Commercial building solar panels in Reading
For a landlord in Reading, a roof array is increasingly a question about the EPC rating as much as the electricity bill. The survey starts with the membrane and the deck: how many years the covering has left, what the roof can carry in ballast, and where plant and its shade rule panels out.
907 kWh per kWp a year at this latitude, so a 210 kWp array models at about 190,000 kWh. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.
Book a roof survey in ReadingIllustrative layout for a flat commercial roof of this size, with plant, shade and access kept clear. Your own figures come from the roof survey.
- 203,795
- people in the Reading built-up area (ONS Census 2021)
- 1,760
- office properties on the rating list in Reading (VOA, March 2025)
- 1,420
- retail properties, 80 of them large-format (VOA, March 2025)
- 3
- named commercial rooftop schemes on the planning record nearby (REPD, Q1 2026)
Solar for offices and retail across Berkshire
How much sun a Reading roof gets
Modelled irradiation here is 1,163 kWh per square metre a year on a low-tilt array, which works out at 907 kWh for every kWp installed (EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss). That is within a few percent of the mean across the towns we cover, so the weather is not what decides the case here. Opening hours are.
The rating list for Reading
The Valuation Office Agency's rating list puts 1,760 office and 1,420 retail properties in Reading, covering about 513,000 and 399,000 square metres of floorspace respectively. By office stock the district sits in the top 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.
80 of those retail properties are superstores, large food stores, large shops or retail warehouses, together about 223,000 square metres. Single storey boxes of that size are where most commercial rooftop solar actually gets built, because the roof is big, flat or shallow, and uninterrupted.
The same list carries 190 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.
Commercial rooftop solar already planned near Reading
The Renewable Energy Planning Database records 3 roof-mounted schemes on office and business park buildings in this postcode district. These are other organisations' projects, listed from the public record, not ours.
2 of them were put through planning by Tristan Capital Partners, an investment manager or landlord rather than the occupier. That is the pattern MEES is pushing towards: the owner fits the array to protect the EPC rating and the letting, then sells the power to the tenant.
| Scheme | Applicant | Type | Capacity | Status |
|---|---|---|---|---|
| Reading International Business Park | Tristan Capital Partners (landlord) | office | 0.26 MW | Awaiting Construction |
| Arena Business Park, Acre Road | South Yorkshire Pensions Authority | office | 0.32 MW | Awaiting Construction |
| Reading International Business Park, Relief Road | Tristan Capital Partners (landlord) | office | 0.19 MW | Awaiting Construction |
The built-up area holds about 203,795 people, large enough for a retail park or two and a cluster of office buildings (ONS Census 2021 built-up areas).
Surveys run across RG postcodes, RG2 outward.
Reading ranks 2 of 8 towns we cover in Berkshire on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 891 to 910, a spread of 19 kWh per kWp. Within Berkshire that difference is small enough to ignore: where the building sits is not what decides this scheme, your consumption pattern is.
All solar on record near RG2
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 |
|---|---|---|---|---|
| Aborfield Solar Park | Wessex Solar Energy | 14 MW | Ground | Under Construction |
| Reading International Business Park - Roof Mounted Solar Panels | Tristan Capital Partners | 0.26 MW | Roof | Awaiting Construction |
| Relief Road - Solar Photovoltaic Panels | Tristan Capital Partners | 0.6 MW | Roof | Awaiting Construction |
| Arena Business Park, Acre Road- Photovoltaics Solar Panels | South Yorkshire Pensions Authority | 0.32 MW | Roof | Awaiting Construction |
| Reading International Business Park, Relief Road - Solar Panels | Tristan Capital Partners | 0.19 MW | Roof | Awaiting Construction |
| Reading International Business Park - Car Port & Solar Panels | Tristan Capital Partners | n/a | Ground | Awaiting Construction |
Grid connection through Scottish and Southern Electricity Networks
Scottish and Southern Electricity 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 Berkshire the planning database records 83 solar schemes totalling 317 MW, of which 8 are operational (REPD Q1 2026).
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 Reading
- How much would solar on a commercial building in Reading generate?
- The model gives 907 kWh for every kWp installed here, so 210 kWp is about 190,000 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.
- Is planning permission needed for panels on a Reading office or shop?
- 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 Reading 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.
- Will rooftop solar improve the EPC rating of a let building in Reading?
- 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.
- Does the grid around Reading have capacity for export?
- Scottish and Southern Electricity Networks is the distribution network operator for Berkshire. Arrays above 3.68 kW per phase connect under G99, and the application sets the export limit. It is part of the design work we arrange.