Key facts
| Council area | North Northamptonshire |
| Population | 68,160 (Corby built-up area, Census 2021 (ONS)) |
| Network operator | National Grid Electricity Distribution (East Midlands) |
| Main employment areas | Earlstrees Industrial Estate; Oakley Hay and Saxon Park; Former Tata Steel West works logistics land |
| 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 Corby
- Earlstrees Industrial Estate: One of Corby's main industrial estates, about two miles north of the town centre off the A6116 and A427, with new large sheds such as Raven Park.
- Oakley Hay and Saxon Park: Industrial estate on the south side of Corby described by agents as the nearest prime estate to the A14, with large units at Saxon Park on Great Folds Road.
- Former Tata Steel West works logistics land: Tata Steel sold a 99 acre plot on the west side of its works for a campus style logistics hub, using the money to invest in its tube making.
Large employers and sectors with sites here include:
- Steel tube making (Tata Steel): Tata Steel runs a tube making works in Corby and has been installing a new combination tube mill and induction furnaces.
- Distribution (RS Components): RS Components has its registered office and site on Birchington Road, Weldon, Corby, where it opened a distribution centre in 1984.
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
Corby is served by National Grid Electricity Distribution (East Midlands). 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 Corby
Corby follows the national planning rules for England, decided by North Northamptonshire 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 Corby Old Village Conservation Area protects the historic village core around the Grade II* Church of St John the Baptist.
Our guides on listed buildings and conservation areas explain what these mean for a solar project.
What a business roof in Corby 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 Corby 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 North Northamptonshire
At the end of 2025, North Northamptonshire had 11,601 solar PV installations with 184.3 MW of capacity, up 38% since 2020, according to government figures. The North Northamptonshire page has the full local figures and how they compare.
Nearby towns
- Kettering, about 7 miles away
- Northampton, about 19 miles away
- Loughborough, about 29 miles away
- Banbury, about 40 miles away
Sources
- en.wikipedia.org: Corby
- en.wikipedia.org: List of ONS built up areas in England
- business-times.co.uk: tata steel sells corby plot for new logistics
- tatasteeluk.com: new works manager for corby
- find-and-update.company-information.service.gov.uk
- her.northamptonshire.gov.uk: DNN12547
- heritagecheck.co.uk: corby old village
- 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 Corby?
National Grid Electricity Distribution (East Midlands). 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 Corby?
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 Corby 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
- North Northamptonshire11,601 installations, 184.3 MW of solar and about 1,020 kWh per kWp a year for a south-facing roof.
- East MidlandsNGED connections, Golden Triangle logistics, Lincolnshire farming and food processing, Derby manufacturing and the Nottingham Workplace Parking Levy.
- 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.