What would a 500 kWp array produce on a farm near Pwllheli?

Yes, and the figure matters more than the sunshine. At 887 kWh per kWp a year, a 500 kWp array on a Pwllheli holding models at around 444,000 kWh. What changes the answer is how much of that the farm uses itself. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.

Which network operator handles the connection around Pwllheli?

Applications go to SP Energy Networks, who run the network across Gwynedd. On a farm the incoming supply matters as much as their answer: a single phase supply caps what can be installed whatever the roof would take.

Solar panels for farms in Pwllheli

A Pwllheli farm buys electricity at the worst rate of the day in exactly the hours its roof could be generating. Each survey records the sheet type and condition, the usable area once rooflights and vents come out, and whether the supply is single or three phase.

887 kWh per kWp a year at this latitude, so a 500 kWp array models at about 444,000 kWh. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.

Book a roof survey in Pwllheli

Drawing Pwllheli unit

Roof 96 x 62 m

Array 500 kWp

Yield 444,000 kWh/yr

Scale 1:500 / Rev A / Gwynedd

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

Pwllheli / Gwynedd

A modern steel framed agricultural building with its roof covered in solar panels, tractor and trailer in the yard, fields beyond — Industrial stock of the kind we survey across Gwynedd.

Farm building solar PV across Gwynedd

What a farm roof near Pwllheli generates

Modelled irradiation at this latitude is 1120 kWh per square metre a year in the plane of a shallow-pitched roof, which works out at 887 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 areas we cover, so what decides the scheme is your own demand pattern rather than the latitude.

No solar scheme is recorded in this postcode district in the planning database. On a farm that usually means nothing has been built above the reporting threshold rather than that nothing has been built, because a roof array on a shed rarely appears in it.

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

Jun produces 8.2 times what Dec does on the same roof. A 500 kWp array here models at about 444,000 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	21	10,500
Feb	37	18,500
Mar	72	36,000
Apr	105	52,500
May	129	64,500
Jun	131	65,500
Jul	124	62,000
Aug	105	52,500
Sep	77	38,500
Oct	46	23,000
Nov	24	12,000
Dec	16	8,000

Source: EU PVGIS v5.2

FIG. 2 Pwllheli against the rest of Gwynedd

Pwllheli887
Porthmadog820
Caernarfon798
Dolgellau746
Bangor733
Bethesda704

Pwllheli ranks 1 of 6 towns we cover in Gwynedd on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 704 to 887, a spread of 183 kWh per kWp. On a 500 kWp array that is about 91,500 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

Grid connection through SP Energy Networks

Connections around Pwllheli are handled by SP Energy Networks, 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 farm uses most of what the roof makes during the working day.

Across Gwynedd the planning database records 19 solar schemes totalling 221 MW, of which 6 are operational (REPD Q1 2026).

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 Pwllheli

What would a 500 kWp array produce on a farm near Pwllheli?: Yes, and the figure matters more than the sunshine. At 887 kWh per kWp a year, a 500 kWp array on a Pwllheli holding models at around 444,000 kWh. What changes the answer is how much of that the farm uses itself. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.
Which network operator handles the connection around Pwllheli?: Applications go to SP Energy Networks, who run the network across Gwynedd. On a farm the incoming supply matters as much as their answer: a single phase supply caps what can be installed whatever the roof would take.