SunSum
Covering the North of England

What do solar panels actually cost in the UK?

Eight quick questions. Your system size, install price range, battery options, annual savings and payback period. Under a minute. No payment details. No pushy sales calls.

No payment detailsICO registeredMCS-certified installers

Sample estimate

4 bed semi · Newcastle

Great solar fit

System size

5 kWp

13 panels

Install price

£7k to £9k

MCS quoted

Annual savings

£810 to £1,140

with battery

Payback

6.5 to 9 yrs

break-even

Roof: Excellent (92/100)

South-facing, unshaded

850kWh/kWp

UK generation baseline

£3.5k to £12k

Typical install bands

6 to 10years

Common payback range

How it works

Eight questions. One clear solar estimate.

Built on 2026 UK install costs and regional irradiance data. The estimates are calculated using the same engine an experienced energy modeller would use, not a generic global formula.

  1. 1

    Tell us about your home

    Postcode, property type, roof direction, shading, bill, battery interest and any electric vehicle. Plain language. One screen at a time.

  2. 2

    See your indicative estimate

    Recommended system size, panel count, install price range, battery option and annual generation. No contact details required at this stage.

  3. 3

    Unlock the full report

    Share your address for the roof suitability score, payback period and a follow-up call from your named local solar installer.

Built on real UK data

"Most online calculators throw a generic global number at you. SunSum uses a UK irradiance model, regional electricity pricing and Smart Export Guarantee rates. The result is a range you can trust, not a fake quote."

SunSum team

FAQ

Solar panel calculator: the practical questions

Is this a real solar quote?
No. The figures you see are an indicative range built from UK average install prices and your inputs. A binding quote follows a roof survey from your local installer.
Who contacts me after I submit?
A single trusted, MCS-certified local installer for your region. Just one local company, not follow-up from five different firms.
What if I am just researching?
Select the researching option on the timeframe step. You will get the estimate by email without booking a sales call.
How does the solar calculator work?
We model annual generation from your postcode (regional irradiance), roof direction, shading and recommended system size. Savings combine self-consumption at your unit rate with Smart Export Guarantee exports.
What happens to my data?
We store only the data needed for the estimate and the installer follow-up. We are ICO registered. You can request deletion at any time. See the privacy policy.
Why no instant solar quote?
Anyone offering an exact quote without seeing your roof is guessing. SunSum shows ranges. The real quote comes after a survey.

See what solar would cost for your home.

Under a minute. No payment details. No pushy sales calls.