solar panels for industrial units in Cardiff

Serving Cardiff and the wider South Glamorgan area, including Penarth, Caerphilly, Barry.

Why solar PV makes sense for Cardiff industrial units

Cardiff is the capital of Wales and the commercial centre of the South Wales region, with an industrial base spanning logistics, manufacturing, food production, and a growing media and technology sector. The city’s industrial units, concentrated around the Bay, Wentloog, and the eastern approaches, carry the kind of large, accessible roofs that solar PV is built for. Cardiff also benefits from reasonable South Wales irradiance, better than much of the north of the UK. A typical Cardiff SME running an industrial unit spends around £38,000 a year on grid electricity, with distribution and manufacturing operators spending well beyond that.

Cardiff Council has a 2030 net zero target through the Cardiff One Planet Strategy, and the policy environment in Wales is distinctive. The Welsh Government has committed the public sector to net zero by 2030 and operates the Business Wales programme, which provides grants and advisory support to SMEs across Wales, including for energy efficiency and renewables. For owners and tenants of Cardiff industrial units, that means a supportive devolved framework that actively encourages on-site generation.

The economics in Cardiff are driven by daytime industrial activity. Distribution despatch, food production, and manufacturing all draw power through the hours solar generates, so a well-sized array is consumed on site rather than exported. The more of your own electricity you use directly, the more you save against the full grid retail tariff, and Cardiff’s mix of daytime-occupied operations supports high self-consumption on most projects.

Cardiff’s industrial geography, where solar makes the most sense

Wentloog Industrial Estate, on the eastern edge of the city near the M4 and the Severn estuary, is one of Cardiff’s largest industrial and distribution concentrations. It hosts logistics, manufacturing, and trade tenants in clear-span buildings with substantial roof areas, many suited to arrays in the 300 kW to 1 MW range. The estate’s strong motorway links have drawn distribution operators whose daytime loads line up well with solar generation, making Wentloog a leading solar opportunity in South Wales.

Cardiff Bay Business Park, in the regenerated docklands south of the centre, mixes commercial, light industrial, and media occupiers in modern buildings, many with PV-ready roofs. Capital Business Park, to the east near St Mellons, is a well-established industrial and logistics park with extensive modern roof stock and distribution tenants serving the region. Hadfield Road and Pengam Green, closer to the centre, carry a mix of trade, light industrial, and distribution units, where roof types vary and a survey is the right starting point.

Across the wider city, the corridors along the M4 concentrate further distribution and industrial development serving Cardiff, Newport, and the South Wales valleys. Across all of these the constraint on a solar project is usually the available capacity on the National Grid Electricity Distribution network rather than the roof, so early DNO engagement is important.

Cardiff Council and Welsh Government decarbonisation, and what they mean for your project

Cardiff Council’s 2030 net zero target sits behind the Cardiff One Planet Strategy. Most rooftop solar on commercial buildings is Permitted Development under the relevant Welsh planning provisions, which mirror the GPDO approach in England for the great majority of industrial buildings, so for standard industrial units no planning application is usually required. Listed buildings and conservation areas need consent, but these are uncommon in the city’s industrial districts at Wentloog, Capital Business Park, and the Bay.

The defining feature in Wales is the devolved policy framework. The Welsh Government’s commitment to a net zero public sector by 2030 creates strong demand for renewables across the supply chain serving Welsh public bodies, and the Business Wales programme offers grants and advisory support to SMEs, including for energy and renewable projects. Availability and scheme detail change over time, so it is worth confirming the current position through Business Wales when you plan. The 100% Annual Investment Allowance applies to every Cardiff limited company regardless, providing up to a 25% effective tax reduction on the install in year one. We set out the detail on the grants and funding page.

There is a procurement dimension that is especially pronounced in Wales. With the public sector targeting 2030 net zero, suppliers to Welsh government bodies, the NHS in Wales, and local authorities face growing expectations to demonstrate carbon reduction. For a Cardiff industrial business serving the public sector, on-site solar is increasingly a tender advantage as well as an energy saving.

Local cost data, what Cardiff industrial operators actually pay

A Cardiff industrial unit of 20,000 to 70,000 sq ft typically spends £36,000 to £120,000 a year on electricity, with food production, cold-chain, and high-throughput distribution operators well above that. Larger Wentloog and Capital Business Park distribution buildings spend more again. With reasonable South Wales irradiance, a roof-sized array commonly covers a third to a half of the daytime load in its first year.

