Solar panels for warehouses in St Albans
Sheds around St Albans tend to have more roof than the business has any other use for. We start with the covering and the structure, because a roof with five years left in it changes the answer entirely.
901 kWh per kWp a year at this latitude, so a 500 kWp array models at about 451,000 kWh. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.
Book a roof survey in St AlbansIllustrative layout for a unit of this size. Your own figures come from the roof survey.
Distribution centre solar across Hertfordshire
What a roof in St Albans actually generates
Modelled irradiation at this latitude is 1154 kWh per square metre a year in the plane of a shallow-pitched roof, which works out at 901 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.
Distribution stock around St Albans clusters on M1 J6, M25 J21a and A414, which is where the large single-let roofs are.
We survey across the AL postcode area, starting from AL1.
St Albans is the planning authority for most sites here, and the built-up area holds a population of about 75,540, so the stock here runs to trade counters, light industrial terraces and the occasional larger shed (ONS Census 2021 built-up areas).
St Albans ranks 3 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.
Grid connection through UK Power Networks
UK Power Networks operates the distribution network across Hertfordshire, so the export application goes to them. Anything larger than 3.68 kW per phase falls under G99, which means an application before commissioning rather than a notification afterwards. A constrained network is not the end of a scheme. Capping export costs little when the building already absorbs most of what the roof produces.
Across Hertfordshire the planning database records 119 solar schemes totalling 844 MW, of which 12 are operational (REPD Q1 2026).
Solar already consented near AL1
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 |
|---|---|---|---|---|
| Samuel Ryder Academy - Solar panels | Scholars Education Trust | 0.2 MW | Roof | Application Withdrawn |
| Westminster Lodge Leisure Centre - Solar Panels | St Albans City & District Council | 0.18 MW | Roof | Application Submitted |
| The Maltings Shopping Centre - Solar Array | St Albans (Maltings 4) Limited | 0.33 MW | Roof | Awaiting Construction |
| St Albans Retail Park, Griffiths Way - Solar Panels | Natwest Trustee & Depository Services Limited | 0.79 MW | Roof | Awaiting Construction |
| Verulam School, Brampton Road - Solar Panels | Earthpoints Limited | 0.16 MW | Roof | Revised |
| Verulam School - Solar Panels | Earthpoints Limited | 0.17 MW | Roof | Awaiting Construction |
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 St Albans
- How much does a warehouse roof in St Albans generate?
- The model gives 901 kWh for every kWp installed here, so 500 kWp comes out at about 451,000 kWh a year before any shading losses. You need roughly 1,485 sqm of clear roof to fit it. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.
- Does the grid around St Albans have capacity?
- UK Power Networks is the distribution network operator for Hertfordshire. Anything above 3.68 kW per phase connects under G99, and the application sets the export limit. We submit it as part of the design.
- Is planning permission needed for panels on a St Albans unit?
- Usually permitted development covers it. We still put the question to St Albans before design sign-off, and we tell you early if a full application is needed rather than discovering it late.
- Has anyone near AL1 already done this?
- The planning database records 6 solar schemes in this postcode district, 6 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.