Key facts
| Council area | Breckland |
| Population | 25,510 (Thetford built-up area, Census 2021 (ONS)) |
| Network operator | UK Power Networks (Eastern Power Networks) |
| Main employment areas | Fison Way Industrial Estate; Thetford Enterprise Park |
| Indicative yield | About 1,019 kWh per kWp a year (south facing, 30 degrees) |
| Nation support page | Grants and reliefs in England |
Where businesses are in Thetford
- Fison Way Industrial Estate: Established industrial estate off Howlett Way in Thetford. Firms registered there include Boniface Engineering, a transport equipment manufacturer, and fabrication and engineering firm Warren Services has been based on the estate.
- Thetford Enterprise Park: Employment land west of Mundford Road in Thetford, earmarked since 1989. Breckland Council put £150,000 towards it in 2019 and a £1.5m access roundabout was built, with a councillor saying the park could help create more than 1,000 jobs.
Large employers and sectors with sites here include:
- Food manufacturing (2 Sisters Food Group): 2 Sisters says its Thetford site employs over 850 colleagues, making it the largest employer in the Thetford area, and calls it its centre of excellence for breaded products and its flagship low energy site.
- Healthcare manufacturing (Baxter): Baxter's Thetford site employs production technicians who prepare medicines tailored to individual patients' needs.
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
Thetford is served by UK Power Networks (Eastern Power Networks). 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 Thetford
Thetford follows the national planning rules for England, decided by Breckland 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:
- Breckland Council adopted a new Thetford Conservation Area Appraisal and Management Plan on 8 April 2024 for use in deciding planning applications, and amended the conservation area boundary at the same time.
Our guides on listed buildings and conservation areas explain what these mean for a solar project.
What a business roof in Thetford could generate
Modelled with PVGIS for the town centre, a south-facing roof at 30 degrees produces about 1,019 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 101,900 kWh a year |
| Used on site | 70% at 24p = £17,119 saved |
| Exported | 30% at 5p = £1,529 earned |
| Total a year | About £18,648 |
| Simple payback | About 4.8 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 Thetford 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 Breckland
At the end of 2025, Breckland had 7,581 solar PV installations with 102.2 MW of capacity, up 26% since 2020, according to government figures. The Breckland page has the full local figures and how they compare.
Nearby towns
- Bury St Edmunds, about 12 miles away
- Stowmarket, about 19 miles away
- Newmarket, about 19 miles away
- Haverhill, about 26 miles away
Sources
- en.wikipedia.org: List of ONS built up areas in England
- find-and-update.company-information.service.gov.uk
- suffolknews.co.uk: funding boost for two thetford developments 9061361
- thejobfairs.co.uk: two sisters food group recruiter profile
- jobs.baxter.com: thetford uk
- thegazette.co.uk
- eadt.co.uk: thetford warren services acquires former uniglaze site 2061558
- thetfordandbrandontimes.co.uk: 21858273.no new businesses thetford enterprise park despite 1
- opencouncil.network
- 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 Thetford?
UK Power Networks (Eastern Power Networks). 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 Thetford?
About 101,900 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 £18,648 a year. Your own roof, orientation and use will change this.
Can a business in Thetford 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
- Breckland7,581 installations, 102.2 MW of solar and about 1,018 kWh per kWp a year for a south-facing roof.
- East of EnglandUK Power Networks connections, strong yields, the Felixstowe and A14 logistics corridor, arable farming and food processing across Norfolk, Suffolk and the Fens.
- 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.