How much does a farm roof near Farnham generate?

The model gives 903 kWh for every kWp installed here, so 500 kWp comes out at about 452,000 kWh a year before shading losses. A building of roughly 1,485 sqm of clear roof carries it. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.

Will the rural network around Farnham take the export?

UK Power Networks is the distribution network operator for Surrey. Anything above 3.68 kW per phase connects under G99, and the application sets the export limit. Rural supplies are often the binding constraint, so we ask the question before an array is sized.

Is planning permission needed for panels on a farm building near Farnham?

Usually permitted development covers a roof array. Ground mounted arrays are a different question and are far more likely to need a full application. We put both to Waverley before design sign-off.

Has anyone near GU9 already done this?

The planning database records 0 ground mounted and 5 roof mounted solar schemes in this postcode district. That matters less as proof it works and more as evidence of how the local network has treated export applications. Roof arrays under a megawatt often never appear in the database, so the real figure is higher. Source: Renewable Energy Planning Database, Q1 2026.

Solar panels for farms in Farnham

The case for solar on a Farnham holding turns on how much of the output the farm uses itself, not on how much the roof makes. What decides a farm scheme here is the state of the roof sheets and the incoming supply, which is why the survey looks at both before anyone sizes an array.

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.

Book a roof survey in Farnham

Drawing Farnham unit

Roof 96 x 62 m

Array 500 kWp

Yield 452,000 kWh/yr

Scale 1:500 / Rev A / GU9

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

Farnham / Surrey

South East farmland with solar arrays on farm buildings — Industrial stock of the kind we survey across South East.

Agricultural rooftop solar across Surrey

What a farm roof near Farnham generates

Modelled irradiation at this latitude is 1158 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 areas we cover, so what decides the scheme is your own demand pattern rather than the latitude.

5 roof mounted schemes are on record nearby. Roof arrays under a megawatt frequently never reach that database at all, so the real number of farm roofs generating around Farnham is higher than the record shows.

Most of the buildings we look at here sit in the GU postcode area.

Waverley is the planning authority for most holdings here, and it is the authority that decides whether an array on an agricultural building falls inside permitted development.

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

Jul produces 5.7 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

Month	kWh per kWp	500 kWp array
Jan	25	12,500
Feb	38	19,000
Mar	73	36,500
Apr	105	52,500
May	120	60,000
Jun	124	62,000
Jul	126	63,000
Aug	106	53,000
Sep	82	41,000
Oct	51	25,500
Nov	30	15,000
Dec	22	11,000

Source: EU PVGIS v5.2

FIG. 2 Farnham against the rest of Surrey

Dorking916
Leatherhead910
Guildford908
Woking905
Weybridge905
Farnham903
Staines903
Camberley900
Epsom900

Farnham ranks 7 of 10 towns we cover in Surrey on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 900 to 916, a spread of 16 kWh per kWp. Within Surrey 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 UK Power Networks

UK Power Networks operates the distribution network across Surrey, 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.

Across Surrey the planning database records 74 solar schemes totalling 182 MW, of which 6 are operational (REPD Q1 2026).

Solar already consented near GU9

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
Kinetrol Manufacturing - Solar PV Panels	Kinetrol Limited	0.27 MW	Roof	Revised
Brightwells Road - Solar Panels	Crest Nicholson Operations Limited	0.33 MW	Roof	Awaiting Construction
Kinetrol Manufacturing,Farnham Trading Estate - Solar Panels	Kinetrol Limited	0.24 MW	Roof	Application Submitted
David Lloyd Leisure Club, Wilkinson Way - Solar PV Panels	David Lloyd Leisure Limited	0.33 MW	Roof	Awaiting Construction
University For The Creative Arts, Falkner Road - Solar PV Panels	University for the Creative Arts	0.57 MW	Roof	Awaiting Construction

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 Farnham

How much does a farm roof near Farnham generate?: The model gives 903 kWh for every kWp installed here, so 500 kWp comes out at about 452,000 kWh a year before shading losses. A building of roughly 1,485 sqm of clear roof carries it. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.
Will the rural network around Farnham take the export?: UK Power Networks is the distribution network operator for Surrey. Anything above 3.68 kW per phase connects under G99, and the application sets the export limit. Rural supplies are often the binding constraint, so we ask the question before an array is sized.
Is planning permission needed for panels on a farm building near Farnham?: Usually permitted development covers a roof array. Ground mounted arrays are a different question and are far more likely to need a full application. We put both to Waverley before design sign-off.
Has anyone near GU9 already done this?: The planning database records 0 ground mounted and 5 roof mounted solar schemes in this postcode district. That matters less as proof it works and more as evidence of how the local network has treated export applications. Roof arrays under a megawatt often never appear in the database, so the real figure is higher. Source: Renewable Energy Planning Database, Q1 2026.

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