How fast should you call a solar lead – and how do you keep it warm until SEAI approval?
By Smart Solar editorial teamUpdated 8 min read
Short answer
Call as soon as you realistically can: in the often-quoted study, the odds of reaching and qualifying a web lead fell sharply within the first hour. That study did not measure signed jobs, though. In Ireland the sale then waits for SEAI approval, so you also need a follow-up routine that runs until approval and contract.
Key points
- The InsideSales.com/MIT study (2007) found contact odds fell by over 10 times in the first hour, but it did not study closed sales.
- smart-solar.ie homeowners are told the first installers will contact them within 1–2 business days. That is their expectation, not your deadline.
- SEAI approval must be in place before work starts, and the work must be finished within 8 months of approval.
- Give every contact during the approval wait a reason and a date, and set an end point for follow-up.
Speed matters, but in Ireland it is only the first half of the job. The homeowner must then apply to SEAI and wait for approval before work can start, so most of your follow-up happens after the first call. This guide, part of the solar installer guide for Ireland, covers both halves.
What does the research say about lead response time – and what does it not say?
The often-quoted study found that the odds of reaching and qualifying a web lead drop sharply within the first hour. It is a 2007 presentation from a vendor and did not measure who signed, so use it as a reason to call quickly, not as a forecast.
The study is the InsideSales.com/MIT Lead Response Management Study, presented in October 2007 by InsideSales.com's chief executive and an MIT Sloan professor. It covered three years of data from six companies: over 15,000 web leads and over 100,000 call attempts.
| What the study reported | Result |
|---|---|
| Reaching someone, first hour | Odds fall by over 10 times |
| Qualifying a contact, first hour | Odds fall by over 6 times |
| Reaching someone, call at 5 minutes versus 30 minutes | Odds drop 100 times |
| Qualifying, call at 5 minutes versus 30 minutes | Odds drop 21 times |
Source: InsideSales.com/MIT Lead Response Management Study, presented 16 October 2007.
Four limits to know before you quote it:
- Contact and qualification, not sales. The study says it did not address close ratios, and each company defined "qualified" in its own way.
- Vendor data. The calls ran through the vendor's own system. The summary does not name the six companies, their industries or countries, so it says nothing specific about Irish solar.
- A secondhand copy. We read a 2008 web capture on a third party's site, not an MIT original. Cite it as "InsideSales.com/MIT, 2007".
- The 21 times figure. It is the drop in the odds of qualifying a lead when the call comes at 30 minutes rather than 5. The same researchers' 2011 article, The Short Life of Online Sales Leads, says in its abstract that most companies are not responding nearly fast enough. We have not read its full text, so we quote none of its figures.
The authors also reported that after 20 hours each extra dial appeared to lower the chance of qualifying, and wrote that they did not know why. Treat that as a hint.
What has the homeowner been told to expect?
Homeowners who request quotes through smart-solar.ie are told the first installers will contact them within 1–2 business days. That is the homeowner's expectation, not a delivery promise from Smart Solar and not a deadline for you.
Smart Solar passes on solar PV enquiries from private homeowners to installers and installs nothing itself. The homeowner fills in a form on smart-solar.ie or in a Facebook ad and agrees to installers contacting them about quotes. Enquiries are sent on a rolling basis, including evenings and weekends, when they meet the requirements and your filters; some wait for roof data first. Delivery is by email; other methods can be agreed.
Three things follow:
- The email has to reach a phone. An enquiry sitting in an inbox while everyone is on a roof is a slow response, whatever your target says.
- You may not be the only caller. The same enquiry can go to other installers, and the homeowner is comparing quotes.
- The first call can skip answered questions. An enquiry includes contact details, the address with Eircode and county, annual electricity use, roof pitch, a satellite-based roof and solar assessment, and wishes on battery and finance.
Why does SEAI approval change your follow-up?
Work cannot start until SEAI has approved the grant, so a verbal "yes" is not a start date. SEAI's solar grant page says approval must be in place before works proceed, and the homeowner then has 8 months to complete the works and submit all the documentation.
Unless a One Stop Shop manages several upgrades together, the homeowner applies and manages the upgrade through a registered contractor. SEAI's steps show the shape of the wait:
| SEAI step | What your follow-up has to do |
|---|---|
| Find a registered solar PV company and get quotes | First call, quote and survey booking |
| Apply to SEAI for a grant offer | Check that the customer has applied |
| Approval in place before the works start | Stay in touch with a reason; do not book the install yet |
| Install, then arrange a post-works BER | Plan both so the paperwork is in within the 8 months |
| Submit evidence of works; SEAI pays | Agree who gathers the evidence |
Source: SEAI, solar electricity grant page, November 2026.
SEAI's page gives no approval time, so do not promise a date. The rules are in the guide to selling with the SEAI solar grant.
What should the first call settle before the customer applies for the grant?
The first call should settle whether the customer can apply, who else has to agree, which system size you will quote and when you will speak next.
- Eligibility basics. SEAI requires an MPRN, a home built and occupied before 2025 and no earlier solar PV funding at that MPRN. The first-call checklist for qualifying solar leads has the full question list.
