How much does a farm roof near Daventry generate?

The model gives 890 kWh for every kWp installed here, so 500 kWp comes out at about 445,000 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 Daventry take the export?

National Grid Electricity Distribution is the distribution network operator for Northamptonshire. 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 Daventry?

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 West Northamptonshire before design sign-off.

Has anyone near NN11 already done this?

The planning database records 5 ground mounted and 1 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 Daventry

The case for solar on a Daventry 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.

890 kWh per kWp a year at this latitude, so a 500 kWp array models at about 445,000 kWh. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.

Book a roof survey in Daventry

Drawing Daventry unit

Roof 96 x 62 m

Array 500 kWp

Yield 445,000 kWh/yr

Scale 1:500 / Rev A / NN11

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

Daventry / Northamptonshire

Midlands arable farmland with solar on farm building roofs — Industrial stock of the kind we survey across East Midlands.

Solar for agricultural buildings across Northamptonshire

What a farm roof near Daventry generates

Modelled irradiation at this latitude is 1137 kWh per square metre a year in the plane of a shallow-pitched roof, which works out at 890 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.

The planning record lists 5 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 1 MW, with the largest at 12 MW. Source: Renewable Energy Planning Database, Q1 2026.

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 Daventry is higher than the record shows.

Surveys run across NN postcodes, NN11 outward.

West Northamptonshire 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 Daventry roof makes, month by month

Jul produces 6.2 times what Dec does on the same roof. A 500 kWp array here models at about 445,000 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	24	12,000
Feb	38	19,000
Mar	73	36,500
Apr	103	51,500
May	119	59,500
Jun	122	61,000
Jul	124	62,000
Aug	105	52,500
Sep	82	41,000
Oct	51	25,500
Nov	29	14,500
Dec	20	10,000

Source: EU PVGIS v5.2

FIG. 2 Daventry against the rest of Northamptonshire

Rushden900
Towcester897
Wellingborough896
Kettering895
Northampton893
Corby892
Daventry890

Daventry ranks 7 of 7 towns we cover in Northamptonshire on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 890 to 900, a spread of 10 kWh per kWp. Within Northamptonshire 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 National Grid Electricity Distribution

National Grid Electricity Distribution 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 Northamptonshire the planning database records 133 solar schemes totalling 1932 MW, of which 25 are operational (REPD Q1 2026).

Solar already consented near NN11

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
Ford Motor Company Limited - Solar Farm	Onsite Energy Projects Limited	1 MW	Ground	Awaiting Construction
Royal Oak Way South - Solar Array	Cummins Limited	1.66 MW	Ground	Operational
Fawsley Estate, Fawsley - Solar Arrays	Elgin Energy EsCo	12 MW	Ground	Awaiting Construction
Danetre and Southbrook Learning Village, Hawke Road - Solar PV Panels	E-Act	0.18 MW	Ground	Awaiting Construction
School House, Ashby Road - Solar PV Panels	E-ACT	0.21 MW	Roof	Awaiting Construction
Priors Marston Road, Hellidon - Solar Panels	Interesting Hotels Limited	0.32 MW	Ground	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 Daventry

How much does a farm roof near Daventry generate?: The model gives 890 kWh for every kWp installed here, so 500 kWp comes out at about 445,000 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 Daventry take the export?: National Grid Electricity Distribution is the distribution network operator for Northamptonshire. 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 Daventry?: 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 West Northamptonshire before design sign-off.
Has anyone near NN11 already done this?: The planning database records 5 ground mounted and 1 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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