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Solar panels for warehouses in Woking

A Woking warehouse roof sits idle through exactly the hours its occupier buys the most expensive electricity. 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.

905 kWh per kWp a year at this latitude, so a 500 kWp array models at about 453,000 kWh. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.

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96 m phase 1
Drawing Woking unit
Roof 96 x 62 m
Array 500 kWp
Yield 453,000 kWh/yr
Scale 1:500 / Rev A / GU21

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

Woking / Surrey
Home Counties distribution estate with solar arrays on several unit roofs
Industrial stock of the kind we survey across South East.

Logistics solar PV across Surrey

What a roof in Woking actually generates

Modelled irradiation at this latitude is 1162 kWh per square metre a year in the plane of a shallow-pitched roof, which works out at 905 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 Woking clusters on A320 and M25 J11, which is where the large single-let roofs are.

Surveys run across GU postcodes, GU21 outward.

Woking is the planning authority for most sites here, and the built-up area holds a population of about 75,660, so the stock here runs to trade counters, light industrial terraces and the occasional larger shed (ONS Census 2021 built-up areas).

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

What a Woking roof makes, month by month

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

050100Jan: 25 kWh per kWpJanFeb: 38 kWh per kWpFebMar: 73 kWh per kWpMarApr: 105 kWh per kWpAprMay: 120 kWh per kWpMayJun: 125 kWh per kWpJunJul: 126 kWh per kWpJul126 kWh Aug: 106 kWh per kWpAugSep: 83 kWh per kWpSepOct: 52 kWh per kWpOctNov: 30 kWh per kWpNovDec: 22 kWh per kWpDec

Jul produces 5.7 times what Dec does on the same roof. A 500 kWp array here models at about 453,000 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
Jan2512,500
Feb3819,000
Mar7336,500
Apr10552,500
May12060,000
Jun12562,500
Jul12663,000
Aug10653,000
Sep8341,500
Oct5226,000
Nov3015,000
Dec2211,000
Source: EU PVGIS v5.2
FIG. 2 Woking against the rest of Surrey
  • Redhill916
  • Dorking916
  • Leatherhead910
  • Guildford908
  • Woking905
  • Weybridge905
  • Farnham903
  • Staines903
  • Camberley900

Woking ranks 5 of 10 towns we cover in Surrey on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 900 to 916, a spread of 16 kWh per kWp. Within Surrey 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 UK Power Networks

Connections around Woking 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 warehouse uses most of what the roof makes during the working day.

Across Surrey the planning database records 74 solar schemes totalling 182 MW, of which 6 are operational (REPD Q1 2026).

Solar already consented near GU21

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
Kestrel Way - Solar Panels Digital Realty 1.47 MW Roof Awaiting Construction
Mclaren Technology Centre, Chertsey Road - Solar Panels McLaren Group Limited 2.56 MW Roof Awaiting Construction
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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 Woking

What would a 500 kWp array produce in Woking?
Yes, and the number matters more than the sunshine. At 905 kWh per kWp a year, a 500 kWp array on a Woking roof models at around 453,000 kWh. What changes the answer is how much of that you use on site rather than export. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.
Which network operator handles the connection in Woking?
Applications go to UK Power Networks, who run the network across Surrey. They decide the export limit, and we handle the G99 paperwork alongside the array design.
What does Woking require for rooftop solar?
Roof-mounted panels on a commercial building usually fall under permitted development, subject to the limits on projection above the roof plane and to the building not being listed or in a conservation area. We confirm the position with Woking before the design is finalised.
Has anyone near GU21 already done this?
The planning database records 2 solar schemes in this postcode district, 2 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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