- Who applies and who decides. Ask whether the customer will apply themselves and whether a partner, co-owner or lender has to agree.
- System size. SEAI pays pro rata by system size, so fix the size you are quoting before the application goes in.
- Timeline. Ask when they want the system working and whether anything is holding them up.
- Next contact. Agree a date, a time of day and a channel before you hang up.
How do you stay in touch while approval is pending?
Give every contact a reason and a date. Each call or message should move something forward: send the quote you promised, ask whether the application has gone in and whether SEAI has asked for anything, offer a survey slot, or confirm dates once approval is in place. "Just checking in" is not a reason, because the customer has nothing to answer.
The Data Protection Commission says electronic direct marketing by phone, text message and email is covered by S.I. 336/2011, an extra set of rules alongside GDPR. Read contacting leads legally in Ireland before you build texts or emails into your routine.
Step by step: a follow-up routine from enquiry to signed contract
The routine has two parts: a quick path from enquiry to first call, then a slower one until approval and contract. It is a suggestion for a small firm, not a tested standard.
- The enquiry arrives by email.
- It reaches a phone, not just an inbox.
- You log the arrival time.
- You call as soon as you can.
- You settle the five points above.
- You agree the next contact before you hang up.
Send the delivery email to whoever is off the roof that day, and name a backup. Keep a simple sheet: arrival time, each attempt, outcome and next action date. Set a target for time to first call that your team can keep on a roofing day, and measure against it. In the study, 4 to 6pm was the best slot for reaching someone, and 8 to 9am and 4 to 5pm for qualifying. The study left out evenings, so test these slots with your own homeowners.
After the first call:
- No answer: leave a short voicemail and try again at another time of day. Say who you are, that they asked for quotes and when you will call again. Log every attempt.
- Send what you promised, such as a written summary of the call, once you have checked the rules above.
- Diary the SEAI application. Note when the customer plans to apply and check in once, with a reason.
- While approval is pending, make contact only when you have something to say.
- When approval is in place, confirm the dates, the contract and who gathers the evidence, then plan the installation and post-works BER so the paperwork is in within the 8 months.
- Set an end point. Decide in advance how many attempts you will make. If a customer has not replied by then, close the enquiry and log why.
Typical follow-up mistakes
- Treating one study as a forecast. It says reaching people gets harder after an hour. It does not say how many jobs you will win.
- Quoting the multiples as Irish evidence. Keep "21 times" out of your sales material.
- Waiting for the homeowner's 1–2 business days. The same enquiry can go to other installers, and any of them may call first.
- Promising a start date before approval. Work cannot start without it, and SEAI's page gives no approval time.
- Chasing without a reason. Each contact should carry a document, a question or a booking.
- Not recording the first attempt. Without it you cannot tell whether speed helps your business, and open-ended follow-up wastes time on cold enquiries.
Questions and answers
How quickly should I call a new solar enquiry?
As soon as you realistically can. The InsideSales.com/MIT study (2007) found that the odds of reaching a web lead fell by over 10 times within the first hour. It did not measure closed sales and its summary does not name the companies, their industries or countries, so set a target your team can keep on a roofing day and measure your own time to first call.
Where does the 21 times response-time figure come from?
From the InsideSales.com/MIT study of 2007. It is the drop in the odds of qualifying a web lead when the call comes at 30 minutes rather than 5. The data come from a vendor's system across six unnamed companies, and the study did not measure closed sales. Quote it as InsideSales.com/MIT, 2007, and do not present it as an Irish result.
How long does SEAI approval take?
SEAI's solar grant page gives no processing time, so do not promise the customer one. It says approval must be in place before works proceed, and that after approval the homeowner has 8 months to complete the works and submit all the documentation. Ask the customer about the status of their application rather than guessing.
How quickly do homeowners from smart-solar.ie expect to hear from installers?
Homeowners are told the first installers will contact them within 1–2 business days. That is their expectation, not a delivery promise from Smart Solar, and the same enquiry can also go to other installers. Do not treat it as your target.
How many times should I try to call a solar enquiry?
This guide cites no study that proves a number, so treat any count as your own rule. The InsideSales.com/MIT summary reported that after 20 hours each extra dial appeared to lower the chance of qualifying, but its authors said they did not know why. Pick a fixed number of attempts over a set period, vary the time of day, log each one, then close it.
Can I text or email a homeowner between calls?
The Data Protection Commission says electronic direct marketing by phone, text message and email is covered by S.I. 336/2011, an extra set of rules alongside GDPR. Check the contacting leads legally guide in this cluster before you build texts or emails into your follow-up routine, and keep each message tied to the quote the homeowner asked for.
Sources
- 1The InsideSales.com/MIT Lead Response Management StudyInsideSales.com and James Oldroyd (MIT Sloan), MarketingSherpa summit · 16 October 2007 · mortech.com
- 2The Short Life of Online Sales LeadsHarvard Business Review (via BYU ScholarsArchive) · scholarsarchive.byu.edu
- 3What rules apply to electronic direct marketing?Data Protection Commission · dataprotection.ie
- 4Solar electricity grant (solar PV)SEAI · seai.ie