What Happens When a Solar Inspection Fails

An inspector does not fail a PV solar project. They write down what has to change.

That distinction matters more than it sounds like, because the language people use — failed, rejected, red-tagged — implies something has been revoked. Nothing has. The permit is still open, the approval is still live, and the project is one corrected item and one queue position away from moving again.

What it costs is almost entirely a function of two things: whether the fix can happen in the field, and how quickly somebody reads the notice.

What the correction notice is

At the end of an inspection that does not pass, the inspector issues a document listing the specific items that do not comply. Depending on the jurisdiction it is called a correction notice, a correction list, a deficiency notice, or a red tag.

It normally cites a code section for each item, and it is limited to what the inspector observed. It is not a general finding that the installation is bad, and it is not an invitation to re-do the job.

Three things follow from it:

1. The permit stays open. Nothing is re-applied for. This is the single most useful fact about a correction notice and the one most often misunderstood.
2. The system may not be energised. It stays off until sign-off, so everything downstream is paused rather than progressing in parallel.
3. The re-inspection covers the noted items. The inspector verifies the corrections. They are not, however, prevented from raising something else they observe on the return visit, which is a real and occasional source of a second cycle.

The cost is calendar, not fees

The fee schedule is the part people look at and the part that barely matters.

Most jurisdictions include the first re-inspection in the original permit fee and charge for the second and subsequent visits. The charge is usually modest. It is not where the money goes.

The third row is the one that governs. A correction notice puts the project back into the jurisdiction's inspection queue, and the queue does not care how small the fix was. A missing label and a re-run conduit re-enter at the same position and wait the same time.

That is the asymmetry that makes labelling failures so expensive relative to their substance. A sticker that costs almost nothing and was entirely knowable in advance buys a two-week delay and a truck roll.

What actually gets written up

The recurring categories are stable across jurisdictions, even though the emphasis varies by inspector.

Labelling and signage. Consistently the largest single category, and the least defensible. The requirements are prescriptive, published, and cheap to satisfy. Failing on them is a process gap rather than a technical one.

Rapid shutdown provisions and their markings. Both the function and the required marking, and the marking is a frequent standalone finding. The requirements and how they have changed across code cycles are covered in solar rapid shutdown requirements explained.

Grounding, bonding, and conductor protection. Equipment grounding details, bonding at the racking, conductor support and protection in raceways, and workmanship at roof penetrations.

The point of interconnection. Breaker placement, busbar arrangement, and the required field marking of the supply configuration. The arithmetic behind that arrangement is in the NEC 120% rule — and note that a calculation done correctly still fails if the resulting configuration is not labelled.

Fire setbacks and roof access pathways. Where the as-built layout does not match the dimensions on the approved plan. See solar fire setbacks and roof access pathways.

Disconnects. Missing, mislabelled, or not accessible where the jurisdiction requires accessibility. Whether one is required at all is a local question, covered in does a solar system need an external AC disconnect.

The category that is not a defect

There is a distinct failure mode worth separating out: the installation does not match the approved plan set.

This fails even when the as-built condition is entirely compliant. The inspector is verifying the installation against the approved drawings, and a module count, a layout, an inverter model or a conduit route that differs from the approved plan set is a finding regardless of whether the built version is better.

It is a documentation problem presenting as a compliance problem, and the remedy is usually a revision rather than a field fix, which puts it in the slow queue. Field changes made for good reasons on installation day — an obstruction nobody surveyed, a rafter not where it was drawn — become inspection failures weeks later if nobody updates the drawings. The gap between what happened on installation day and what the file says is where this lives.

Who absorbs it on a subcontracted project

Ordinarily the installing contractor. A correction notice is a finding against work they performed, and re-inspection fees and return visits sit with them under any reasonably drafted subcontract.

The contested case is narrower and more interesting: the crew built exactly what the approved plan showed, and the plan was wrong.

That is a design error, not a workmanship error. The installing party incurred a return mobilisation for a defect they did not create and could not reasonably have caught. Most subcontracts do not address this, and in their silence the outcome is decided by relative negotiating position at an unhappy moment — the worst available mechanism, and the same gap described in what a subcontractor agreement should cover.

It belongs in the agreement as an explicit allocation, written before it is needed rather than argued when it is.

Meanwhile the delay cost lands somewhere else entirely. The party carrying the working capital — design, engineering, permit fees and materials all outlaid, and no funding milestone reached — absorbs the queue time regardless of whose item caused it. That is the exposure pattern set out in who pays for what on a solar project.

The two consequences that outrun the correction itself

The permit's inactivity clock. Permits commonly lapse after a defined period with no inspection activity, separately from their stated expiry date. A correction notice that is received, filed, and not acted on is precisely the pattern that runs that clock down.

The jurisdiction holds the permit holder responsible — normally the licensed contractor of record — and does not weigh why the project stalled. The expensive part is not the re-application fee. It is that a re-application is reviewed against the code edition in force at the time of re-application, not the edition the original drawings were approved under. A project that sat through a code cycle can come back needing design changes that had nothing to do with the original correction. The mechanics are in which NEC edition applies to a solar project.

The funding milestone. Milestones are evidenced by documents a failed inspection prevents from existing. A draw conditioned on a passed final inspection or on permission to operate cannot be claimed while a correction is open, so the project sits at maximum outlay with the draw unavailable — the structure described in solar milestone funding M1 and M2 explained. Funding approvals also carry validity periods that run on the calendar and do not pause for a correction cycle.

How to make this small

None of this requires being better at installing. It requires the notice to be treated as a tracked item with an owner and a clock.

• Pre-inspection verification against the approved plan, not against general good practice. Most findings are discrepancies with the drawings, so the drawings are what the walkthrough should be holding.
• A labelling checklist built from the jurisdiction's own requirements, applied before the inspection is requested. This is the cheapest single intervention available and it addresses the largest category.
• Same-day triage of any correction notice, with one question answered immediately: field fix or plan revision. That answer sets the entire timeline, and knowing it on day one rather than day nine is most of the recoverable delay.
• A named owner for every open notice, with the re-inspection request date and the permit's inactivity date both on the record.
• Catch it a queue earlier where possible. The same discrepancies that fail an inspection are the ones that get applications rejected at plan review, and they are far cheaper there — see why solar permit applications get rejected.

Seamless Home runs correction notices as tracked items inside design and permitting rather than as messages sitting with a crew: the field-fix-or-revision question is answered the day the notice lands, the permit's inactivity date is carried on the project record, and the re-inspection is requested rather than waited on. Coverage is confirmed per service area rather than promised as blanket availability.

The bottom line

A failed inspection is a correction notice against a permit that is still open. It is not a rejection and nothing has to be re-applied for.

The fee is trivial and the queue is not: one to three weeks, the same wait for a missing label as for a re-run conduit. The variable that actually sizes the delay is whether the fix is a field correction or a plan revision, because a revision re-enters plan review rather than the inspection queue.

The installing contractor normally absorbs the fee and the return visit, the party carrying working capital absorbs the delay, and the design-error case belongs in the subcontract before it happens. And the two consequences that hurt most — a lapsed permit re-reviewed against a newer code edition, and a funding milestone that cannot be claimed — are both driven purely by how long the notice sat.

If correction notices are landing with crews instead of with a tracked owner, talk to us about running them through fulfillment.