A Solar Proposal Shouldn’t Take a Month — Slow Turnaround Is Quietly Killing Your Solar Deals

How long should a solar proposal take? Around 24 to 48 hours from site assessment to a quotation the customer can sign — not two weeks, and never a month. Yet across Asia Pacific, many solar installers take one to four weeks to send a formal proposal. In a market where the customer is comparing installers side by side, that turnaround gap — not demand, not price — is often what decides who wins the deal.

“I might go on this for almost a month”

That line came from the marketing head of a residential-and-commercial solar installer in the Philippines, describing how long a single proposal can take from inquiry to send: “A proposal… I might go on this for almost a month.”

This is not a struggling company. Inquiries were pouring in from social channels — by her own count, “300 inquiries a day… I need help on that.” The demand side was solved. The proposal side was not: “We’re like doing everything in manual.” Quotations assembled by hand in a design tool, prices checked against a spreadsheet, follow-ups typed one by one from a personal phone.

If that sounds familiar, you’re in the majority. Industry benchmarks consistently show that roughly 70% of quotations that do get sent simply go quiet afterward — no reply, no follow-up, no closure. Slow to send, silent after sending: that’s the pattern.

What a month of silence costs you

While your proposal sits half-finished, your prospect is not waiting. Most solar buyers collect at least three quotes before deciding. Research on high-ticket buying repeatedly finds that the majority of customers — commonly cited at 78% — end up buying from the company that responds to them first.

Now run the math on your own pipeline. If you receive 100 serious solar inquiries a month and lose even a third of them purely to slow response and slow proposals, at an average system price of ₱400K you’re leaving eight figures a year on the table. This is consistent with what we see across high-ticket sellers generally: 20–50% of potential revenue lost not to competitors’ products, but to missed follow-ups and slow execution.

And there’s a second, quieter cost. As one installer put it: “The price also from the supplier is changing every two weeks.” A proposal that takes a month to send is built on pricing that is already two supplier price cycles old by the time the customer reads it. You either honor a stale price and eat the margin, or re-quote and look disorganized.

Why solar proposals take weeks — and why nobody sees it

The delay is rarely laziness. A solar proposal is genuinely harder than most quotations: it needs roof photos from the site assessment, a system size, panel and inverter selection, current supplier pricing, financing options, and a payment schedule — often 50% down with staged payments through commissioning.

The problem is where that information lives: photos on a technician’s phone, prices in a spreadsheet, templates in a design tool, the customer thread in a group chat, and the pricing logic in the owner’s head. Every proposal is a scavenger hunt across five places. That’s why it feels impossible to delegate — and why the bottleneck is invisible. No report shows “proposals aging in draft.” The deal just quietly dies, and everyone assumes the customer went cold.

What fast looks like

The installers who win are not writing better proposals. They’re assembling them from parts that already exist. In practice that means: a product catalog with current supplier pricing so a quote is built in minutes, not rebuilt from scratch; proposal templates that pull in the system design and payment schedule automatically; a maker-checker step so a junior can draft and the owner just approves; e-signature so the customer can accept from their phone; and automatic follow-up the moment a proposal goes out.

That last one matters more than most installers expect. The same marketing head lit up describing it: “Proposal sent, I can set that after three days… automatic message.” Follow-up stops depending on anyone’s memory — the system chases every open proposal until it’s answered. Her summary of the goal is the best spec we’ve heard: “I need a smooth system.”

Done right, the proposal that took a month goes out in a day or two, priced on this week’s supplier list, and it follows itself up. Same team. No new hires.

Who this is for

This is for solar installers, EPCs, and solar equipment suppliers selling high-ticket systems — deals that need a site assessment, a formal quotation, a downpayment, and staged payments through energizing. If you’re a small shop doing a handful of installs a year, a spreadsheet may still hold. But if inquiries are outpacing your ability to quote them, your bottleneck is turnaround — and it’s fixable in weeks, not quarters.

We build the system first, and you only pay if you keep it. See how the build-first install works for solar businesses.

Persons anonymized for data privacy and confidentiality compliance.

Frequently Asked Questions

How long should a solar proposal take to send?

Around 24–48 hours from site assessment to a signable quotation. Same-day is achievable for standard residential systems once pricing and templates are systemized. If your average is beyond a week, turnaround — not demand — is likely your biggest source of lost deals.

Why do solar proposals take so long to prepare?

Because the inputs are scattered: site photos on a technician’s phone, supplier prices in a spreadsheet that changes every two weeks, templates in a design tool, and pricing logic in the owner’s head. Assembling each proposal by hand across those five places is what turns days into weeks.

Do faster proposals actually win more solar deals?

Yes. Most solar buyers compare at least three quotes, and studies repeatedly find a large majority of customers buy from the company that responds first. Being first with a professional, signable proposal often beats being slightly cheaper two weeks later.

How can a small solar team send proposals faster without hiring?

Systemize the repetitive 90%: a priced product catalog, proposal templates, a maker-checker approval step, e-signature, and automatic follow-up after sending. A done-for-you managed CRM installs all of this around your existing process, so the same team quotes in hours instead of weeks.

Related Reading

• Your Solar Prices Change Every Two Weeks — But the Quote You Sent Doesn’t — why stale pricing quietly eats installer margin
• Solar Demand Just Exploded — So Why Are You Still Losing Deals? — demand isn’t your bottleneck; your sales engine is
• Best CRM for Solar Installers: DIY vs Done-For-You — what works when nobody has time to configure software
• You Energized the System — But Who Still Owes You? — the staged-payment gap after the install
• You Get Hundreds of Inquiries a Day — and Reply Too Late to Win Them — the speed-to-lead gap before the proposal
• You Sent the Solar Proposal — Then Silence: The Follow-Up Gap Quietly Killing Solar Deals — why quotes go quiet after sending, and the system that follows up until they buy or die.
• 300 Solar Inquiries a Day, a Handful of Booked Site Assessments — where solar leads die between inquiry and ocular
• Every Solar Quote Still Goes Through You: The Owner Bottleneck Quietly Capping Your Solar Business — why the queue forms behind the owner, and how to remove it.
• “We Already Have a Partner”: Why Solar Installers Buy a CRM and Still Quote Manually — the bought-and-abandoned CRM pattern, and the build-first fix.