Commercial building solar panels in Stowmarket
Commercial roofs in Stowmarket tend to be flat, membrane covered and cluttered with plant, which shapes the layout more than the size does. What decides a scheme is the roof covering, the parapet height and the plant layout, which is why the survey happens on the roof rather than from a satellite image.
922 kWh per kWp a year at this latitude, so a 210 kWp array models at about 194,000 kWh. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.
Book a roof survey in StowmarketIllustrative layout for a flat commercial roof of this size, with plant, shade and access kept clear. Your own figures come from the roof survey.
- 21,535
- people in the Stowmarket built-up area (ONS Census 2021)
- 510
- office properties on the rating list in Mid Suffolk (VOA, March 2025)
- 490
- retail properties, 0 of them large-format (VOA, March 2025)
- 0
- named commercial rooftop schemes on the planning record nearby (REPD, Q1 2026)
Commercial rooftop solar across Suffolk
Yield on a Stowmarket commercial roof
Modelled irradiation here is 1,180 kWh per square metre a year on a low-tilt array, which works out at 922 kWh for every kWp installed (EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss). That is around 4 percent above the mean across the towns we cover.
How many commercial buildings Mid Suffolk has
On the Valuation Office Agency's count, Mid Suffolk holds 490 retail and 510 office properties on the rating list. By office stock the district sits in the bottom quarter of the 318 districts in England and Wales; by retail stock it sits in the bottom quarter of the 318 districts in England and Wales.
Here the stock leans towards offices rather than large-format retail, so the typical roof is smaller and busier with plant. The arrays are smaller too, but an office uses its electricity in daylight hours and so consumes almost all of what it generates.
The same list carries 210 hotel, leisure and assembly properties in the district. Leisure centres and hotels run seven days a week, which puts weekend generation to use that an office would export.
Source: Valuation Office Agency, Non-domestic rating: business floorspace, 31 March 2025 (published December 2025), counts and floorspace by special category code and local authority district, England and Wales.
The built-up area holds about 21,535 people, so the stock here runs to high street premises, a supermarket or two and the odd hotel (ONS Census 2021 built-up areas).
We arrange surveys across the IP postcode area, starting from IP14.
Stowmarket ranks 6 of 8 towns we cover in Suffolk on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 905 to 956, a spread of 51 kWh per kWp. On a 210 kWp commercial roof that is about 10,710 kWh a year between the strongest and weakest town in the county.
Grid connection through UK Power Networks
UK Power Networks is the network operator here, and their answer on export capacity shapes the design. Any commercial array above 3.68 kW per phase connects under G99 rather than G98, and the application fixes what you are allowed to push back onto the network. If the local network is tight, limiting export rarely breaks the case here: most of the generation is consumed on site while the building is working.
Across Suffolk the planning database records 118 solar schemes totalling 1369 MW, of which 23 are operational (REPD Q1 2026).
All solar on record near IP14
Every scheme in this postcode district in the government's Renewable Energy Planning Database, Q1 2026, ground and roof mounted, commercial or not. None of them is ours. Together they are a fair guide to how the local network has been treating export applications.
| Scheme | Operator | Capacity | Mounting | Status |
|---|---|---|---|---|
| Gainsborough Road Car Park - Solar PV arrays | Babergh & Mid Suffolk DC | 0.19 MW | Roof | Awaiting Construction |
| Blacksmiths Lane, Middlewood Green - Solar Farm | Low Carbon Limited | 30 MW | Ground | Awaiting Construction |
| PPG Letter, Needham Road - Solar Pv Panels | PPG Industries | 0.5 MW | Roof | Application Refused |
| Climax Molybdenum UK Limited, Needham Road - Solar PV Panels | Climax Molybdenum UK Ltd | 1.2 MW | Ground | Awaiting Construction |
| PPG, Letter Site - Solar Panels | PPG Industries (UK) Limited | 0.43 MW | Roof | Awaiting Construction |
Send us the postcode
Tell us where the building is, roughly how big the roof is, and whether you own it or lease it. We come back with what it can carry, what it would generate against your consumption, and the three ways to pay for it.
Lenzie Consulting Ltd arranges the survey and passes your details to our MCS-certified installation partner so they can quote.
Questions about solar in Stowmarket
- How much would solar on a commercial building in Stowmarket generate?
- The model gives 922 kWh for every kWp installed here, so 210 kWp is about 194,000 kWh a year before shading losses. Allow roughly 1,390 m² of roof for it. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.
- Do we need planning permission for solar on a commercial building in Mid Suffolk?
- Usually not a full application. In England, panels on the roof of a non-domestic building are permitted development under Class J of Part 14 of the General Permitted Development Order, with no capacity cap since December 2023. Above 50 kW, which covers most commercial arrays, you must first apply to Mid Suffolk for a determination on prior approval of the design and appearance, in particular glare on neighbouring land. On a flat roof panels may stand no more than 1 metre above the roof and must sit at least 1 metre from its edge, and listed buildings and scheduled monuments are excluded. See our planning permission guide for the detail.
- Does solar help a Stowmarket landlord meet MEES?
- It can. A non-domestic EPC is an asset rating, and on-site generation counts in the calculation, so an array usually lifts the score. Let property in England and Wales must be EPC E or better today. The government's interim response of 18 June 2026 proposes EPC B, where cost effective, from 2031 for let buildings over 1,000 m², and drops the EPC C step once planned for 2027. How far solar moves a particular building depends on its fabric and services, which is why the EPC assessor models it before anything is fitted.
- Which network operator handles the connection in Stowmarket?
- Capacity varies street by street and only UK Power Networks can answer it for your connection. We ask early, because an export-limited offer changes the design rather than ending the scheme, and most commercial buildings use most of what they generate anyway.