Key facts
| Council area | Swale |
| Population | 54,390 (Sittingbourne built-up area, usual residents, Census 2021 (ONS)) |
| Network operator | UK Power Networks (South Eastern Power Networks licence area) |
| Main employment areas | Eurolink; Kent Science Park |
| Indicative yield | About 1,073 kWh per kWp a year (south facing, 30 degrees) |
| Nation support page | Grants and reliefs in England |
Where businesses are in Sittingbourne
- Eurolink: One of Kent's largest business parks. In January 2020 occupiers on its newest phase, Eurolink V, included The COOK Kitchen, Doka, Pickering Plant and The Salvatori Group, and Barwood Capital bought the 4.2-acre Trilogy plot there for three units totalling about 84,000 sq ft.
- Kent Science Park: A 65-acre science park run by Pioneer Group, with labs, offices and coworking space across 47 buildings for agritech, biotech and biopharma businesses. Planning permission is in place for over 120,000 sq ft of further development.
Large employers and sectors with sites here include:
- Paper making (DS Smith, Kemsley Mill): Kemsley, the UK's largest mill for recycled papers, makes 830,000 tonnes of paper a year from recycled fibre, and DS Smith announced a £48 million fibre line there in October 2025. In September 2026 it proposed closing one machine, Paper Machine 4, with possible redundancies, while investing £20 million in Paper Machine 6.
- Frozen ready meals (COOK): COOK says most of its frozen meals are prepared by hand by its own cooks in its kitchens in Sittingbourne.
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
Sittingbourne is served by UK Power Networks (South Eastern Power Networks 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 Sittingbourne
Sittingbourne follows the national planning rules for England, decided by Swale 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:
- The High Street, Sittingbourne Conservation Area, designated in 1969, holds 26 listed buildings on about 3.5 hectares, so town centre roofs inside it need more care.
- The High Street, Milton Regis Conservation Area holds 37 listed buildings on about 4.3 hectares, including the Grade II* Court House.
Our guides on listed buildings and conservation areas explain what these mean for a solar project.
What a business roof in Sittingbourne could generate
Modelled with PVGIS for the town centre, a south-facing roof at 30 degrees produces about 1,073 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 107,300 kWh a year |
| Used on site | 70% at 24p = £18,026 saved |
| Exported | 30% at 5p = £1,610 earned |
| Total a year | About £19,636 |
| Simple payback | About 4.6 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 Sittingbourne 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 Swale
At the end of 2025, Swale had 3,997 solar PV installations with 448.1 MW of capacity, up 596% since 2020, according to government figures. The Swale page has the full local figures and how they compare.
Nearby towns
- Maidstone, about 10 miles away
- Ashford, about 14 miles away
- Tonbridge, about 22 miles away
- Folkestone, about 26 miles away
Sources
- ons.gov.uk: census2021
- ons.gov.uk: datadownload.xlsx
- kentonline.co.uk: part of industrial estate sold for 2 25m
- business-times.co.uk
- thepioneergroup.com: kent science park
- paper-world.com: kemsley paper mill to boost its efficiency
- sfmradio.com: jobs at risk at ds smith kemsley paper
- cookfood.net: cook faqs
- heritagecheck.co.uk: high street sittingbourne
- heritagecheck.co.uk: high street milton regis
- 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 Sittingbourne?
UK Power Networks (South Eastern Power Networks 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 Sittingbourne?
About 107,300 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 £19,636 a year. Your own roof, orientation and use will change this.
Can a business in Sittingbourne 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
- Swale3,997 installations, 448.1 MW of solar and about 1,079 kWh per kWp a year for a south-facing roof.
- South EastTwo network operators, strong south coast yields, Kent horticulture, Thames Valley offices and Solent logistics, and the clean air zones that affect fleets.
- 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.