Commercial building solar panels in Bexley
A flat commercial roof in Bexley is usually the largest surface a building owns and the one nobody is asked to manage. We check the covering and the lease together, because a roof with eight years of membrane left and a tenant with a break in three changes the answer.
916 kWh per kWp a year at this latitude, so a 210 kWp array models at about 192,000 kWh. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.
Book a roof survey in BexleyIllustrative layout for a flat commercial roof of this size, with plant, shade and access kept clear. Your own figures come from the roof survey.
- 500
- office properties on the rating list in Bexley (VOA, March 2025)
- 1,790
- retail properties, 50 of them large-format (VOA, March 2025)
- 0
- named commercial rooftop schemes on the planning record nearby (REPD, Q1 2026)
Solar PV for commercial property across Greater London
What a flat roof in Bexley generates
Modelled irradiation here is 1,177 kWh per square metre a year on a low-tilt array, which works out at 916 kWh for every kWp installed (EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss). That is around 3 percent above the mean across the towns we cover.
Commercial stock in Bexley
Bexley has 500 office premises and 1,790 shops and other retail premises on the non-domestic rating list, according to the Valuation Office Agency. By office stock the district sits in the bottom quarter of the 318 districts in England and Wales; by retail stock it sits above the median of the 318 districts in England and Wales.
The big roofs are in the 50 large-format retail units, superstores and retail warehouses in the district, about 138,000 square metres of floorspace under largely single storey roofs.
The same list carries 330 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.
Bexley ranks 3 of 50 towns we cover in Greater London on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 847 to 987, a spread of 140 kWh per kWp. On a 210 kWp commercial roof that is about 29,400 kWh a year between the strongest and weakest town in the county.
Grid connection through UK Power Networks
Connections around Bexley are handled by UK Power Networks, which sets the export limit for the site. Above 3.68 kW per phase the connection runs under G99, so the export limit is agreed in advance rather than assumed. Where the local network is constrained, an export-limited connection usually still makes the scheme work, because a commercial building uses most of what the roof makes during the working day.
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 Bexley
- How much would solar on a commercial building in Bexley generate?
- The model gives 916 kWh for every kWp installed here, so 210 kWp is about 192,000 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 Bexley?
- 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 Bexley 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 Bexley 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 Bexley?
- 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.