Commercial solar installers in Bolton

Key facts

Where businesses are in Bolton

• Firwood Industrial Estate: An industrial estate off Thicketford Road. In 2024 Millfield Estates sold a three acre plot on the former Hutchinson Works site there to wet wipes maker Saraco Industries for a 30,000 sq ft, two storey building.
• Boundary Industrial Estate: A 38,250 sq ft estate on Millfield Road, fronting the A58 Bury Road about three miles east of the town centre, with units of 950 to 11,917 sq ft. Occupiers include Eurocell, Bain Plumbing and Spectrum Products.

Large employers and sectors with sites here include:

• Bakery (Warburtons): Warburtons began in Bolton, where Ellen Warburton started baking bread in 1876, and its headquarters are still in the town; the family firm employs nearly 5,000 people across the UK.
• Wet wipes manufacturing (Saraco Industries): In February 2024 Saraco Industries bought a three acre site at Firwood Industrial Estate for £1 million for a 30,000 sq ft building with eight metre eaves and four loading doors.

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

Bolton is served by Electricity North West (North West 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 Bolton

Bolton follows the national planning rules for England, decided by Bolton 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 Deansgate Conservation Area, designated in 1987, covers about 8.8 hectares of the town centre and holds 10 listed buildings including the Market Hall and Victoria Hall, so roofs there need more care.

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

What a business roof in Bolton could generate

Modelled with PVGIS for the town centre, a south-facing roof at 30 degrees produces about 889 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 Bolton 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 Bolton

At the end of 2025, Bolton had 3,974 solar PV installations with 30.0 MW of capacity, up 46% since 2020, according to government figures. The Bolton page has the full local figures and how they compare.

Nearby towns

• Bury, about 6 miles away
• Leigh, about 7 miles away
• Wigan, about 9 miles away
• Chorley, about 10 miles away

Sources

• ons.gov.uk: census2021
• ons.gov.uk: datadownload.xlsx
• placenorthwest.co.uk
• millfieldestates.com: boundary industrial estate
• warburtons.co.uk: our family business
• careers.warburtons.co.uk: locations
• gov.uk: investment zones in england
• gov.uk: enterprise zones
• heritagecheck.co.uk: deansgate
• 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.