How much do solar panels for manufacturing cost?
Real UK costs by system size, manufacturing sector, and financing route. Last updated July 2026.
Commercial solar panel cost and prices explained
Manufacturing sits within the wider commercial solar market, so the same economics apply to a factory or industrial building. Commercial solar panels cost around £750 to £950 per kWp installed above 250 kW, and commercial solar panel prices fall towards £600 per kWp above 1 MW. Commercial solar installation costs are driven mainly by system size, roof condition and grid connection, and the tables below break the numbers down by capacity and by manufacturing sector.
What drives the cost of solar for a manufacturing site
The headline figure for a manufacturing solar installation depends far more on the details of your site than on the panels themselves. A typical UK manufacturing system runs from around £150,000 to over £1 million fully installed, and the difference between those two ends is set by system size, the state of your roof, the electrical connection, and how you access the work. Panels and inverters are a commodity; the engineering around them is where real projects diverge. Below we explain what moves the number so you can read the size-by-size table that follows in context.
System size and economies of scale on price per kW
The single biggest lever is size, and the good news is that bigger systems cost less per unit of capacity. For systems above 250 kW the installed price is usually £750 to £950 per kW, and above 1 MW it falls towards £600 per kW. That happens because fixed costs such as design, the G99 application, scaffolding mobilisation, and grid works are spread across more panels, while module and inverter pricing improves at volume. The larger array is meaningfully cheaper per kW, which is one reason we size to your daytime baseload rather than trimming the system to save on the sticker price.
Roof type, condition and structural strengthening
Roof condition is the most common source of cost surprises on pre-2000 industrial buildings. Every project starts with a structural survey, and where a roof cannot carry the added load it may need strengthening before any rail or ballast goes on. Asbestos-cement roofs cannot take rooftop PV at all and must be replaced with a modern membrane first, so a re-roof sometimes sits inside the same capital envelope as the array. Because panels are warranted for 25 years and most industrial roofs last 15 to 20, doing the roof first is often the sensible call rather than a cost to resent. Trapezoidal metal, standing-seam, single-ply and concrete all take PV readily, but each fixing method carries its own labour and detailing cost.
Grid connection, scaffolding and access
Above 17 kW per phase a G99 application to your DNO is required, and the connection works can range from a straightforward agreement to reinforcement of a capacity-limited supply. Connection dates commonly run 6 to 18 months on constrained networks, which affects programme rather than price directly, but any DNO-required supply upgrade is a real line item. Scaffolding, safe rooftop access, coordination around live plant and edge protection all scale with building height and layout. Sites with rooftop process plant, hygiene zones or hazardous areas need more costly access planning.
Hidden costs to budget for
- Structural strengthening or a full re-roof where the survey demands it
- A DNO supply upgrade if your existing capacity limits the system size
- SPF1981 fire-safety design, now effectively an insurer requirement
- Scaffolding, edge protection and access for tall or complex roofs
- Ongoing operations and maintenance, typically £8 to £12 per kW per year above 250 kW
How tax relief and financing change the real net cost
The installed price is rarely the price you actually bear. Solar PV qualifies as plant and machinery, so the Annual Investment Allowance covers the first £1m of qualifying expenditure at 100 percent, giving a limited company up to roughly 25 percent effective tax saving in year one. Financing changes the picture again. A power purchase agreement delivers day-one savings with zero capex and keeps the asset off balance sheet, while asset finance spreads the cost over 7 to 15 years and is typically EBITDA-positive from year one, so it need not compete with your production-line budget. We model each route against a cash purchase, and we help you map the wider reliefs on our grants and funding page. For a figure built from your own half-hourly meter data rather than a table, request a quote.
