safe approach is to treat approval day as day one and schedule early, then verify every deadline printed on your own Notice to Schedule.
The Eligibility Gate: What You Must Prove Before Testing
PVIS is not a "study and sit" exam. You qualify first, with documentation, and only then do you test. The full breakdown lives in our PVIS requirements guide, but the essentials are below.
| Requirement | What NABCEP Expects |
|---|---|
| Age and conduct | 18 or older; signed ethics agreement |
| Safety training | OSHA 10 Construction or a government equivalent |
| Advanced training | 24 contact hours within five calendar years: 18 hours of PVIS-JTA content through an accepted or accredited institution, plus 6 hours of NEC |
| Installation experience | Decision-making role on projects worth at least six credits, completed in the preceding two calendar years |
| Project size | Each qualifying system at least 1 kW DC; systems from 1 to 999 kW earn two credits, 1 MW and above earn three |
| Documentation | Final permits or inspection evidence, system summaries, supervisor or customer contacts, and signed decision-making-role documentation |
| Veterans | A separately documented pathway exists |
Exam Format, Scoring, and the NEC Reference Rule
Structure of the test
The exam contains 70 multiple-choice questions, each with four answer choices. Of those, 60 are scored and 10 are unidentified, unscored pilot items. You will not know which is which, so treat every question as if it counts. You have four hours, the exam is in English, and the scored questions are equally weighted. It is a knowledge exam, not a hands-on performance test. If you are wondering about difficulty, our PVIS difficulty guide unpacks what makes the questions challenging.
The passing score is scaled
The passing score is 70 on a scaled range of 0 to 99. That is not 70 percent correct, and you should not try to back-calculate a number of questions you can miss. Read our passing score explainer for what scaling means in practice.
Calculator and NEC rules
You get an on-screen basic scientific calculator. A personal calculator is not allowed. The National Electrical Code is the only permitted reference, and the exam is built on the 2017 NEC. Under the current NABCEP FAQ you can use the electronic PDF provided during the exam, or bring a compliant softbound or spiral-bound physical NEC of any year. Pre-exam highlighting is allowed. Notes, tabs, inserted materials, and photocopies are not.
Key Takeaway
Even if your training course taught a newer code cycle, study to the 2017 NEC for this exam. A newer course code edition does not mean the exam changed. If you bring a physical book, practice navigating it fast; with highlighting as your only aid, familiarity with article layout is your real advantage.
Approved accommodations are available. Follow the instructions in your Notice to Schedule, since delivery-specific arrangements differ between test-center and remote sittings.
The 13 Weighted Domains, Explained
The exam is built from 13 headings in NABCEP's PV specialist job task analysis. These are official examination objectives, not an unweighted training curriculum, so the weights tell you where scored questions concentrate. Note that the published weights add up to 98%, not 100%; the remaining 2% is not assigned to any domain and should not be invented. Our complete domains guide goes deeper on each area, and the summary below highlights what matters most.
| Domain | Weight |
|---|---|
| 1. Develop safety plan | 8% |
| 2. Safeguard against hazards | 10% |
| 3. Install raceways | 7% |
| 4. Install electrical equipment | 8% |
| 5. Install DC PV system conductors | 8% |
| 6. Install AC PV system conductors | 8% |
| 7. Install grounding & bonding | 10% |
| 8. Complete utility interconnection point | 8% |
| 9. Install system monitoring, control, and communication hardware | 3% |
| 10. Install battery equipment | 7% |
| 11. Install ground-mounted structure | 5% |
| 12. Install building-mounted system | 8% |
| 13. Install PV modules | 8% |
Safeguard against hazards (10%) and Develop safety plan (8%)
Together these safety domains carry 18% of the blueprint. Expect scenario questions where the correct answer is the safest sequence of actions, not just a code citation.
- Recognizing electrical, fall, and thermal hazards specific to PV work
- Knowing that PV arrays remain energized in daylight and what that means for work procedures
- Linking a written safety plan to the conditions of a particular site
Install grounding & bonding (10%)
Tied for the single heaviest domain. Grounding and bonding questions tend to reward precise vocabulary: equipment grounding versus system grounding, and bonding versus grounding electrode connections.
- Equipment grounding conductor sizing and continuity concepts
- Bonding of metallic raceways, racking, and module frames
- Where the 2017 NEC places requirements for PV grounding and bonding
DC and AC conductors (8% each) plus raceways (7%)
These three domains cover 23% of the exam and share a mathematical, code-heavy flavor.
- Conductor selection, ampacity, and temperature and conduit-fill considerations
- Proper wire management, connectors, and termination practices
- Distinguishing DC-side from AC-side installation requirements
Electrical equipment, interconnection, and batteries (8%, 8%, 7%)
This cluster covers the hardware between the array and the grid.
