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Solar panels for warehouses in Hengrove

The economics of a Hengrove rooftop array turn on how much of the generation the occupier uses on site. Each survey records the cladding profile, the usable area once rooflights and plant are removed, and the export limit worth applying for.

903 kWh per kWp a year at this latitude, so a 500 kWp array models at about 452,000 kWh. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.

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96 m phase 1
Drawing Hengrove unit
Roof 96 x 62 m
Array 500 kWp
Yield 452,000 kWh/yr
Scale 1:500 / Rev A / Bristol

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

Hengrove / Bristol
Aerial view of an industrial estate where some warehouse roofs carry solar arrays and others are bare steel
Industrial stock of the kind we survey across Bristol.

Warehouse rooftop solar across Bristol

What a roof in Hengrove actually generates

Modelled irradiation at this latitude is 1154 kWh per square metre a year in the plane of a shallow-pitched roof, which works out at 903 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.

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

What a Hengrove roof makes, month by month

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

050100Jan: 24 kWh per kWpJanFeb: 39 kWh per kWpFebMar: 73 kWh per kWpMarApr: 107 kWh per kWpAprMay: 123 kWh per kWpMayJun: 123 kWh per kWpJunJul: 126 kWh per kWpJul126 kWh Aug: 104 kWh per kWpAugSep: 83 kWh per kWpSepOct: 51 kWh per kWpOctNov: 29 kWh per kWpNovDec: 21 kWh per kWpDec

Jul produces 6.0 times what Dec does on the same roof. A 500 kWp array here models at about 452,000 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
Jan2412,000
Feb3919,500
Mar7336,500
Apr10753,500
May12361,500
Jun12361,500
Jul12663,000
Aug10452,000
Sep8341,500
Oct5125,500
Nov2914,500
Dec2110,500
Source: EU PVGIS v5.2
FIG. 2 Hengrove against the rest of Bristol
  • Bishopston908
  • Bedminster906
  • Hengrove903
  • Keynsham902
  • Filton895

Hengrove ranks 3 of 5 towns we cover in Bristol on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 895 to 908, a spread of 13 kWh per kWp. Within Bristol 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

National Grid Electricity Distribution operates the distribution network across Bristol, 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.

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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 Hengrove

How much does a warehouse roof in Hengrove generate?
The model gives 903 kWh for every kWp installed here, so 500 kWp comes out at about 452,000 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 Hengrove have capacity?
National Grid Electricity Distribution is the distribution network operator for Bristol. 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.

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