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Solar panels for warehouses in Braintree

What makes a Braintree 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.

932 kWh per kWp a year at this latitude, so a 500 kWp array models at about 466,000 kWh. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.

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96 m phase 1
Drawing Braintree unit
Roof 96 x 62 m
Array 500 kWp
Yield 466,000 kWh/yr
Scale 1:500 / Rev A / CM7

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

Braintree / 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.

Logistics solar PV across Essex

What a roof in Braintree actually generates

Modelled irradiation at this latitude is 1191 kWh per square metre a year in the plane of a shallow-pitched roof, which works out at 932 kWh for every kWp installed (EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss). That is around 5 percent above the mean across the towns we cover, which is as good as UK rooftop gets outside the south coast.

Distribution stock around Braintree clusters on A120 and A131, which is where the large single-let roofs are.

Surveys run across CM postcodes, CM7 outward.

Braintree is the planning authority for most sites here, and the built-up area holds a population of about 43,190, 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 Braintree roof makes, month by month

What a Braintree 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: 125 kWh per kWpMayJun: 128 kWh per kWpJun128 kWh Jul: 128 kWh per kWpJulAug: 109 kWh per kWpAugSep: 86 kWh per kWpSepOct: 54 kWh per kWpOctNov: 32 kWh per kWpNovDec: 22 kWh per kWpDec

Jun produces 5.8 times what Dec does on the same roof. A 500 kWp array here models at about 466,000 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
May12562,500
Jun12864,000
Jul12864,000
Aug10954,500
Sep8643,000
Oct5427,000
Nov3216,000
Dec2211,000
Source: EU PVGIS v5.2
FIG. 2 Braintree against the rest of Essex
  • Colchester953
  • Canvey Island945
  • Southend-on-Sea942
  • Basildon933
  • Braintree932
  • Chelmsford930
  • Grays927
  • Brentwood913
  • Harlow908

Braintree ranks 6 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 CM7

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
Land west of Hawkspur Green (Hill Hall Solar) Lightsource Renewable Energy 4.9 MW Ground Operational
Four Elms Solar Array F H Nash Limited 0.17 MW Ground Operational
Four Elms, Bardfield Road - Solar Array F H Nash Limited 0.35 MW Ground Awaiting Construction
Antislip Antiwear Treads International, Swinbourne Drive - Solar Panels AATI Limited 0.15 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.

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Questions about solar in Braintree

How much does a warehouse roof in Braintree generate?
The model gives 932 kWh for every kWp installed here, so 500 kWp comes out at about 466,000 kWh a year before any shading losses. You need roughly 1,485 sqm of clear roof to fit it. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.
Does the grid around Braintree have capacity?
UK Power Networks is the distribution network operator for Essex. Anything above 3.68 kW per phase connects under G99, and the application sets the export limit. We submit it as part of the design.
Is planning permission needed for panels on a Braintree unit?
Usually permitted development covers it. We still put the question to Braintree before design sign-off, and we tell you early if a full application is needed rather than discovering it late.
Has anyone near CM7 already done this?
The planning database records 4 solar schemes in this postcode district, 1 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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