- Installing inverters, disconnects, combiners, and overcurrent protection
- Completing the utility interconnection point correctly
- Installing battery equipment, including ventilation, spacing, and protection concerns
Mounting and modules: ground-mounted (5%), building-mounted (8%), modules (8%)
Structural and mechanical content makes up 21% of the exam. Building-mounted work outweighs ground-mounted work, so roof attachment, flashing, and weatherproofing deserve more of your time than foundations.
- Module handling, orientation, and secure mounting
- Roof-penetration methods and weatherproofing
- Structure requirements for ground-mounted arrays
Monitoring, control, and communication hardware (Domain 9) is only 3%, so it should not consume your calendar. Learn the basics, then spend your time on higher-yield areas. For a condensed review, try our PVIS cheat sheet.
Fee Structure at a Glance
| Item | Amount (USD) |
|---|---|
| Application fee | $125 |
| Examination fee | $375 |
| Total before training | $500 |
| Retake | $275 |
| Recertification | $390 |
| Additional international testing fee (outside the United States and Canada) | $75 |
Remember that the $500 does not include the required 24 contact hours of training or the OSHA 10 card, which are separate costs. Our PVIS certification cost breakdown helps you budget the full path, and our PVIS training overview explains how to choose coursework that satisfies the 18 JTA hours.
Sequencing Your Preparation Around the Weights
Because the exam is knowledge-based and domain-weighted, your schedule should follow the blueprint rather than the order of a textbook. Here is one way to map domains to weeks, with the reasoning attached. For a fuller plan, see our PVIS study guide.
Safety and code navigation
- Domains 1 and 2 (18% combined): safety plans and hazard control
- Learn how the 2017 NEC is organized so later weeks go faster
Grounding and the conductor domains
- Domain 7 (10%) first, while it is fresh
- Domains 5 and 6: DC and AC conductors
- Domain 3: raceways and conduit-related rules
Equipment, interconnection, and storage
- Domains 4, 8, and 10
- Work through one-line diagrams from source to grid connection
Mounting, modules, and full practice
- Domains 11, 12, and 13, emphasizing building-mounted work
- Light pass on Domain 9, then timed mixed-domain practice using the PVIS practice test
The logic: safety and grounding come first because they carry the most weight and underpin everything else, while the lowest-weighted domain gets only a light pass. When you review practice results, track misses by domain rather than by total score, so you know whether the gap is in a 10% area or a 3% one.
Keeping the Credential: Three-Year Renewal
PVIS certification is valid for three years, and you apply for renewal during year three. The recertification fee is $390. NABCEP requires 30 continuing education hours, broken down as follows:
- 6 hours of NEC content
- 12 hours of PVIS JTA content
- 12 hours of renewable energy content, which must include 2 hours of building or fire code
On top of the CE hours, you must document continuing industry involvement through one of four routes: decision-making on three completed installations during the cycle, 120 qualifying teaching hours, one year of qualifying business or training leadership, or 36 hours of qualifying industry leadership. Signed evidence and ethics compliance are required. Plan your CE from the day you pass, rather than scrambling in year three.
What the Issuer Does Not Publish
Candidates often ask about pass rates and pay. The retrieved NABCEP materials do not establish a credential-specific pass rate or a certification-only salary premium for PVIS, so any precise figure you see circulating should be treated skeptically. We explain how to think about this honestly in our articles on the PVIS pass rate, the PVIS salary picture, and whether the certification is worth it. If you are weighing career paths, our overview of PVIS jobs describes the kinds of employers, such as solar installation contractors and electrical contractors with PV divisions, where installation credentials are relevant.
Key Takeaway
Judge the credential by what you can verify: the documented prerequisites, the weighted blueprint, and the fee schedule. Value claims without a source behind them are marketing, not data.
Frequently Asked Questions
No. It is a multiple-choice knowledge exam with 70 questions, 60 scored and 10 unscored pilot items, over four hours. Your hands-on competence is evaluated earlier, through the documented installation experience required to qualify.
The exam reference edition is the 2017 NEC. You may use the electronic PDF provided or a compliant softbound or spiral-bound physical NEC of any year, with pre-exam highlighting only. Newer training course code editions do not change the exam's reference edition.
It is a scaled score on a 0-99 scale, not 70 percent of questions answered correctly. Because scaling is involved, focus on mastering all 13 domains rather than targeting a raw question count.
The application fee is $125 and the exam fee is $375, totaling $500 before training costs. A retake is $275, and candidates testing outside the United States and Canada pay an additional $75 international fee.
Three years. You apply for recertification during year three for $390, completing 30 continuing education hours and documenting continuing industry involvement through an accepted route.