Key facts
| Council area | Swindon |
| Population | 183,680 (Swindon (Swindon) built-up area, usual residents, Census 2021 (ONS)) |
| Network operator | SSEN Distribution (Southern Electric Power Distribution licence area) |
| Main employment areas | Panattoni Park Swindon; Dorcan Industrial Estate |
| Indicative yield | About 1,013 kWh per kWp a year (south facing, 30 degrees) |
| Nation support page | Grants and reliefs in England |
Where businesses are in Swindon
- Panattoni Park Swindon: Panattoni's redevelopment of the former Honda plant, where almost 1.5 million sq ft of speculative warehouse space had been delivered by March 2026 and another 3.5 million sq ft is planned. The council says the park could support about 7,000 jobs on site once fully developed.
- Dorcan Industrial Estate: Industrial estate where Robert Cort Properties completed the Fraser Centre on Faraday Road in 2025: seven units totalling 50,000 sq ft with PV panels and EV charging points.
Large employers and sectors with sites here include:
- Financial services (Nationwide): Swindon is Nationwide Building Society's national headquarters and home to more than 3,000 of its employees.
- Advanced manufacturing, logistics and defence: The council's Economic Growth Plan, approved in March 2026, names advanced and sustainable manufacturing, financial and professional services and defence as priority sectors, and expects Panattoni Park to attract clean energy, component manufacturing and defence supply chain employers.
Large, simple roofs on distribution sheds and modern industrial units are usually the quickest and cheapest to fit. Older mill, factory and workshop buildings can work well too, but often need a structural survey first, and roofs from before 2000 may contain asbestos cement: see asbestos roofs.
Grid connection
Swindon is served by SSEN Distribution (Southern Electric Power Distribution licence area). Almost every commercial system needs G99 approval from the network operator before it is switched on, and the question is usually how much the local network can take back. Where export is limited, a G100 export limitation scheme can let a larger array connect. See G99 and DNO applications.
Planning in Swindon
Swindon follows the national planning rules for England, decided by Swindon council. Rooftop solar on most non-domestic buildings is permitted development, within height and edge limits, and systems above 50 kW need a prior approval application covering design and glare.
Points that come up locally:
- Swindon Borough has 27 conservation areas, including Old Town and Swindon's railway conservation area, made by merging and extending the Railway Village and Railway Works areas. The railway village has its own Article 4 direction removing some permitted development rights, so check before planning roof panels there.
Our guides on listed buildings and conservation areas explain what these mean for a solar project.
What a business roof in Swindon could generate
Modelled with PVGIS for the town centre, a south-facing roof at 30 degrees produces about 1,013 kWh per kWp a year.
| Item | Illustrative figure |
|---|---|
| System | 100 kWp, south facing at 30 degrees |
| Installed cost | £900 per kWp, so £90,000 excluding VAT |
| Generation | About 101,300 kWh a year |
| Used on site | 70% at 24p = £17,018 saved |
| Exported | 30% at 5p = £1,520 earned |
| Total a year | About £18,538 |
| Simple payback | About 4.9 years before tax relief |
Illustrative, not a quote: the same sums as our commercial solar calculator. A company paying corporation tax can usually shorten the payback with capital allowances.
Funding and support
We found no council or regional grant for business solar open in Swindon at the time of writing (November 2026). National reliefs still apply, such as capital allowances and, in England, the business rates exemption for onsite renewables: see grants and reliefs in England.
Solar across Swindon
At the end of 2025, Swindon had 6,490 solar PV installations with 207.9 MW of capacity, up 9% since 2020, according to government figures. The Swindon page has the full local figures and how they compare.
Nearby towns
- Cirencester, about 14 miles away
- Chippenham, about 16 miles away
- Witney, about 20 miles away
- Newbury, about 22 miles away
Sources
- ons.gov.uk: census2021
- ons.gov.uk: datadownload.xlsx
- swindon.gov.uk: council leader revisits panattoni park as first unit
- businessbiscuit.com: fraser centre
- swindon24.co.uk
- swindon.gov.uk: plan to build on swindons recent economic success
- gov.uk: enterprise zones
- gov.uk: freeports
- gov.uk: maps of freeports and freeport tax sites
- gov.uk: investment zones in england
- swindon.gov.uk: conservationareas
- swindon.gov.uk: swindon railway conservation area statutory notice
- swindon.gov.uk: swindon railway village article 4 direction
- Yield: PVGIS 5.3 (European Commission Joint Research Centre), SARAH3 data, 14% system losses, for the town centre, modelled 4 November 2026.
- Council area figures: DESNZ, renewable electricity by local authority 2014 to 2025.
Frequently asked questions
Who is the electricity network operator in Swindon?
SSEN Distribution (Southern Electric Power Distribution licence area). Most commercial solar systems need its G99 approval before they are switched on. The operator follows the postcode, so confirm yours with the Energy Networks Association postcode tool.
How much would a 100 kWp solar system generate in Swindon?
About 101,300 kWh a year for a south-facing roof at 30 degrees, modelled with PVGIS for the town centre. At 70% used on site at 24p and the rest exported at 5p, that is worth about £18,538 a year. Your own roof, orientation and use will change this.
Can a business in Swindon get a free solar survey?
Yes. Answer six short questions and we match the site with one MCS certified installer, who surveys it on site or by video call. It is free, with no obligation. Get a free survey.
Related pages
- Swindon6,490 installations, 207.9 MW of solar and about 1,022 kWh per kWp a year for a south-facing roof.
- South WestThe strongest yields in mainland Britain, a network with limited export capacity in places, Bristol and Bath clean air zones, dairy farming and Severnside logistics.
- Commercial solar calculatorEstimate commercial solar savings and payback, with the generation, price and cost assumptions shown and sourced, and the limits of a simple estimate explained.
- EnglandCurrent solar support in England for businesses, schools, public bodies, community groups and farms, plus rates, planning and who to contact.
- Planning permissionPermitted development for commercial rooftop solar and car park canopies in England, prior approval, heritage limits, ground-mounted schemes and the other UK nations.