Commercial solar installers in Grantham

Key facts

Where businesses are in Grantham

• Alma Park Industrial Estate: Established industrial estate north east of the town centre, served by Alma Park Road and Londonthorpe Road, with mainly steel framed industrial buildings. A 2015 council review listed occupiers including Windfield Engineering, Newark Concrete and Chandlers Oil and Gas, plus the Limesquare Business Park starter units.
• Spittlegate Level: Employment land in southern Grantham, within the wider Grantham Strategic Gateway allocation, with outline approval for 43,200 sq m of industrial (B2) and 43,200 sq m of storage and distribution (B8) floor space.

Large employers and sectors with sites here include:

• Food manufacturing (Moy Park): Moy Park's Ready to Eat facility on Gonerby Road makes coated chicken products for UK retailers, and an expansion announced in January 2024 created 40 new jobs.

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

Grantham 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 Grantham

Grantham follows the national planning rules for England, decided by South Kesteven 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 Grantham Conservation Area was designated in January 1970, with its appraisal amended in June 2009. Its medieval core around St Wulfram's Church has a high concentration of Grade I and II* listed buildings and is described as highly sensitive to change.

Our guides on listed buildings and conservation areas explain what these mean for a solar project.

What a business roof in Grantham could generate

Modelled with PVGIS for the town centre, a south-facing roof at 30 degrees produces about 1,015 kWh per kWp a year.

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 Grantham 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 South Kesteven

At the end of 2025, South Kesteven had 5,790 solar PV installations with 134.7 MW of capacity, up 80% since 2020, according to government figures. The South Kesteven page has the full local figures and how they compare.

Nearby towns

• Sleaford, about 11 miles away
• Newark-on-Trent, about 13 miles away
• Melton Mowbray, about 14 miles away
• Oakham, about 17 miles away

Sources

• en.wikipedia.org: List of ONS built up areas in England
• southkesteven.gov.uk: HOU6a Review of Alma Park Industrial Estate 2015
• southkesteven.oc2.uk
• lincsonline.co.uk: firm announces 40 new jobs in expansion 9349807
• southkesteven.gov.uk: Grantham Conservation Area (1)
• heritage-explorer.lincolnshire.gov.uk: DLI10632
• 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.