How many panels could fit?
Explore a proposed layout for the available roof space, with no measuring tape or roof plans needed.
Panel numbers and roof space →Solar panel calculator for UK homes
What could solar
do for your home?
Start with your address. VERA works out where solar panels could fit and how much electricity they could generate. No roof measurements or technical know-how needed.
Add your details to unlock your personalised results. Free, no obligation. Your choice of installer.
A result for your roof
Go beyond a typical-house estimate.
Your postcode is a starting point. Your roof’s shape, direction and surroundings help determine what solar could do for your home.
What could they generate?
See an estimate of annual electricity generation for the proposed panels, based on the available roof and environmental data.
Understanding solar generation →What could you save?
Use the assessment to explore potential savings. Your electricity use, tariff and the cost of installation all affect the financial picture.
How solar savings are calculated →No solar expertise required
From your address to your solar options.
Find your home
Start typing your address or postcode and choose your property. VERA checks the available information automatically.
Unlock your results
Add your name, email and phone number to see the detail and get your free quote.
Choose your next step
Explore your results, chat to our team about installer recommendations, or send your design to an installer of your choice to price.
What does a solar calculator need to know?
A useful assessment starts with the correct roof and considers where panels can go, which way they face and the shade around them. VERA works with the available property data so you don’t have to supply those measurements yourself. If the data is unclear, we may ask you to confirm your home or its outline.
Panel capacity is not the same as electricity generated
For an arithmetic example, ten 450-watt panels add up to 4.5 kWp of rated capacity. That does not mean they will generate 4,500 kWh every year. The roof, layout and conditions determine the generation estimate; when you use that electricity and your tariff determine its financial value. This is a generic explanation, not a real-home assessment.
How accurate are the results?
Remote data can be incomplete or out of date, and weather varies. Treat the assessment as a useful starting point for your quote, with a site survey to confirm the final design. We explain the inputs and limitations in VERA’s assessment approach.
Thinking about a battery?
A battery is a separate cost and sizing decision. Compare solar with and without storage, and ask how the proposal reflects your household’s electricity use. Read our guide to solar panels and battery costs before comparing packages.
Solar panel calculator questions
Is VERA’s solar calculator free?
Yes. You can start with your address and add your contact details to unlock your personalised assessment and free, no-obligation quote.
Do I have to draw my roof on a map?
VERA uses available property data to assess the roof automatically. If the information is incomplete or ambiguous, we may ask you to confirm the building or help identify its outline.
Can I get an instant solar installation price?
The calculator gives you an assessment of your home’s solar potential. VERA will be in touch about your quote; a firm installation price depends on the equipment, work required and any survey findings.
Will my details be sold to a list of installers?
Your enquiry stays with VERA. We don’t automatically pass your contact details to several installers. You choose whether to ask our team for recommendations or share your design with your own installer.
Can it assess every UK home?
Data quality and coverage vary. If VERA needs clarification or cannot provide a reliable assessment, we’ll explain that rather than promise a result for every property.
Start with your roof.
See your solar potential.
No roof measurements. No technical know-how. Just your address to get started.
Get my free solar quote →