See your solar report and savings in one minute.

Enter your postcode and Emily, our free AI solar adviser, shows you a personalised solar report right away.

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An estimate, not a quote. Installers only see your details on your request. If you're renting, share EnergyBrain with your landlord.
✓ 3D roof model
✓ Battery view
✓ Free estimate

We only need your postcode.

Most solar sites ask ten questions first. Emily asks one.

Just your postcode. No forms.

Design your solar home.

Built on real rooftop data.

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How Emily works

Live solar assessment

Emily is our free AI solar adviser. Four steps. Real screens from the live tool.

  1. Type your postcode

    A postcode or full address is enough. Nothing else to fill in.

    Postcode
    B1 1AA
    Or type your full address
    FreeNo sign-up
  2. Emily locates your roof

    Emily finds your house on the map and outlines the roof. Drag the map if she needs a hand.

    Satellite view with a home's roof outlined in blue
  3. Watch Emily measure

    Your roof is rebuilt in 3D. She checks size, sun and shade, then sizes the panels and battery.

    3D roof analysis with panels and an annual savings overlay
  4. Review your options

    Savings, payback and returns for three options, each as a range. No hidden extras.

    3D model of a roof with solar panels
Winter 2026–27

Dark evenings. Storm season. Is your home ready?

Winter is when bills peak and storms can bring power cuts. Solar and batteries carry 0% VAT until 31 March 2027. Find out what you could save.

Get your solar and battery report
GUIDE
Will a battery keep the lights on in a power cut?
Read guide →
GUIDE
Does solar work in the UK, even in winter and rain?
Read guide →

What could your roof save you? Your solar savings.

Sunlight is free, but not equal. We modelled over 15 million rooftops one at a time to put a number on what each can save you each year. See how your nation compares, then get your own.

Emily's tip
These are averages. Your roof's direction, shade and tariff change the answer, so pop your postcode in and I'll work out yours.
Average UK home
£946
a year in modelled bill savings
Payback
7.9 years
Return rate (IRR)
10.2%
Est. 20-year return
£10,832
Modelled average across more than 15 million rooftops, with a 5.17 kWp solar and 5 kWh battery system, before any subsidies. September 2026.
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Annual bill savings, UK
England£954
Wales£951
Northern Ireland£930
Scotland£869
Why nations differ
Sunshine, local power prices and roof angle all shift the result. England leads on modelled savings; Scotland sees longer payback. Your own roof matters most.
All four UK nations model above £800 a year. Rooftops are rebuilt in 3D from satellite imagery, then sized to roof angle, direction and local household use. Modelled estimates, not a quote.

38 seconds, with sound. Example detached bungalow in Prestatyn (LL19), modelled in Emily. Modelled estimates, not a quote.

Which system is right?

Smaller pays back faster. Bigger saves more.

Emily models three systems for your roof. On this example bungalow, the smallest earns the most on every pound, and the biggest saves the most each year.

Essential
The quickest return. About 5 to 6.5 years to pay back, saving around £800 a year.
Maximum
The biggest yearly saving, around £1,300, with a 15 kWh battery. It earns less on the extra money.
See all three on your roof
Free. No sign-up.
Diagram of solar panels, battery, hybrid inverter, switchboard, grid and home load
Solar + battery

Battery or no battery? The straight answer.

Panels feed a hybrid inverter. The battery stores what you don't use and gives it back at night. Emily shows the whole setup for your home.

Where you live

What is your county already saving?

Pick your area and see what rooftops near you are saving. Then get your own roof's number.

British suburban street of brick houses with solar panels under an autumn sky
Straight answers

Frequently asked questions

Read more on the Blog
Emily

Ready to see what your roof can do?

Not ready to buy? That's fine. Your report is yours to keep. An installer only gets your details if you choose to share them.

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