Indicative installed cost per kW for a Cardiff industrial unit in 2026:

• £870 to £1,120 per kW for systems below 100 kW
• £750 to £930 per kW for systems of 100 to 500 kW, the typical single-unit band
• £700 to £860 per kW above 500 kW for large distribution sheds

Limited companies expensing the install under the 100% Annual Investment Allowance see an effective 25% reduction in net cost in year one. Asset finance spreads the cost over 5 to 10 years and is usually cash-flow positive from month one for a daytime-occupied unit. The cost guide sets out the financing routes with worked examples.

Grid connection in Cardiff runs through National Grid Electricity Distribution. G99 applications for systems above 17 kW per phase typically take several months, and longer on constrained parts of the network. We submit the application straight after the structural survey so the connection runs in parallel with design and procurement.

A Cardiff install in practice, a Wentloog distribution unit

Take a representative recent project: a 380 kW rooftop array on a Wentloog distribution unit occupied by a regional logistics operator serving retail and public-sector clients. The building is a steel-portal shed of around 4,500 sq m, with daytime picking, despatch, and chilled storage. Pre-install electricity consumption sat near 750,000 kWh a year.

The system uses roughly 690 panels feeding string inverters tied into the existing three-phase supply. First-year generation reached 345,000 kWh, in line with the model. Self-consumption ran near 83% because the chilled storage and despatch loads sit within daytime hours, with the surplus exported under the Smart Export Guarantee. Annual savings landed close to £74,000 in year one through avoided grid import, putting simple payback inside 5.9 years.

The wider benefit was strongest in the operator’s public-sector work. With the Welsh Government targeting net zero by 2030, its public-sector clients increasingly required suppliers to show carbon reduction, and the rooftop array gave the operator auditable Scope 2 evidence to present in tenders. That reflects a pattern across South Wales, where the devolved net zero agenda shapes which operators win and keep public-sector contracts.

Postcodes and industrial areas covered across Cardiff

We deliver solar PV for industrial units across all Cardiff postcode districts:

• East Cardiff: CF3, CF23, CF24 covering Wentloog, Capital Business Park, St Mellons, and Pengam Green
• Bay and docklands: CF10, CF11 covering Cardiff Bay Business Park and the regenerated docks
• Central and inner: CF24 covering Hadfield Road and the inner commercial corridors
• West Cardiff: CF5 covering the western trade and light industrial units
• North Cardiff: CF14, CF15 covering the northern commercial and industrial premises

Most Cardiff sites are reachable for same-day survey visits, and our teams are familiar with the planning and grid arrangements that apply across South Wales.

Other commercial areas adjoining Cardiff

Cardiff’s industrial market runs across South Wales and into the wider region, and many of our clients hold multi-site estates here. We also deliver solar PV for industrial units in:

• Newport, the major M4 logistics corridor and the steel-sector estates to the east
• Penarth, Vale of Glamorgan commercial and light industrial units
• Barry, the dockside and town-edge industrial estates
• Caerphilly, the valleys manufacturing and distribution corridor
• Pontypridd, the Taff valley light industrial and trade units

Each falls under its own council and the wider Welsh planning framework, and the nearest major centres of Newport, Swansea, and Bristol complete a service area where we maintain consistent design and install standards across every project.

Get a free quote for your Cardiff industrial unit

We have delivered commercial solar across Cardiff and South Wales for years, and we understand the devolved Welsh policy framework, the Business Wales support routes, and the grid connection process that shape a project here. Every quote starts with a free desk-based feasibility study from your half-hourly meter data and roof drawings, with no site visit needed for the first proposal. You will have an indicative system size, generation forecast, and return figure within 7 working days.

If the numbers work, our engineers carry out a one-day structural and electrical survey, then issue a fixed-price proposal with full yield modelling and financial analysis. Most Cardiff industrial installs run from first conversation to commissioning in around 6 to 9 months, with the G99 grid connection usually the longest single item.

Whether you run a Wentloog distribution shed, a Cardiff Bay media facility, or a Capital Business Park logistics unit, we will tell you honestly whether your roof suits solar before you commit, and help you align the install with Welsh public-sector carbon expectations where it matters. When you are ready, request a quote and we will start the feasibility.