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Solar panels for warehouses in Bath

Sheds around Bath tend to have more roof than the business has any other use for. What decides a scheme here is the state of the covering and the load path, which is why the survey starts on the roof rather than in a spreadsheet.

904 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 Bath
96 m phase 1
Drawing Bath unit
Roof 96 x 62 m
Array 500 kWp
Yield 452,000 kWh/yr
Scale 1:500 / Rev A / BA1

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

Bath / Somerset
South West industrial estate on the edge of a market town, with rooftop solar
Industrial stock of the kind we survey across South West.

Distribution centre solar across Somerset

What a roof in Bath actually generates

Modelled irradiation at this latitude is 1156 kWh per square metre a year in the plane of a shallow-pitched roof, which works out at 904 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 towns we cover, so the case rests on your consumption pattern rather than on the weather.

We survey across the BA postcode area, starting from BA1.

Bath and North East Somerset is the planning authority for most sites here, and the built-up area holds a population of about 94,080, the size that tends to be served by mid-box last-mile units rather than national hubs (ONS Census 2021 built-up areas).

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

What a Bath 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: 74 kWh per kWpMarApr: 105 kWh per kWpAprMay: 122 kWh per kWpMayJun: 123 kWh per kWpJunJul: 126 kWh per kWpJul126 kWh Aug: 105 kWh per kWpAugSep: 82 kWh per kWpSepOct: 51 kWh per kWpOctNov: 30 kWh per kWpNovDec: 21 kWh per kWpDec

Jul produces 6.0 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
MonthkWh per kWp500 kWp array
Jan2512,500
Feb3919,500
Mar7437,000
Apr10552,500
May12261,000
Jun12361,500
Jul12663,000
Aug10552,500
Sep8241,000
Oct5125,500
Nov3015,000
Dec2110,500
Source: EU PVGIS v5.2
FIG. 2 Bath against the rest of Somerset
  • Weston-super-Mare934
  • Bridgwater931
  • Yeovil923
  • Glastonbury913
  • Taunton911
  • Bath904
  • Wells899
  • Frome894

Bath ranks 6 of 8 towns we cover in Somerset on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 894 to 934, a spread of 40 kWh per kWp. Within Somerset 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

Connections around Bath are handled by National Grid Electricity Distribution, 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 warehouse uses most of what the roof makes during the working day.

Across Somerset the planning database records 223 solar schemes totalling 1574 MW, of which 79 are operational (REPD Q1 2026).

Solar already consented near BA1

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
Royal United Hospital, Combe Park - Solar Panels Royal United Hospital NHS Trust 0.31 MW Roof Awaiting Construction
LiveWest Homes - Solar Panels LiveWest Homes n/a Roof Application Submitted
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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.

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Questions about solar in Bath

What would a 500 kWp array produce in Bath?
Yes, and the number matters more than the sunshine. At 904 kWh per kWp a year, a 500 kWp array on a Bath roof models at around 452,000 kWh. What changes the answer is how much of that you use on site rather than export. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.
Which network operator handles the connection in Bath?
Applications go to National Grid Electricity Distribution, who run the network across Somerset. They decide the export limit, and we handle the G99 paperwork alongside the array design.
What does Bath and North East Somerset require for rooftop solar?
Roof-mounted panels on a commercial building usually fall under permitted development, subject to the limits on projection above the roof plane and to the building not being listed or in a conservation area. We confirm the position with Bath and North East Somerset before the design is finalised.
Has anyone near BA1 already done this?
The planning database records 2 solar schemes in this postcode district, 2 of them roof mounted. That matters less as proof that it works and more as evidence of how the local network has been treating export applications. Source: Renewable Energy Planning Database, Q1 2026.

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