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Solar panels for warehouses in Cheltenham

Roof space is the one asset a Cheltenham unit already owns and rarely uses. What decides a scheme here is the state of the covering and the load path, which is why the survey starts on the roof rather than in a spreadsheet.

879 kWh per kWp a year at this latitude, so a 500 kWp array models at about 440,000 kWh. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.

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96 m phase 1
Drawing Cheltenham unit
Roof 96 x 62 m
Array 500 kWp
Yield 440,000 kWh/yr
Scale 1:500 / Rev A / GL50

Illustrative layout for a unit of this size. Your own figures come from the roof survey.

Cheltenham / Gloucestershire
South West industrial estate on the edge of a market town, with rooftop solar
Industrial stock of the kind we survey across South West.

Warehouse rooftop solar across Gloucestershire

What a roof in Cheltenham actually generates

Modelled irradiation at this latitude is 1124 kWh per square metre a year in the plane of a shallow-pitched roof, which works out at 879 kWh for every kWp installed (EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss). That sits within a few percent of the mean across the towns we cover, so the case rests on your consumption pattern rather than on the weather.

Distribution stock around Cheltenham clusters on M5 J10, M5 J11 and A40, which is where the large single-let roofs are.

Most of the units we look at here sit in the GL postcode area.

Cheltenham is the planning authority for most sites here, and the built-up area holds a population of about 115,940, the size that tends to be served by mid-box last-mile units rather than national hubs (ONS Census 2021 built-up areas).

FIG. 1 What a Cheltenham roof makes, month by month

What a Cheltenham roof makes, month by month

Modelled output per kWp installed, for a shallow-pitched south-facing array. Source: EU PVGIS v5.2.

050100Jan: 23 kWh per kWpJanFeb: 37 kWh per kWpFebMar: 72 kWh per kWpMarApr: 103 kWh per kWpAprMay: 119 kWh per kWpMayJun: 122 kWh per kWpJunJul: 123 kWh per kWpJul123 kWh Aug: 102 kWh per kWpAugSep: 80 kWh per kWpSepOct: 49 kWh per kWpOctNov: 29 kWh per kWpNovDec: 20 kWh per kWpDec

Jul produces 6.2 times what Dec does on the same roof. A 500 kWp array here models at about 440,000 kWh across the year, but it arrives unevenly, which is why we size against your summer daytime load and then look at whether storage is worth adding for the shoulder months.

Monthly figures as a table
MonthkWh per kWp500 kWp array
Jan2311,500
Feb3718,500
Mar7236,000
Apr10351,500
May11959,500
Jun12261,000
Jul12361,500
Aug10251,000
Sep8040,000
Oct4924,500
Nov2914,500
Dec2010,000
Source: EU PVGIS v5.2
FIG. 2 Cheltenham against the rest of Gloucestershire
  • Lydney905
  • Cirencester892
  • Stroud887
  • Cheltenham879
  • Tewkesbury878
  • Gloucester870

Cheltenham ranks 4 of 6 towns we cover in Gloucestershire on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 870 to 905, a spread of 35 kWh per kWp. Within Gloucestershire that difference is small enough to ignore: where the building sits is not what decides this scheme, your consumption pattern is.

Bars are zero based, so length is proportional to the figure. Where a county is flat, that is the finding: location is not the lever, consumption is. Source: EU PVGIS v5.2, modelled per town

Grid connection through National Grid Electricity Distribution

National Grid Electricity Distribution operates the distribution network across Gloucestershire, so the export application goes to them. Anything larger than 3.68 kW per phase falls under G99, which means an application before commissioning rather than a notification afterwards. A constrained network is not the end of a scheme. Capping export costs little when the building already absorbs most of what the roof produces.

Across Gloucestershire the planning database records 207 solar schemes totalling 1592 MW, of which 39 are operational (REPD Q1 2026).

Solar already consented near GL50

From the government's Renewable Energy Planning Database, Q1 2026. These are the schemes on record in this postcode district, which is a fair guide to how the local network has been treating export applications.

Scheme Operator Capacity Mounting Status
Sandfields Care Home, St Georges Road - Solar PV Panels Sandfields Care Home 0.15 MW Roof Awaiting Construction
St Pauls Medical Centre, Swindon Road - Solar Panels St Pauls Medical Centre 0.16 MW Roof Awaiting Construction
Ladies College Swimming Pool, Malvern Road - Solar Panels Ladies College Swimming Pool 0.16 MW Roof Awaiting Construction
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Send us the postcode

Tell us where the unit is and roughly how big the roof is. 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.

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Questions about solar in Cheltenham

Is there enough sun in Cheltenham to make this work?
Modelled at 879 kWh per kWp a year for a shallow-pitched roof at this latitude, which puts a 500 kWp array at roughly 440,000 kWh a year before shading. That array needs about 1,485 sqm of clear roof once walkways and setbacks are allowed for. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.
Who do we apply to for export in Cheltenham?
Capacity varies street by street, and only National Grid Electricity Distribution can answer it for your connection. We ask the question early, because an export-limited offer changes the design rather than killing the scheme.
Do we need planning permission in Cheltenham?
In most cases no, because roof-mounted panels on commercial buildings sit within permitted development. The exceptions are listed buildings, conservation areas and arrays that stand proud of the roof plane. We check with Cheltenham first either way.
Has anyone near GL50 already done this?
The planning database records 3 solar schemes in this postcode district, 3 of them roof mounted. That matters less as proof that it works and more as evidence of how the local network has been treating export applications. Source: Renewable Energy Planning Database, Q1 2026.

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