Road width
The carriageway width you are lighting. Wider roads push more lumens across, so the calculator raises the recommended wattage as width grows.
Sizing calculator
Solar street light sizing calculator.
Enter a few road parameters and get a practical wattage recommendation in about 30 seconds. It narrows the field before your engineer signs off — so you shortlist the right fixtures instead of the whole catalog.
AI-assisted sizing
Size the light before you buy.
Enter a few road parameters to get a practical solar street light wattage recommendation. It narrows the field before your engineer signs off.
A quick estimate based on road width, pole spacing and ambient brightness
PROJECT INPUT1 / 3
3 m30 m
10 m60 m
RECOMMENDED STARTING POINT
60W
60W all-in-one solar street light
A strong starting point for an 8 m road with 30 m pole spacing in a rural or park setting.
View matching products ↗* This is a preliminary sizing guide. Final wattage should be confirmed against latitude, shading, lux standards and battery configuration.
How it works
Three inputs. One clear next step.
Pole spacing
Centre-to-centre distance between poles. Longer spacing needs a higher-output fixture to hold the illuminance between poles.
Traffic & brightness demand
Rural roads tolerate a lower ambient level than urban arterials. Picking the right band applies the multiplier the design should start from.
Get a wattage band
The result is a starting wattage — a band to shortlist fixtures in, not a final photometric value.
Match a fixture
Open the all-in-one catalog and filter by the recommended wattage and IP66 housing.
Send us the specs
For tenders we confirm the final wattage, pole height and battery against your latitude and lux standard — per project.
Calculator FAQ
Before you trust the number.
How does the solar street light sizing calculator work?
It combines road width and pole spacing into a base wattage, then applies a multiplier for the traffic / brightness band you choose. The output is a preliminary recommended wattage you can shortlist fixtures against.
Do I need to know the pole height?
Pole height is closely tied to road width and wattage — a wider road generally needs a taller pole and a higher-output fixture. Start with the road width here, then send us the pole height and we will confirm the final specification for your project.
Is the recommended wattage final?
No — it is a starting point. Final wattage depends on latitude, shading, the lux or luminance standard your project must meet, and the battery configuration. Send us the site details and our engineers will confirm the specification per project.
Next step
Turn the number into a spec sheet.
Send your road width, pole height, spacing and lux standard. Our engineers confirm the final wattage, battery and fixture — per project.