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Solar panels for warehouses in Newtown

Most of the industrial stock around Newtown carries a large, shallow-pitched roof that was never asked to do anything. The survey measures the roof, not the postcode: cladding profile, purlin centres, remaining sheet life and the load the frame can take.

820 kWh per kWp a year at this latitude, so a 500 kWp array models at about 410,000 kWh. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.

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96 m phase 1
Drawing Newtown unit
Roof 96 x 62 m
Array 500 kWp
Yield 410,000 kWh/yr
Scale 1:500 / Rev A / SY16

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

Newtown / Powys
South Wales valley industrial estate with solar arrays on several unit roofs
Industrial stock of the kind we survey across Wales.

Distribution centre solar across Powys

What a roof in Newtown actually generates

Modelled irradiation at this latitude is 1045 kWh per square metre a year in the plane of a shallow-pitched roof, which works out at 820 kWh for every kWp installed (EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss). That is about 7 percent below the mean across the towns we cover, so the case here leans harder on how much you use on site rather than on raw generation.

We survey across the SY postcode area, starting from SY16.

Powys is the planning authority for most sites here, and the built-up area holds a population of about 10,885, 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 Newtown roof makes, month by month

What a Newtown roof makes, month by month

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

0255075100Jan: 18 kWh per kWpJanFeb: 33 kWh per kWpFebMar: 67 kWh per kWpMarApr: 99 kWh per kWpAprMay: 115 kWh per kWpMayJun: 116 kWh per kWpJun116 kWh Jul: 115 kWh per kWpJulAug: 97 kWh per kWpAugSep: 75 kWh per kWpSepOct: 45 kWh per kWpOctNov: 25 kWh per kWpNovDec: 15 kWh per kWpDec

Jun produces 7.7 times what Dec does on the same roof. A 500 kWp array here models at about 410,000 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
Jan189,000
Feb3316,500
Mar6733,500
Apr9949,500
May11557,500
Jun11658,000
Jul11557,500
Aug9748,500
Sep7537,500
Oct4522,500
Nov2512,500
Dec157,500
Source: EU PVGIS v5.2
FIG. 2 Newtown against the rest of Powys
  • Hay on Wye838
  • Welshpool831
  • Builth Wells830
  • Brecon828
  • Llandrindod Wells825
  • Newtown820

Newtown ranks 6 of 6 towns we cover in Powys on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 820 to 838, a spread of 18 kWh per kWp. Within Powys 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

Connections around Newtown are handled by National Grid Electricity Distribution, 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 Powys the planning database records 18 solar schemes totalling 39 MW, of which 1 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 Newtown

What would a 500 kWp array produce in Newtown?
Yes, and the number matters more than the sunshine. At 820 kWh per kWp a year, a 500 kWp array on a Newtown roof models at around 410,000 kWh. What changes the answer is how much of that you use on site rather than export. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.
Which network operator handles the connection in Newtown?
Applications go to National Grid Electricity Distribution, who run the network across Powys. They decide the export limit, and we handle the G99 paperwork alongside the array design.
What does Powys require for rooftop solar?
Roof-mounted panels on a commercial building usually fall under permitted development, subject to the limits on projection above the roof plane and to the building not being listed or in a conservation area. We confirm the position with Powys before the design is finalised.

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