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Solar panels for warehouses in Morriston

Roof space is the one asset a Morriston unit already owns and rarely uses. We start with the covering and the structure, because a roof with five years left in it changes the answer entirely.

899 kWh per kWp a year at this latitude, so a 500 kWp array models at about 450,000 kWh. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.

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96 m phase 1
Drawing Morriston unit
Roof 96 x 62 m
Array 500 kWp
Yield 450,000 kWh/yr
Scale 1:500 / Rev A / Swansea

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

Morriston / Swansea
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 Swansea.

Warehouse rooftop solar across Swansea

What a roof in Morriston actually generates

Modelled irradiation at this latitude is 1147 kWh per square metre a year in the plane of a shallow-pitched roof, which works out at 899 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 Morriston roof makes, month by month

What a Morriston roof makes, month by month

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

050100Jan: 22 kWh per kWpJanFeb: 39 kWh per kWpFebMar: 73 kWh per kWpMarApr: 107 kWh per kWpAprMay: 126 kWh per kWpMayJun: 128 kWh per kWpJun128 kWh Jul: 123 kWh per kWpJulAug: 104 kWh per kWpAugSep: 81 kWh per kWpSepOct: 48 kWh per kWpOctNov: 27 kWh per kWpNovDec: 19 kWh per kWpDec

Jun produces 6.7 times what Dec does on the same roof. A 500 kWp array here models at about 450,000 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
Jan2211,000
Feb3919,500
Mar7336,500
Apr10753,500
May12663,000
Jun12864,000
Jul12361,500
Aug10452,000
Sep8140,500
Oct4824,000
Nov2713,500
Dec199,500
Source: EU PVGIS v5.2
FIG. 2 Morriston against the rest of Swansea
  • Mumbles921
  • Sketty921
  • Morriston899
  • Neath881

Morriston ranks 3 of 4 towns we cover in Swansea on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 881 to 921, a spread of 40 kWh per kWp. Within Swansea 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 Swansea, 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 Morriston

Is there enough sun in Morriston to make this work?
Modelled at 899 kWh per kWp a year for a shallow-pitched roof at this latitude, which puts a 500 kWp array at roughly 450,000 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 Morriston?
Capacity varies street by street, and only National Grid Electricity Distribution can answer it for your connection. We ask the question early, because an export-limited offer changes the design rather than killing the scheme.

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