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Solar panels for warehouses in Maidenhead

What makes a Maidenhead scheme work is rarely the panels. It is the condition of the roof underneath them. Each survey records the cladding profile, the usable area once rooflights and plant are removed, and the export limit worth applying for.

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 Maidenhead unit
Roof 96 x 62 m
Array 500 kWp
Yield 453,000 kWh/yr
Scale 1:500 / Rev A / SL6

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

Maidenhead / Berkshire
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 Berkshire

What a roof in Maidenhead 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 Maidenhead clusters on M4 J8/9, A404(M) and A4, which is where the large single-let roofs are.

Surveys run across SL postcodes, SL6 outward.

Windsor and Maidenhead is the planning authority for most sites here, and the built-up area holds a population of about 67,375, 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 Maidenhead roof makes, month by month

What a Maidenhead 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: 39 kWh per kWpFebMar: 73 kWh per kWpMarApr: 105 kWh per kWpAprMay: 120 kWh per kWpMayJun: 125 kWh per kWpJun125 kWh Jul: 125 kWh per kWpJulAug: 107 kWh per kWpAugSep: 83 kWh per kWpSepOct: 52 kWh per kWpOctNov: 30 kWh per kWpNovDec: 22 kWh per kWpDec

Jun 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
Feb3919,500
Mar7336,500
Apr10552,500
May12060,000
Jun12562,500
Jul12562,500
Aug10753,500
Sep8341,500
Oct5226,000
Nov3015,000
Dec2211,000
Source: EU PVGIS v5.2
FIG. 2 Maidenhead against the rest of Berkshire
  • Thatcham910
  • Reading907
  • Maidenhead905
  • Newbury904
  • Slough903
  • Windsor901
  • Wokingham898
  • Bracknell891

Maidenhead ranks 3 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.

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

Solar already consented near SL6

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
Horizon, Hurley - Solar Panels Federated Hermes 1.33 MW Ground & Roof Application Submitted
Furze Platt Senior School, Furze Platt Road - Solar Panels Furze Platt Senior School 0.25 MW Roof Awaiting Construction
John Guest Speedfit Limited, Oldfield Road - Solar Panels Reliance Worldwide Corporation (UK) Limited n/a Roof Application Refused
Iomart, Clivemont Road - Solar Panels 3ti Energy Hubs Limited 0.29 MW Roof Operational

Grid connection through Scottish and Southern Electricity Networks

Connections around Maidenhead are handled by Scottish and Southern Electricity 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 Berkshire the planning database records 83 solar schemes totalling 317 MW, of which 8 are operational (REPD Q1 2026).

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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 Maidenhead

Is there enough sun in Maidenhead to make this work?
Modelled at 905 kWh per kWp a year for a shallow-pitched roof at this latitude, which puts a 500 kWp array at roughly 453,000 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 Maidenhead?
Capacity varies street by street, and only Scottish and Southern Electricity Networks 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 Windsor and Maidenhead?
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 Windsor and Maidenhead first either way.
Has anyone near SL6 already done this?
The planning database records 4 solar schemes in this postcode district, 4 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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