How much does commercial solar cost in the West Midlands?

The honest answer to “how much does commercial solar cost” is that it depends — but not in the hand-waving way installers usually mean. It depends on a handful of specific things about your building and how it uses power, and once those are known the figure becomes clear. Here’s what actually moves the number for a business in the West Midlands.

The short answer

Commercial solar is priced against your building and your electricity consumption, not a headline rate. The cost is driven by system size, roof type and access, and whether the electrical supply needs work. Two roofs of the same area can be very different jobs. That’s why we survey first and quote on the specifics rather than a per-kilowatt figure that changes the moment someone visits.

What drives the cost

Four things account for most of the difference between one commercial quote and another:

• System size. Larger arrays cost more in kit, but the price per unit of generation usually improves with scale. Size is set by your usable roof and your daytime demand.
• Roof type and condition. A modern steel-profile roof is quick to work on. An older or fragile roof needs protecting — boards, careful access, sometimes tile repairs — which takes more time.
• The electrical supply. Most commercial premises run on a three-phase supply (the heavier supply larger equipment needs). If it needs upgrading or reconfiguring, that adds to the job.
• Access and working around the business. A site that has to keep trading while the work happens is staged differently to an empty roof.

You can get a sense of what shapes a system on our commercial solar page, and the same survey-first thinking applies to residential solar and battery too.

Why we don’t quote per kilowatt

A per-kilowatt price is a useful marketing number and a poor engineering one. It hides exactly the things that matter — the roof, the supply, the access — behind a single figure, which means it’s either padded to cover the worst case or it moves once the real job is understood. We’d rather do the survey, look at your consumption data, and give you a figure that holds. Decisions on commercial solar should rest on your numbers, not a brochure. For the technical background on planning and permitted development for commercial installations, the Planning Portal is a good neutral reference, and the Energy Saving Trust covers solar basics in plain terms.

A real example: 50kW, 300 panels

Our installation at Birmingham Business Park, near the NEC, was a 50kW system — 300 panels — for a multinational working towards a CO2 reduction goal. The roof was fragile enough that we worked entirely off roof boards and replaced damaged tiles as we went, so the building was left better than we found it. To date the system has generated 150MWh.

The point isn’t the exact price — it’s that a job like this is defined as much by the roof and the care it needed as by the panel count. A per-kilowatt quote would have told you almost nothing useful about it.

How to know it’s worth it

Commercial solar earns its keep by cutting the electricity you buy during working hours. So the question isn’t really “what does it cost” but “what does it save against what it costs, on our actual usage”. That comes from your consumption data and the roof, which is exactly what we look at before recommending anything. If the numbers don’t stack up for your site, we’ll tell you.

If you’d like a figure built around your building rather than a rule of thumb, start a commercial enquiry and we’ll arrange a survey.