Installer guide · 14 min read

Cold Calling for Commercial Solar: Scripts to Book Site Surveys by Phone

Short answer: cold calling still books commercial solar site surveys, because it reaches the person who signs off the project and gets a straight answer. It works when you call the right site types, screen against the TPS and CTPS, reach whoever pays the energy bill, qualify properly and confirm every booking. Below is the process, with example scripts to adapt.

Who cold calling suits (and who it doesn't)

Calling suits installers who can give one person protected calling time every day, cover a clear area and get to site meetings quickly. One conversation tells you whether a site owns its roof and spends enough on electricity.

It suits you less if only your surveyors or salespeople could call, or if you mainly sell to public bodies, where buying runs through commercial solar tenders and frameworks rather than a phone call. Calling works best alongside cold email for commercial solar and LinkedIn lead generation.

Step 1: build a call list worth dialling

Your list matters more than your script. Start where daytime electricity use and roof or land space line up. For context, see the UK commercial solar market in numbers.

Where B2B data comes from

• Companies House advanced search (free): filter by status, SIC code, registered office address and incorporation date. The registered office may not be the site with the roof.
• Paid B2B data providers: direct dials and named decision-makers. Check how the data was collected and when it was screened.
• Your own records: old enquiries, lapsed quotes and neighbours of past customers on the same estate.

Screen against the TPS, CTPS and your own list

Screen every number against the Telephone Preference Service (TPS), the Corporate TPS (CTPS) and your own do-not-call list. Sole traders and some partnerships register on the TPS; companies, some partnerships and public bodies on the CTPS. The ICO notes a registration can take 28 days to become active, so a list screened more than 28 days ago may now include registered numbers. Re-screen before each campaign.

Step 2: get past the switchboard

Most calls start with a receptionist. Be straight with them; vague or misleading openers get filtered. Ask for the right person by role.

Log the name and best time, and call back exactly when they said.

Step 3: the opening script

Lead with their site and bill, not your panels.

Step 4: the qualifying script

Five questions protect your surveyor's day. For the full checklist, read how to qualify commercial solar leads.

Step 5: objection handling (honest answers)

Answer honestly, ask a question back and accept a genuine no. Put these examples in your own words.

Step 6: book the survey and confirm it

• Offer two specific slots rather than "when suits you?", and book while you are on the call.
• Confirm who will be there, and ask for the person who signs to attend.
• Send a calendar invite straight away with the address, who is coming and a phone number.
• Ask for the last 12 months of electricity bills or half-hourly data, and roof access details, before the visit.
• Call or message the day before to confirm. Rebook rather than let a meeting quietly fall through.
• Give the surveyor a short write-up of the answers.

The same steps apply to inbound enquiries and to leads bought from a solar lead provider: see solar lead follow-up, speed to lead and no-shows.

Then turn the meeting into a contract: see how to sell commercial solar.

Step 7: cadence and call-backs

Few decision-makers answer first time. Plan several attempts over two or three weeks at different times of day, with a short email between calls. When somebody says "call me in three months", set a dated task there and then. When somebody asks you not to call, add them to your do-not-call list.

Step 8: CRM and dialler basics

You need a CRM that logs every call, outcome and call-back, and dials for you. As one example, Close describes built-in calling with a Power Dialer that "queues up your next call the moment one ends", a Predictive Dialer, call recording and AI call summaries. Its pricing page (checked 7 Oct 2026) lists the Power Dialer on the Growth and Scale plans and the Predictive Dialer on Scale only, with minutes and numbers charged on top.

Take care with predictive diallers, which can drop answered calls when no caller is free. The ICO says the Data (Use and Access) Act widened the definition of a call to include attempts to connect, and Ofcom regulates abandoned and silent calls.

Step 9: what to track

Track five numbers weekly. Benchmarks vary too much with data and area to be useful; plan with your own ratios after a few weeks.

Once you know your surveys-attended-to-installs rate, our lead calculator works backwards from your install target, and what commercial solar leads really cost shows how to cost calling hours per signed project.

UK rules for cold calling businesses

Sales calls are covered by the Privacy and Electronic Communications Regulations (PECR), enforced by the ICO. A summary of ICO guidance, not legal advice:

• You can make live calls to a business number not registered on the TPS or CTPS, as long as it hasn't objected to your calls before.
• Screen against both registers and your own do-not-call list. Sole traders and some partnerships are treated like individuals.
• Say who is calling, display your number (or a valid alternative) and never withhold it, and give contact details or a freephone number if asked.
• Automated (recorded) marketing calls need the person's specific consent. Don't use them for cold outreach.
• A named contact at a business is personal data under UK GDPR, so you need a lawful basis (the ICO names consent and legitimate interests as the two most relevant for B2B) and must honour objections.
• If you buy a list, check it was collected fairly and screened recently.

The ICO says the Data (Use and Access) Act lets it fine up to £17.5 million or 4% of global turnover under PECR. In May 2026 it fined Energy Prices Direct, a Glasgow energy buying consortium, £160,000 over 700,000+ unsolicited calls to TPS- and CTPS-registered numbers, made using bought data that had not been screened.

What it really takes

Our commercial solar lead generation guide compares calling with the other channels. If you would rather hand the calling to someone else, our guide to choosing a renewable energy marketing agency explains what to ask before you sign.

Where it usually goes wrong

• Calling time gets eaten. Salespeople stop calling when proposals pile up; the pipeline dries up later.
• Bad or unscreened data. Dead numbers waste dials; unscreened ones create legal risk.
• Booking without qualifying. A tenant with no landlord consent still costs a survey day.
• Meeting the wrong person. The office manager liked the idea; the MD never saw the proposal.
• No confirmation. Unconfirmed bookings are the ones that don't show.
• No tracking. Nobody can tell whether the list, opener or caller is the problem.

Do it yourself vs have it done

Doing it yourself is the right call when you have a dedicated caller with protected time, a clear patch and someone to manage the numbers weekly. If calling would fall to people whose days belong on roofs and in proposals, or you want spend tied to meetings that actually happen, having qualified, exclusive site meetings booked for you is the simpler route. TNW Marketing is paid per qualified, attended appointment, with no retainer and no minimum spend. See how pay per appointment works, compare pay per lead vs retainer and other commercial solar lead suppliers and their prices, read about appointment setting for solar installers, or watch installers talk about it on the video reviews page and in our installer case studies.