☀️ Free tool — no account required

Solar assessment for any UK property

Enter an address to get an instant solar potential estimate — panel count, annual generation, savings with and without battery, payback period. Powered by the Homedata Solar Assessment API.

Search for a property

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Solar panels

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System size (kWp)

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kWh/year generated

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kg CO₂ saved/year

☀️ Solar panels only

System cost estimate —

Annual savings —

Export income —

Payback period —

🔋 Solar + battery storage

Total cost (panels + battery) —

Annual savings —

Self-consumption —

Payback period —

🏠 Roof assessment

Estimated roof area

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Usable area

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Pitch estimate

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Orientation

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Assumptions used in this estimate

Want this data in your product?

The Solar Assessment API returns all of this data programmatically. Free tier: 100 calls/month.

Get a free API key → View API docs

☀️ For solar & EV installers

Looking for solar potential leads?

The free tool above estimates solar potential for individual properties. Our Lead Source platform lets you search across millions of UK homes and filter for your exact target — no solar panels yet, south-facing pitched roof, driveway for EV, recently sold.

✓ has_solar_panels: false — filter to unconverted homes only. Every result is a genuine prospect.
✓ Roof type & pitch — pitched tile or slate, estimated orientation. Pre-qualify before you spend a penny on outreach.
✓ Driveway & parking — identify homes with off-street parking for EV charger cross-sell. One property, two installs.
✓ EPC rating & recently sold — target D–G rated homes and new buyers actively renovating. Highest-intent audience.
✓ Exact verified addresses — UPRN-matched, Royal Mail ready. Export a letter-drop list for any postcode area in seconds.

Get free access → See Lead Source

Free to start — no card required. £10 in free credits included.

Sample property — Lead Source Unconverted

has_solar_panels false

has_parking true — driveway

roof_shape Pitched

roof_material Tile / Slate

construction_material Brick or Block

plot_area_m2 312 m²

epc_rating D → potential B

last_sold_date 2024-11-01 — new owner

full_address Unlock for 20p

Filter thousands of properties like this across any UK postcode area. Export verified addresses for direct mail.