- Why There Is No Official PVIS Pass Rate
- What the Available Data Does Show
- How the 70 Scaled Score Works
- The Filter Before the Exam: Who Gets to Sit
- Exam Mechanics That Shape Outcomes
- Where the Points Are: Domain Weights
- The 2017 NEC Factor
- Retake Economics and Eligibility Windows
- A Domain-Ordered Prep Plan
- Frequently Asked Questions
- The issuer sources checked do not publish a credential-specific pass rate for PV Installer Specialist (PVIS).
- The passing score is 70 on a 0-99 scaled range, not 70 percent correct.
- Safeguard against hazards and Install grounding & bonding are the joint largest domains at 10% each.
- The exam is 70 multiple-choice questions in 4 hours; 60 are scored and 10 are unscored pilot items.
Why There Is No Official PVIS Pass Rate
Candidates searching for a pass-rate percentage for the NABCEP PV Installer Specialist (PVIS) Board Certification tend to find the same thing: nothing authoritative. The issuer materials we checked, including the Certification Handbook (2025 Update), the FAQ page, and the Job Task Analysis, do not state a credential-specific pass rate. Any figure you see quoted on a forum or aggregator site without a primary source should be treated as unverified.
That matters because pass-rate numbers are often repeated from other certifications that happen to share an acronym. This page covers only the NABCEP PV Installer Specialist, and we will not borrow statistics from any other credential. If you want the broader picture of difficulty, see our guide on how hard the PVIS exam is, which approaches the question through content and format rather than an unsupported percentage.
What the Available Data Does Show
If we cannot cite a pass rate, what can we say with confidence? The published structure of the exam tells you a great deal about where candidates succeed or struggle:
- Format: 70 multiple-choice questions, four answer choices each, 4 hours total.
- Scoring: 60 questions count toward your score; 10 are unidentified pilot items that do not.
- Nature of the test: English-language, equally weighted scored questions. It is not a hands-on performance examination.
- Passing standard: 70 on a scaled range of 0-99.
- Open reference: The NEC is the only permitted reference material.
Taken together, these facts describe a knowledge exam that rewards applied code fluency and installation judgment rather than memorized trivia. For a deeper breakdown of each content area, read our complete guide to all 13 PVIS exam domains.
How the 70 Scaled Score Works
One of the most common misreadings of PVIS results comes from the passing score itself. The standard is 70 scaled on a 0-99 scale. It is not 70 percent correct. Scaled scoring exists so that results remain comparable across different exam forms, which may vary slightly in difficulty. The issuer does not publish a simple conversion from raw correct answers to scaled score in the sources we reviewed, so you should not assume a specific number of questions you can miss.
The practical takeaway: do not plan around a guessed cut-off like "I can miss 18 questions." Plan to be competent across every domain, with extra depth in the heavily weighted ones. Our dedicated article on the PVIS passing score goes into the scaled-score concept in more detail.
Key Takeaway
Because only 60 of the 70 questions are scored and you cannot tell which 10 are pilot items, treat every question as if it counts. Do not spend a long time worrying that a strange question is "the unscored one."
The Filter Before the Exam: Who Gets to Sit
Whatever the true pass rate is, it describes a population that has already cleared significant prerequisites. That selection effect is a major reason raw pass statistics for experience-gated credentials can be misleading when compared with open-enrollment exams. To sit for the PVIS exam, an applicant must show:
- Age 18 or older and agreement to the ethics requirements.
- OSHA 10 Construction (or a government equivalent).
- 24 advanced contact hours completed within five calendar years: 18 hours of PVIS-JTA training through an accepted or accredited institution, plus 6 hours on the NEC.
- Decision-making installation experience worth at least six project credits, from projects completed in the preceding two calendar years, each at least 1 kW DC.
Project credits scale with size: systems from 1 to 999 kW earn two credits, and systems of 1 MW or more earn three. You will need final permit or inspection evidence, system summaries, supervisor or customer contacts, and signed documentation of your decision-making role. A separately documented veterans pathway also exists. The full list is in our PVIS requirements guide.
The upshot is that people who sit the exam are generally working installers who have documented real project responsibility. If you have not yet assembled your application, that process is as much a part of your "pass rate" as the exam itself, because an incomplete application never reaches the testing stage.
Exam Mechanics That Shape Outcomes
Delivery and scheduling
The initial examination is delivered by Meazure Learning through either test-center computer-based testing or live remote proctoring. For retakes, the 2025 handbook delivery table lists PVIS retakes as test-center CBT, while the current scheduling page uses broader live-remote-proctoring wording that is not retake-specific. Rather than assume, confirm your retake delivery method against your Notice to Schedule. Details on timing are in our article on PVIS exam dates and scheduling.
The reference and calculator rules
Under the current issuer FAQ, the NEC is the only reference permitted. You receive an electronic PDF, or you may bring a compliant softbound or spiral-bound physical NEC of any year. You may highlight beforehand, but notes, tabs, inserted materials, and photocopies are not allowed. This specific FAQ permission qualifies the older handbook's generic prohibition on personal books. A basic scientific calculator is provided on screen; personal calculators are not allowed.
Timing
Four hours for 70 questions is generous on paper, roughly three and a half minutes per question. The real risk is not running out of time on easy items; it is burning time hunting through the NEC for a table you have never located before. Familiarity with the code book's layout is a time-management skill in its own right.
