Is there enough sun in Gloucester to make this work?

Modelled at 870 kWh per kWp a year for a shallow-pitched roof at this latitude, which puts a 500 kWp array at roughly 435,000 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 Gloucester?

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 Gloucester?

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 Gloucester first either way.

Has anyone near GL4 already done this?

The planning database records 6 solar schemes in this postcode district, 5 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.

Solar panels for warehouses in Gloucester

Roof space is the one asset a Gloucester unit already owns and rarely uses. We start with the covering and the structure, because a roof with five years left in it changes the answer entirely.

870 kWh per kWp a year at this latitude, so a 500 kWp array models at about 435,000 kWh. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.

Book a roof survey in Gloucester

Drawing Gloucester unit

Roof 96 x 62 m

Array 500 kWp

Yield 435,000 kWh/yr

Scale 1:500 / Rev A / GL4

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

Gloucester / 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 Gloucester actually generates

Modelled irradiation at this latitude is 1116 kWh per square metre a year in the plane of a shallow-pitched roof, which works out at 870 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 Gloucester clusters on M5 J11, M5 J12 and A38, which is where the large single-let roofs are.

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

Gloucester is the planning authority for most sites here, and the built-up area holds a population of about 118,555, 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 Gloucester roof makes, month by month

Jul produces 6.4 times what Dec does on the same roof. A 500 kWp array here models at about 435,000 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

Month	kWh per kWp	500 kWp array
Jan	23	11,500
Feb	37	18,500
Mar	70	35,000
Apr	103	51,500
May	118	59,000
Jun	121	60,500
Jul	122	61,000
Aug	101	50,500
Sep	79	39,500
Oct	48	24,000
Nov	28	14,000
Dec	19	9,500

Source: EU PVGIS v5.2

FIG. 2 Gloucester against the rest of Gloucestershire

Lydney905
Cirencester892
Stroud887
Cheltenham879
Tewkesbury878
Gloucester870

Gloucester ranks 6 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

Connections around Gloucester are handled by National Grid Electricity Distribution, 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 warehouse uses most of what the roof makes during the working day.

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

Solar already consented near GL4

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
Gloucester Academy	Greenshaw Learning Trust	0.2 MW	Roof	Awaiting Construction
Brookthorpe Solar Farm	PS Renewables	8 MW	Ground	Awaiting Construction
Morrisons Supermarket, Glevum Way - Solar Panels	Morrison	n/a	Roof	Awaiting Construction
Tenpin Centre, Severn Barnwood Link Road - Solar Panels	Ivegate Limited	0.22 MW	Roof	Awaiting Construction
Unilever UK, Corinium Avenue - Solar Panels	Unilever UK	3.5 MW	Roof	Awaiting Construction
Unilever UK - Solar Panels	Unilever UK	0.19 MW	Roof	Awaiting Construction

Book the survey

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.

Questions about solar in Gloucester

Is there enough sun in Gloucester to make this work?: Modelled at 870 kWh per kWp a year for a shallow-pitched roof at this latitude, which puts a 500 kWp array at roughly 435,000 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 Gloucester?: 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 Gloucester?: 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 Gloucester first either way.
Has anyone near GL4 already done this?: The planning database records 6 solar schemes in this postcode district, 5 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.

Nearby

All Gloucestershire locations