What Is a Notice to Proceed (NTP) in Residential Solar?

Ask a solar sales organisation how many deals it closed last month and you will get a confident number. Ask how many cleared Notice to Proceed and the answer is usually slower, smaller and less certain.

That gap is the real pipeline. Everything before NTP is a promise; everything after it is a project.

What NTP actually is

Notice to Proceed is an internal authorization, not a permission granted by an outside body. Nobody at the utility or the building department issues it. It is the moment the party carrying the financial risk says: this deal is real enough that I will now spend money on it.

What it unlocks is specific:

• Material ordering. Modules, inverters, racking and balance of system against a real design.
• Crew scheduling. A slot on an install calendar, which is a scarce resource with a real opportunity cost.
• The first milestone draw, on most funding structures.

Everything on that list is expensive to reverse. That is the entire reason the gate exists. A deal that clears NTP and then dies has already consumed material, a calendar slot and, in the messiest cases, drawn funds. The full cost of which is what the deal fallout cost calculator exists to price.

The four gates

Different organisations word their criteria differently. Underneath the wording, almost all of them are testing the same four things.

1. The contract is clean

Signed by everyone on title, not just the person who was home. Past any statutory right-of-rescission window that applies. Reflecting the final system size, final price and final financing product, not the version signed before the survey changed the design.

The co-owner signature is the one that catches people. A spouse or co-owner who is on the deed but was not present at the sale is a routine, entirely preventable NTP blocker, and it is usually discovered late because nobody checked title until the permit package was being assembled.

2. The design is final and accepted

A completed site survey, a design engineering can build from, and, critically, homeowner acceptance if the design changed.

This is where most NTP ageing actually lives. The survey found something, engineering revised the design, and the revised proposal is sitting unsigned because re-closing a closed deal is nobody's favourite task and it is not on anyone's daily list.

3. Financing is approved at the final numbers

Not approved in principle. Approved, documented, stipulations cleared, at the system size and price the contract now reflects.

The trap is sequencing. Financing is often approved early, against the original proposal. If the survey changes the system, the approved amount and the contracted amount no longer match, and the file has to go back. A deal can look financed and be, in NTP terms, unfinanced. The reasons a file goes back at all are covered in why solar loans get declined and what happens next.

4. Eligibility conditions are closed

The residual category, and the one that generates the strangest delays:

• HOA approval, where required, which can run on a committee's monthly meeting schedule regardless of anyone's urgency.
• Roof condition, where a lender, a warranty or common sense requires work before an array goes on.
• Title issues: liens, trusts, recently transferred deeds.
• Utility account mismatch, where the person on the utility account is not the person signing. This one propagates: it blocks the interconnection agreement later, as covered in the PTO and interconnection checklist.

NTP and the money

On most funding structures, NTP is where cash starts moving, which is why it is worth being precise about what it is not.

NTP is an authorization. M1 is a payment. They often coincide, because most lender products tie the first draw to the commencement of work, but they are governed by different documents and can move independently. A deal can clear NTP internally and still not draw, if the funding agreement conditions M1 on something else: material delivery, install start, or a document the lender has not received.

The practical consequence for a sales organisation is that the working-capital gap does not begin at install. It begins at NTP, when materials are ordered against a deal whose funds have not landed. That interval is what the working capital calculator sizes, and what Direct Pay is designed to remove by covering material cost upfront.

What NTP looks like as a report

Most organisations track a count of deals at NTP. The count is close to useless on its own. Two reports are worth more:

Ageing by reason code. Not "12 deals awaiting NTP" but "12 deals, of which 5 awaiting homeowner re-signature after redesign, 4 awaiting a lender stipulation, 2 awaiting HOA, 1 awaiting a co-owner signature." The first version tells you that you have a problem. The second tells you what to do on Monday.

Clearance rate and time-to-clear, by sales team. A team whose deals clear NTP in three days and a team whose deals clear in three weeks are not selling the same product, whatever the contract value says. The difference is almost always upstream: qualification quality, whether panel photos are captured at the table, whether title is checked before signature.

Both reports point at the same conclusion. NTP delay is a symptom. The disease is upstream, in what the sales process collects and verifies before it declares a deal closed.

Who should own the NTP gate

The party carrying the risk should own the decision. The party who closed the deal should own the homeowner conversation. Neither should own both, and both should be named.

Where this goes wrong is a structure in which the sales organisation believes fulfillment is chasing the missing document and fulfillment believes sales is chasing it, because it involves the homeowner. Nobody is chasing it. This is the same unowned-handoff failure that leaves installed systems waiting on permission to operate, and it has the same fix: a named owner per blocker type, agreed before the blockers occur rather than during them.

For a sales organisation working with a fulfillment partner, the questions worth asking directly are: what exactly are your NTP criteria; who clears each one; what is your median and 90th-percentile time from signature to NTP; and who calls the homeowner when a redesign needs re-signing. Those questions belong alongside the licensing and insurance checks in the installer vetting scorecard.

Where Seamless Home fits

Seamless Home runs the work between signature and install as inside operations, design, engineering, permitting and funding-portal uploads, and routes closed deals to installing partners in its network. The NTP prerequisites that normally sit unowned between two companies sit with one team.

Coverage is confirmed per service area rather than promised as blanket availability, and the licensed installing contractor remains the permit applicant of record.

If your pipeline looks healthy at signature and thin at install, the gap is almost certainly here. Get in touch.