Where the Points Are: Domain Weights
The official examination specification lists 13 weighted headings. One quirk worth knowing: the published weights total 98%, not 100%. We retain them exactly as published rather than guessing where the missing 2% belongs. These are exam objectives, not an unweighted training curriculum, so your study time should reflect the weights.
| Domain | Weight |
|---|---|
| Develop safety plan | 8% |
| Safeguard against hazards | 10% |
| Install raceways | 7% |
| Install electrical equipment | 8% |
| Install DC PV system conductors | 8% |
| Install AC PV system conductors | 8% |
| Install grounding & bonding | 10% |
| Complete utility interconnection point | 8% |
| Install system monitoring, control, and communication hardware | 3% |
| Install battery equipment | 7% |
| Install ground-mounted structure | 5% |
| Install building-mounted system | 8% |
| Install PV modules | 8% |
Safeguard against hazards (10%)
Joint largest domain. Expect scenario-style questions on recognizing and controlling jobsite risk.
- Fall protection and rooftop hazards
- Electrical shock and arc hazards on energized PV circuits
- Applying controls before work begins, not after an incident
Install grounding & bonding (10%)
The other joint largest domain, and a place where code-book fluency pays off directly.
- Equipment grounding versus system grounding in PV circuits
- Bonding of metallic components, racking, and modules
- Locating the relevant 2017 NEC provisions quickly
Together these two domains account for 20% of the published weighting, more than any other pair. The three-percent monitoring domain is the lightest, but a lightly weighted domain is still worth a baseline review. One further wrinkle: the detailed Task 12 text on the specification repeats a ground-mounted caption even though the weighted table and the roof-specific content point to building-mounted systems, so study the building-mounted material as the weighted heading describes it. Do not confuse this blueprint with the broader PVIP one.
The 2017 NEC Factor
The current issuer FAQ and handbook identify the 2017 NEC as the reference edition for the PVIS exam. This trips up candidates in two ways. First, newer training courses may teach to a later code edition; the issuer's materials indicate that newer course editions do not establish a change to the exam. Second, if you work daily under a different adopted code in your jurisdiction, your instincts about article numbers and rule wording may not match the exam's frame.
When you practice, anchor to the 2017 edition. Questions on conductor sizing, overcurrent protection, grounding, and interconnection should be answered according to that edition's text. Our PVIS study guide covers how to structure your code-book tabbing and highlighting within the allowed rules.
Retake Economics and Eligibility Windows
Without a published pass rate, the financial reality of a failed attempt is the best way to think about risk. Initial certification costs $125 for the application plus $375 for the examination, $500 in total before any training. A retake costs $275. Candidates outside the United States and Canada pay an additional $75 international testing fee. Recertification is $390. The full picture is in our PVIS certification cost breakdown.
| Item | Fee (USD) |
|---|---|
| Application | $125 |
| Examination | $375 |
| Initial total (before training) | $500 |
| Retake | $275 |
| Recertification | $390 |
| International testing fee (outside U.S. and Canada) | $75 |
Exam eligibility lasts one year from application approval. The scheduling page distinguishes a six-month Notice-to-Schedule deadline from that overall eligibility, but it is inconsistent about when the six-month clock starts at application approval in other places. Because of that ambiguity, confirm your own deadlines from the official documents you receive rather than relying on a secondhand summary.
Key Takeaway
A retake saves money compared with a full exam fee, but it does not save time or the cost of a lost scheduling window. Treat your first sitting as the one that counts and prepare accordingly.
A Domain-Ordered Prep Plan
Rather than a generic schedule, sequence your study by weight and by dependency. Grounding and hazards come early because they are heavily weighted and because they underpin later topics.
Safety foundations
- Develop safety plan and Safeguard against hazards (18% combined)
- Orient yourself in the 2017 NEC: index, Article 690, Article 705, Chapter 9 tables
Grounding and conductors
- Install grounding & bonding (10%)
- DC and AC PV system conductors (8% each)
- Practice sizing and voltage-drop math using only an on-screen-style basic calculator
Equipment, raceways, interconnection
- Electrical equipment, raceways, utility interconnection point
- Battery equipment (7%)
Mounting, modules, monitoring, full review
- Building-mounted system, ground-mounted structure, PV modules
- Monitoring, control, and communication hardware
- Timed practice sets mixing all 13 domains
If you want a condensed refresher before test day, our PVIS cheat sheet collects the must-know facts on one page, and you can pressure-test your recall with timed questions on our PVIS practice test site. Candidates who want to assess readiness honestly should take a full-length run on the main practice exam under time limits and the same reference rules.
Looking beyond the exam, the credential's value shows up in the job market; see PVIS jobs for who hires installers holding it and the ROI analysis for a balanced view. Note that the issuer sources we checked do not establish a certification-only salary premium, so approach pay claims cautiously.
Frequently Asked Questions
The issuer sources reviewed do not publish a credential-specific pass rate for the NABCEP PV Installer Specialist exam. Any specific percentage you see without a primary source should be treated with caution.
No. The passing standard is 70 on a scaled range of 0-99. It is a scaled score, not a percent-correct figure, so you cannot convert it directly into a number of questions you may miss.
The exam has 70 multiple-choice questions, but 60 are scored and 10 are unidentified unscored pilot items. Because you cannot tell them apart, answer every question carefully.
A retake costs $275. The initial total is $125 for the application plus $375 for the examination, or $500 before training, with a $75 additional fee for testing outside the United States and Canada.
Safeguard against hazards and Install grounding & bonding are the joint largest at 10% each. After those, several domains sit at 8%. Study in proportion to the published weights while keeping every domain covered.