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Solar panels for warehouses in Southend-on-Sea

Most of the industrial stock around Southend-on-Sea carries a large, shallow-pitched roof that was never asked to do anything. Each survey records the cladding profile, the usable area once rooflights and plant are removed, and the export limit worth applying for.

942 kWh per kWp a year at this latitude, so a 500 kWp array models at about 471,000 kWh. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.

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96 m phase 1
Drawing Southend-on-Sea unit
Roof 96 x 62 m
Array 500 kWp
Yield 471,000 kWh/yr
Scale 1:500 / Rev A / SS2

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

Southend-on-Sea / Essex
Distribution estate in the east of England with solar arrays on several roofs
Industrial stock of the kind we survey across East of England.

Distribution centre solar across Essex

What a roof in Southend-on-Sea actually generates

Modelled irradiation at this latitude is 1206 kWh per square metre a year in the plane of a shallow-pitched roof, which works out at 942 kWh for every kWp installed (EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss). That is around 6 percent above the mean across the towns we cover, which is as good as UK rooftop gets outside the south coast.

We survey across the SS postcode area, starting from SS2.

Southend-on-Sea is the planning authority for most sites here, and the built-up area holds a population of about 182,305, 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 Southend-on-Sea roof makes, month by month

What a Southend-on-Sea 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: 40 kWh per kWpFebMar: 75 kWh per kWpMarApr: 109 kWh per kWpAprMay: 127 kWh per kWpMayJun: 130 kWh per kWpJunJul: 131 kWh per kWpJul131 kWh Aug: 111 kWh per kWpAugSep: 87 kWh per kWpSepOct: 53 kWh per kWpOctNov: 32 kWh per kWpNovDec: 22 kWh per kWpDec

Jul produces 6.0 times what Dec does on the same roof. A 500 kWp array here models at about 471,000 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
Feb4020,000
Mar7537,500
Apr10954,500
May12763,500
Jun13065,000
Jul13165,500
Aug11155,500
Sep8743,500
Oct5326,500
Nov3216,000
Dec2211,000
Source: EU PVGIS v5.2
FIG. 2 Southend-on-Sea against the rest of Essex
  • Clacton-on-Sea973
  • Colchester953
  • Canvey Island945
  • Southend-on-Sea942
  • Basildon933
  • Braintree932
  • Chelmsford930
  • Grays927
  • Brentwood913

Southend-on-Sea ranks 4 of 10 towns we cover in Essex on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 908 to 973, a spread of 65 kWh per kWp. On a 500 kWp array that is about 32,500 kWh a year between the strongest and weakest town in the county.

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 SS2

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
London Southend Airport London Southend Airport Ltd 3 MW Ground Revised
London Southend Airport London Southend Airport Co. 2.5 MW Ground Operational
David Lloyd Health And Fitness Centre, Snakes Lane - Solar Panels Custom Solar Limited 0.47 MW Roof Application Submitted
Spire Wellesley Hospital, Eastern Avenue - Solar Panels Spire Wellesley Hospital 0.21 MW Roof Awaiting Construction

Grid connection through UK Power Networks

UK Power Networks operates the distribution network across Essex, 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 Essex the planning database records 221 solar schemes totalling 2787 MW, of which 46 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.

We pass your details to our MCS-certified installation partner so they can quote. Read the privacy notice.

Questions about solar in Southend-on-Sea

Is there enough sun in Southend-on-Sea to make this work?
Modelled at 942 kWh per kWp a year for a shallow-pitched roof at this latitude, which puts a 500 kWp array at roughly 471,000 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 Southend-on-Sea?
Capacity varies street by street, and only UK Power 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 Southend-on-Sea?
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 Southend-on-Sea first either way.
Has anyone near SS2 already done this?
The planning database records 4 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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