InstallerHQ
Convert your site

The savings question,
answered on your site.

SolarCheck is a solar savings estimator for a UK installer’s own website. It finds the roof from satellite imagery, sizes an array on it, then values the output using the MCS self-consumption method — so the figure on your site matches the figure on your survey paperwork.

Two lines of code · nothing rebuilt · live in days

your-solar-co.co.uk
Northside Solar
Roof detected · 24 m²
Estimated yearly saving£700£238 off the bill · £462 exported

On your site it wears your logo and your colours.

What the visitor sees

Thirty seconds, start to finish.

01They type a postcode

That is the whole ask. No account, no sales form first.

02They see their own roof

Found from satellite imagery, with its size and orientation measured rather than guessed from the property type.

03Panels get laid out on it

The array is drawn on their actual roof and sized to a realistic domestic system, not to whatever the roof would physically hold.

04They get a yearly figure

Split into what it takes off the bill and what the export tariff pays — because those are worth very different amounts.

Under the bonnet

Most solar calculators flatter. This one does the maths.

The number a homeowner sees on your website is the number they will hold you to at the survey. Six things make sure it survives that conversation.

01

It splits the saving in two, because the halves are not equal

A unit you use in the house saves you the import price — currently 26.32p. A unit you export earns the SEG rate, around 12p. That is a 2.2× spread, and a calculator that blends them into one rate is guessing which side of it your customer falls on.

02

Self-consumption comes from the MCS tables, not from an assumption

It uses MGD 003 — the lookup tables an MCS-certified installer has to use to produce a performance estimate. So the website figure and the survey figure agree, instead of the site promising more than the quote delivers.

03

It assumes nothing about energy prices going up

Nearly every solar quote inflates its lifetime figure with ~5% annual energy inflation, which roughly doubles the headline on an assumption nobody can check. This one assumes zero, and still shows a lifetime number.

04

Panel degradation is in the maths

Half a percent a year across twenty-five years. The lifetime figure is always below year one multiplied by twenty-five, which is the tell that a calculator is doing the work.

05

No system cost means no payback figure

It will not quote a payback derived from a price it invented. Give it a real cost and it gives a real payback; otherwise it stays quiet.

06

The battery is priced separately, and honestly

Storage is the most overstated upsell in this industry. The uplift is shown as its own number — from the same MCS tables, one column across — never folded into the headline.

Try it

Put your own postcode in.

This is the working checker, not a video. It reads the roof at the address you give it and shows the sunlight across it — the same thing it would do on your site.

Uses live Google roof data and 2026 energy prices. Figures are indicative and confirmed at survey.

What you get

This lands in your inbox.

Not “someone visited your website”. A named person, their property, and what they are actually after — before they have rung anyone else.

  • Already qualifiedThey answered the questions before you picked up the phone.
  • Yours aloneThey came from your website. Nobody else gets this one.
  • Email, WhatsApp or bothWherever you actually look.
New enquirynow
Sarah M.
07XXX XXX XXX · mobile
M20 4RT · south-facing · 24 m² usable
Modelled 4,752 kWh/yr from a 5.28 kWp array
Current bill about £75/month
Estimated yearly saving5.28 kWp array£700

Illustrative — this is the shape an enquiry arrives in, not a real customer.

Setup

Two lines of code. Live in days.

Nothing on your site gets rebuilt or ripped out. It works on WordPress, Wix, Squarespace or a custom build.

01

Book a 15-minute call

We look at your site and your trade, and tell you straight whether SolarCheck is worth it for you.

02

We brand it to you

Your logo, your colours, your tone. Configured to the schemes you actually install against.

03

You paste two lines

Or we do it. Either way you are live in a few working days.

your-site.co.uk — before </body>
<div data-grantcheck="wgt_your_key_here"></div>
<script src="https://js.installerhq.co.uk/embed.js" async></script>
FAQ

SolarCheck, answered

Where does the roof data come from?
Live satellite imagery and building outlines, resolved from the address the homeowner enters. Roof area and orientation are measured from that rather than estimated from the property type, and where the geometry is genuinely ambiguous it says so instead of inventing a layout.
How do you work out the saving?
Generation is modelled for that roof, then split: the share used in the home is valued at the electricity import rate (26.32p, Ofgem cap) and the rest at the Smart Export Guarantee rate (around 12p). The split itself comes from the MCS MGD 003 self-consumption tables rather than from a rule of thumb.
Why is the figure lower than other calculators?
Because most of them value every generated unit at the import price, or assume energy prices rise 5% a year, or both. Those two assumptions roughly double a lifetime figure. A number your customer cannot reproduce at the survey costs you the job at the worst possible moment.
Does it handle batteries?
Yes, as a separate figure. It shows self-consumption with and without storage — from the same MCS tables — so the homeowner can see what a battery is actually worth to them rather than being sold one on a blended average.
Is it accurate enough to quote from?
It is an estimate and says so. MGD 003 is explicit that it gives an average across similar properties, not a prediction for one house. What it is accurate enough for is a conversation that does not fall apart when you visit.

Put SolarCheck on your site
this week.

Fifteen minutes. We look at your site, show you exactly what it would do, and give you a price.

From £249/month · No lock-in · Cancel anytime · Live in days