What would a 500 kWp array produce in Neath?

Yes, and the number matters more than the sunshine. At 881 kWh per kWp a year, a 500 kWp array on a Neath roof models at around 441,000 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 Neath?

Applications go to National Grid Electricity Distribution, who run the network across Swansea. They decide the export limit, and we handle the G99 paperwork alongside the array design.

What does Neath Port Talbot 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 Neath Port Talbot before the design is finalised.

Solar panels for warehouses in Neath

Most of the industrial stock around Neath 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.

881 kWh per kWp a year at this latitude, so a 500 kWp array models at about 441,000 kWh. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.

Book a roof survey in Neath

Drawing Neath unit

Roof 96 x 62 m

Array 500 kWp

Yield 441,000 kWh/yr

Scale 1:500 / Rev A / SA10

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

Neath / Swansea

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 Swansea

What a roof in Neath actually generates

Modelled irradiation at this latitude is 1127 kWh per square metre a year in the plane of a shallow-pitched roof, which works out at 881 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.

We survey across the SA postcode area, starting from SA10.

Neath Port Talbot is the planning authority for most sites here, and the built-up area holds a population of about 40,730, 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 Neath roof makes, month by month

Jun produces 6.5 times what Dec does on the same roof. A 500 kWp array here models at about 441,000 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

Month	kWh per kWp	500 kWp array
Jan	22	11,000
Feb	39	19,500
Mar	72	36,000
Apr	106	53,000
May	123	61,500
Jun	124	62,000
Jul	119	59,500
Aug	101	50,500
Sep	80	40,000
Oct	48	24,000
Nov	28	14,000
Dec	19	9,500

Source: EU PVGIS v5.2

FIG. 2 Neath against the rest of Swansea

Mumbles921
Sketty921
Morriston899
Neath881

Neath ranks 4 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

Solar already consented near SA10

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
Sun Fields, Gelli Bwch Farm -Solar Array	Hale Construction Limited	1.3 MW	Ground	Awaiting Construction

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.

Book the survey

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.

Questions about solar in Neath

What would a 500 kWp array produce in Neath?: Yes, and the number matters more than the sunshine. At 881 kWh per kWp a year, a 500 kWp array on a Neath roof models at around 441,000 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 Neath?: Applications go to National Grid Electricity Distribution, who run the network across Swansea. They decide the export limit, and we handle the G99 paperwork alongside the array design.
What does Neath Port Talbot 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 Neath Port Talbot before the design is finalised.

Nearby

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