How much does a farm roof near Weymouth generate?

The model gives 1006 kWh for every kWp installed here, so 500 kWp comes out at about 503,000 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 Weymouth take the export?

Scottish and Southern Electricity Networks is the distribution network operator for Dorset. 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 Weymouth?

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 Dorset before design sign-off.

Has anyone near DT3 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.

Solar panels for farms in Weymouth

Farm buildings around Weymouth carry broad, shallow roofs that were put up for storage and stock, not for generation. 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.

1006 kWh per kWp a year at this latitude, so a 500 kWp array models at about 503,000 kWh. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.

Book a roof survey in Weymouth

Drawing Weymouth unit

Roof 96 x 62 m

Array 500 kWp

Yield 503,000 kWh/yr

Scale 1:500 / Rev A / DT3

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

Weymouth / Dorset

South West pasture and farm buildings carrying rooftop solar — Industrial stock of the kind we survey across South West.

Farm building solar PV across Dorset

What a farm roof near Weymouth generates

Modelled irradiation at this latitude is 1289 kWh per square metre a year in the plane of a shallow-pitched roof, which works out at 1006 kWh for every kWp installed (EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss). That is around 14 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 5 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 Weymouth is higher than the record shows.

We survey holdings across the DT postcode area, starting from DT3.

Dorset 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 Weymouth 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 503,000 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	27	13,500
Feb	43	21,500
Mar	81	40,500
Apr	117	58,500
May	136	68,000
Jun	139	69,500
Jul	142	71,000
Aug	119	59,500
Sep	91	45,500
Oct	54	27,000
Nov	33	16,500
Dec	23	11,500

Source: EU PVGIS v5.2

FIG. 2 Weymouth against the rest of Dorset

Weymouth1006
Dorchester985
Christchurch981
Bournemouth971
Bridport971
Poole965
Wimborne964
Sherborne924

Weymouth ranks 1 of 8 towns we cover in Dorset on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 924 to 1006, a spread of 82 kWh per kWp. On a 500 kWp array that is about 41,000 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

Solar already consented near DT3

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
NOTTINGTON LANE SOLAR FARM	PS Renewables	5 MW	Ground	Operational
Land at Newlands Farm	British Solar Renewables	5 MW	Ground	Operational
Chickerell Road, Chickerell - Solar Photovoltaics (PV) Equipment	Dorset Council - Assets and Property	n/a	Roof	Operational
Morrisons Supermarket, Dorchester Road - Solar Panels	Morrisons	0.38 MW	Roof	Awaiting Construction
Seaview Holiday Park,Preston Road- Solar Photovoltaics Panels	Bourne Leisure Limited	0.2 MW	Roof	Awaiting Construction
Waterside Holiday Park, Bowleaze Coveway - Solar Arrays	Waterside Holiday Group Ltd	n/a	Ground	Application Submitted

Grid connection through Scottish and Southern Electricity Networks

Scottish and Southern Electricity 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 Dorset the planning database records 149 solar schemes totalling 1078 MW, of which 47 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 Weymouth

How much does a farm roof near Weymouth generate?: The model gives 1006 kWh for every kWp installed here, so 500 kWp comes out at about 503,000 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 Weymouth take the export?: Scottish and Southern Electricity Networks is the distribution network operator for Dorset. 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 Weymouth?: 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 Dorset before design sign-off.
Has anyone near DT3 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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