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Solar panels for farms in Sevenoaks

The case for solar on a Sevenoaks 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.

920 kWh per kWp a year at this latitude, so a 500 kWp array models at about 460,000 kWh. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.

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96 m phase 1
Drawing Sevenoaks unit
Roof 96 x 62 m
Array 500 kWp
Yield 460,000 kWh/yr
Scale 1:500 / Rev A / TN13

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

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

Agricultural rooftop solar across Kent

What a farm roof near Sevenoaks generates

Modelled irradiation at this latitude is 1181 kWh per square metre a year in the plane of a shallow-pitched roof, which works out at 920 kWh for every kWp installed (EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss). That is around 4 percent above the mean across the areas we cover, which is as strong as UK farm rooftop gets outside the south coast.

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

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

Sevenoaks 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 Sevenoaks roof makes, month by month

What a Sevenoaks roof makes, month by month

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

050100Jan: 25 kWh per kWpJanFeb: 39 kWh per kWpFebMar: 73 kWh per kWpMarApr: 106 kWh per kWpAprMay: 123 kWh per kWpMayJun: 128 kWh per kWpJun128 kWh Jul: 128 kWh per kWpJulAug: 108 kWh per kWpAugSep: 85 kWh per kWpSepOct: 52 kWh per kWpOctNov: 32 kWh per kWpNovDec: 22 kWh per kWpDec

Jun produces 5.8 times what Dec does on the same roof. A 500 kWp array here models at about 460,000 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
Jan2512,500
Feb3919,500
Mar7336,500
Apr10653,000
May12361,500
Jun12864,000
Jul12864,000
Aug10854,000
Sep8542,500
Oct5226,000
Nov3216,000
Dec2211,000
Source: EU PVGIS v5.2
FIG. 2 Sevenoaks against the rest of Kent
  • Dover972
  • Canterbury961
  • Maidstone930
  • Tunbridge Wells930
  • Tonbridge927
  • Gravesend926
  • Chatham920
  • Sevenoaks920
  • Dartford915

Sevenoaks ranks 11 of 12 towns we cover in Kent on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 915 to 990, a spread of 75 kWh per kWp. On a 500 kWp array that is about 37,500 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 UK Power Networks

Connections around Sevenoaks are handled by UK Power 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 Kent the planning database records 237 solar schemes totalling 2072 MW, of which 45 are operational (REPD Q1 2026).

Solar already consented near TN13

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
The Sennocke Centre, High Street - Solar PV Systems Sevenoaks School 0.36 MW Roof Awaiting Construction
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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.

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Questions about solar in Sevenoaks

What would a 500 kWp array produce on a farm near Sevenoaks?
Yes, and the figure matters more than the sunshine. At 920 kWh per kWp a year, a 500 kWp array on a Sevenoaks holding models at around 460,000 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 Sevenoaks?
Applications go to UK Power Networks, who run the network across Kent. 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.
What does Sevenoaks require for solar on an agricultural building?
Roof-mounted panels on an agricultural building often fall under permitted development, subject to limits on projection above the roof plane and to the building not being listed or in a conservation area or National Park. We confirm the position with Sevenoaks before the design is finalised.

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