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Solar panels for farms in Bishop's Stortford

The case for solar on a Bishop's Stortford holding turns on how much of the output the farm uses itself, not on how much the roof makes. The survey starts on the covering: fibre cement or steel, its remaining life, the purlin spacing and what the frame will carry.

911 kWh per kWp a year at this latitude, so a 500 kWp array models at about 456,000 kWh. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.

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96 m phase 1
Drawing Bishop's Stortford unit
Roof 96 x 62 m
Array 500 kWp
Yield 456,000 kWh/yr
Scale 1:500 / Rev A / CM23

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

Bishop's Stortford / Hertfordshire
Eastern arable farmland with solar arrays on farm buildings
Industrial stock of the kind we survey across East of England.

Solar for agricultural buildings across Hertfordshire

What a farm roof near Bishop's Stortford generates

Modelled irradiation at this latitude is 1167 kWh per square metre a year in the plane of a shallow-pitched roof, which works out at 911 kWh for every kWp installed (EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss). That is around 3 percent above the mean across the areas we cover, which is as strong as UK farm rooftop gets outside the south coast.

The planning record lists 3 ground mounted solar schemes in this postcode district, which is a fair guide to how the local network has treated field arrays. The typical consented scheme in this district is about 42.5 MW, with the largest at 49.9 MW. Source: Renewable Energy Planning Database, Q1 2026.

3 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 Bishop's Stortford is higher than the record shows.

Surveys run across CM postcodes, CM23 outward.

Uttlesford 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 Bishop's Stortford roof makes, month by month

What a Bishop's Stortford 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: 38 kWh per kWpFebMar: 74 kWh per kWpMarApr: 106 kWh per kWpAprMay: 121 kWh per kWpMayJun: 126 kWh per kWpJun126 kWh Jul: 126 kWh per kWpJulAug: 107 kWh per kWpAugSep: 85 kWh per kWpSepOct: 52 kWh per kWpOctNov: 31 kWh per kWpNovDec: 21 kWh per kWpDec

Jun produces 6.0 times what Dec does on the same roof. A 500 kWp array here models at about 456,000 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
Feb3819,000
Mar7437,000
Apr10653,000
May12160,500
Jun12663,000
Jul12663,000
Aug10753,500
Sep8542,500
Oct5226,000
Nov3115,500
Dec2110,500
Source: EU PVGIS v5.2
FIG. 2 Bishop's Stortford against the rest of Hertfordshire
  • Bishop's Stortford911
  • Stevenage901
  • St Albans901
  • Hatfield901
  • Hertford901
  • Welwyn Garden City899
  • Watford898
  • Harpenden896
  • Hemel Hempstead895

Bishop's Stortford ranks 1 of 10 towns we cover in Hertfordshire on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 895 to 911, a spread of 16 kWh per kWp. Within Hertfordshire 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 CM23

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
Wickham Hall Estate Solar Photovoltaic Farm Endurance Energy Wickham Hall Limited 35 MW Ground Awaiting Construction
Maggots End Road, Berden - Solar Farm & Battery Storage Low Carbon Limited 49.9 MW Ground Revised
Wickham Hall Estate Solar Photovoltaic Farm Endurance Energy Wickham Hall Limited n/a Ground Revised
Haslemere Industrial Estate, Pig Lane - Solar Panels Stagecoach Group Plc 0.3 MW Roof Application Refused
Hockerill Anglo European College, Dunmow Road - Solar panels Solar Options for Schools Limited 0.29 MW Roof Application Submitted
Hockerill Anglo European College, Dunmow Road - Solar panels Solar Options for Schools Limited 0.29 MW Roof Awaiting Construction

Grid connection through UK Power Networks

UK Power Networks is the network operator here, and their answer on export capacity shapes the design. Any commercial array above 3.68 kW per phase connects under G99 rather than G98, and the application fixes what you are allowed to push back onto the network. If the local network is tight, limiting export rarely breaks the case here: most of the generation is consumed on site while the building is working.

Across Hertfordshire the planning database records 119 solar schemes totalling 844 MW, of which 12 are operational (REPD Q1 2026).

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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 Bishop's Stortford

Is there enough sun around Bishop's Stortford to make this work?
Modelled at 911 kWh per kWp a year for a shallow-pitched roof at this latitude, which puts a 500 kWp array at roughly 456,000 kWh a year before shading. That array needs about 1,485 sqm of clear roof once ridge vents and walkways are allowed for. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.
Who do we apply to for export near Bishop's Stortford?
Only UK Power Networks can answer it for your connection, and on rural feeders the answer varies farm to farm. An export-limited offer usually still works, because a holding with grain drying, cooling or ventilation uses most of what it makes.
Do we need planning permission in Uttlesford?
In most cases no, because panels on the roof of an agricultural building usually sit within permitted development. The exceptions are listed buildings, conservation areas, protected landscapes and arrays that stand proud of the roof. We check with Uttlesford either way.
Has anyone near CM23 already done this?
The planning database records 3 ground mounted and 3 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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