Commercial building solar panels across Wiltshire
We arrange roof surveys on offices, retail units, hotels and leisure buildings throughout Wiltshire, model what each roof can carry against the building's own consumption, and arrange the design, the grid application and the install through our MCS-certified partner.
- Modelled yield
- 907 kWh/kWp/yr
- Mean across Wiltshire towns, EU PVGIS v5.2
- Network operator
- Scottish and Southern Electricity Networks
- G99 applications and export limits
- Commercial stock
- 4,500 office / 4,500 retail
- VOA rating list, March 2025
- Commercial rooftop schemes
- 4 on record
- REPD Q1 2026, districts we cover
- Towns covered
- 8
- Surveys arranged county wide
What the data says about Wiltshire
Modelled yield varies across Wiltshire: Salisbury comes out at 923 kWh per kWp a year against 894 at Chippenham. On a 210 kWp commercial roof that gap is about 6,090 kWh a year.
Across the 2 authorities our Wiltshire towns sit in, the Valuation Office Agency lists 4,500 office and 4,500 retail properties, 240 of them large-format stores and retail warehouses. Source: Valuation Office Agency, Non-domestic rating: business floorspace, 31 March 2025 (published December 2025), counts and floorspace by special category code and local authority district, England and Wales.
The planning database records 4 roof-mounted solar schemes on commercial buildings in the postcode districts we cover here, including Morrisons, Weymouth Street. These are other organisations' projects, listed from the public record. Source: Renewable Energy Planning Database, Q1 2026.
Connections across the county run through Scottish and Southern Electricity Networks. Anything above 3.68 kW per phase needs a G99 application, and the export limit offered shapes the design, so the question is asked before the array is sized.
- Swindon 899 kWh/kWp
- Salisbury 923 kWh/kWp
- Trowbridge 909 kWh/kWp
- Chippenham 894 kWh/kWp
- Devizes 906 kWh/kWp
- Melksham 912 kWh/kWp
- Warminster 912 kWh/kWp
- Marlborough 900 kWh/kWp
Book a survey in Wiltshire
Send the postcode, the rough footprint and whether you own or lease the building. We come back with what the roof can carry, what it would generate against your consumption, and what the funding routes look like.