Commercial and industrial solar panel prices per kWp (by system size)
Indicative UK installed costs before tax relief. Last updated July 2026.
| System size | Typical installed cost | Cost per kWp | Annual generation | Simple payback |
|---|---|---|---|---|
| 50 kWp | £45,000-£60,000 | £900-£1,200 | 45,000-50,000 kWh | 6-8 years |
| 100 kWp | £85,000-£115,000 | £850-£1,150 | 90,000-100,000 kWh | 5-8 years |
| 250 kWp | £190,000-£240,000 | £760-£960 | 225,000-250,000 kWh | 5-7 years |
| 500 kWp | £320,000-£420,000 | £640-£840 | 450,000-500,000 kWh | 5-6 years |
| 1 MW | £600,000-£760,000 | £600-£760 | 900,000-1,000,000 kWh | 4-6 years |
| 2 MW | £1,150,000-£1,450,000 | £575-£725 | 1,800,000-2,000,000 kWh | 4-6 years |
After 100% Annual Investment Allowance, the effective net cost for a profitable company is roughly three-quarters of the installed cost. VAT is reclaimable for VAT-registered businesses.
Cost and payback by manufacturing sector
| Sector | Typical system | Project value | Simple payback | Annual generation |
|---|---|---|---|---|
| Manufacturing Plants | 250-800 kW | £190,000-£680,000 | 6 years | 230,000-740,000 kWh |
| Food & Beverage Manufacturing | 400-1,200 kW | £300,000-£980,000 | 5.5 years | 370,000-1,100,000 kWh |
| Automotive Manufacturing | 500-2,000 kW | £380,000-£1,500,000 | 5 years | 460,000-1,840,000 kWh |
| Chemical & Process Manufacturing | 200-700 kW | £155,000-£620,000 | 7 years | 185,000-640,000 kWh |
| Pharmaceutical & Life Sciences Manufacturing | 300-1,000 kW | £240,000-£850,000 | 6 years | 275,000-920,000 kWh |
| Textile & Apparel Manufacturing | 150-500 kW | £115,000-£450,000 | 7.5 years | 140,000-460,000 kWh |
| Engineering & Metalworking | 150-600 kW | £115,000-£540,000 | 6.5 years | 140,000-550,000 kWh |
| Plastics & Injection Moulding | 300-1,000 kW | £240,000-£850,000 | 5.5 years | 275,000-920,000 kWh |
| Aerospace & Defence Manufacturing | 300-1,500 kW | £240,000-£1,200,000 | 5.5 years | 275,000-1,380,000 kWh |
| Electronics & Semiconductor Manufacturing | 300-1,200 kW | £240,000-£980,000 | 6 years | 275,000-1,100,000 kWh |
Cost and payback vary by sector and by site. See the detailed economics for food and beverage, pharmaceutical, automotive and engineering manufacturing, or read our full guide on what manufacturing solar costs in 2026. Local grid and council factors matter too, so check the picture for Birmingham, Manchester, Leeds and the other areas we cover.
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Cost questions
How much do solar panels for a manufacturing site cost in the UK?
A typical UK manufacturing solar installation ranges from around £150,000 to £1 million fully installed, depending on system size. Cost per kW is usually £750 to £950 for systems above 250 kW, falling towards £600/kW above 1 MW. The capital is normally fully expensed in year one under the Annual Investment Allowance, and most projects achieve simple payback in 5 to 7 years.
How much roof area do we need per kW of solar?
Roughly 5 to 6 square metres of roof per kW of installed PV in 2026, using 450W-plus panels in portrait orientation with optimised row spacing. So a 500 kW system needs around 2,500 to 3,000 square metres of unobstructed roof. We run a 3D shading study to confirm, because rooftop plant, parapets and adjacent buildings can reduce usable area significantly.
How do we finance manufacturing solar without using our capital budget?
Through a PPA or asset finance. A power purchase agreement provides solar energy with zero capex; you pay per kWh consumed at a rate below your current grid tariff. Asset finance puts the system on balance sheet but spreads the cost over 7 to 15 years, and most projects are EBITDA-positive from year one. Operating leases are also available. We model each route against a cash purchase so you can compare like for like.
What is the difference between a PPA and an asset-finance deal?
Under a PPA a third party owns and operates the system and you pay per kWh consumed, typically 20 to 40 percent below grid retail, with zero capex and off-balance-sheet treatment but no ownership. Under asset finance you own the system, financed over 7 to 15 years; payments are higher per kWh equivalent but you keep all the savings and own an asset that still has value at year 15.