Key facts
| Council area | Halton |
| Population | 61,645 (Runcorn built-up area, Census 2021 (ONS)) |
| Network operator | SP Energy Networks (SP Manweb) |
| Main employment areas | Astmoor Industrial Estate; The Heath Business and Technical Park; Sci-Tech Daresbury |
| Enterprise or investment zone | Liverpool City Region Investment Zone (Daresbury tax site) |
| Indicative yield | About 935 kWh per kWp a year (south facing, 30 degrees) |
| Nation support page | Grants and reliefs in England |
Where businesses are in Runcorn
- Astmoor Industrial Estate: One of the city region's largest dedicated industrial areas, built as part of Runcorn New Town and a Business Improvement District since 2008. The council has a regeneration masterplan for its dated 1960s layout.
- The Heath Business and Technical Park: Science and business park offering offices and laboratories, with more than 110 businesses and over 1,000 people on site.
- Sci-Tech Daresbury: Science and innovation campus near Daresbury village in Halton, run by Langtree, the Science and Technology Facilities Council and Halton Borough Council, with over 150 high tech companies.
Large employers and sectors with sites here include:
- Chemicals (INEOS Inovyn): INEOS Inovyn's Runcorn site runs chlor-alkali and ethylene dichloride production, and supplies around 98% of the chlorine used in UK drinking water treatment.
- Science and technology: Sci-Tech Daresbury hosts over 150 high tech companies with nearly 2,000 people working on the campus, and The Heath has supported more than 700 businesses since 2000.
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.
Enterprise, investment and freeport zones
- Liverpool City Region Investment Zone (Daresbury tax site): Designated from 8 April 2024 at Daresbury, around the Sci-Tech campus, rather than in Runcorn town itself. Investment Zone business rates relief can be started until 30 September 2034.
These zones can bring business rates relief or enhanced capital allowances for eligible firms on qualifying sites; check the current terms with the zone before relying on them.
Grid connection
Runcorn is served by SP Energy Networks (SP Manweb). 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 Runcorn
Runcorn follows the national planning rules for England, decided by Halton 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 Higher Runcorn Conservation Area was designated by Halton Borough Council on 21 July 1975.
Our guides on listed buildings and conservation areas explain what these mean for a solar project.
What a business roof in Runcorn could generate
Modelled with PVGIS for the town centre, a south-facing roof at 30 degrees produces about 935 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 93,500 kWh a year |
| Used on site | 70% at 24p = £15,708 saved |
| Exported | 30% at 5p = £1,403 earned |
| Total a year | About £17,111 |
| Simple payback | About 5.3 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 Runcorn 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 Halton
At the end of 2025, Halton had 2,733 solar PV installations with 13.6 MW of capacity, up 105% since 2020, according to government figures. The Halton page has the full local figures and how they compare.
Nearby towns
- Widnes, about 1 miles away
- Warrington, about 6 miles away
- St Helens, about 8 miles away
- Ellesmere Port, about 8 miles away
Sources
- en.wikipedia.org: List of ONS built up areas in England
- hbcnewsroom.co.uk: ambitious plans to transform astmoor industrial estate
- theheath.com
- en.wikipedia.org: Sci Tech Daresbury
- ineos.com: ineos inovyn agrees to acquire the uks only
- gov.uk: maps of liverpool city region investment zone tax
- gov.uk: investment zone business rates relief local authority guidance
- gov.uk: enterprise zones
- gov.uk: maps of liverpool city region freeport tax sites
- planning.data.gov.uk
- 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 Runcorn?
SP Energy Networks (SP Manweb). 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 Runcorn?
About 93,500 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 £17,111 a year. Your own roof, orientation and use will change this.
Can a business in Runcorn 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
- Halton2,733 installations, 13.6 MW of solar and about 938 kWh per kWp a year for a south-facing roof.
- North WestTwo network operators, realistic northern yields, Trafford Park, the Port of Liverpool, Cheshire chemicals and Cumbrian farming, and Greater Manchester's non-charging clean air plan.
- 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.