Warehouse and industrial roofs can offer substantial space for solar PV, while many sites also have regular daytime electricity demand. That combination can make them strong candidates for commercial solar, but roof area alone does not establish feasibility or return.
Renew-Able Solutions assesses warehouse, workshop and industrial solar projects across Edinburgh, East Lothian and wider Central and East Scotland.
What makes an industrial site suitable for solar?
The first stage should bring energy, building and electrical information together. Important factors include:
- half-hourly demand and seasonal operating patterns;
- roof covering, age, condition and remaining life;
- structural capacity and wind-loading requirements;
- rooflights, vents, drainage and safe maintenance routes;
- incoming supply, switchgear and connection point;
- export capacity and network requirements;
- working-at-height, lifting and site-access constraints; and
- future loads such as EV fleets, process equipment or electrified heating.
Why half-hourly electricity data matters
Annual electricity use does not show when a site consumes power. Two buildings with the same annual demand can use very different proportions of solar generation on site.
Interval data helps the designer compare expected generation with working-day, weekend and seasonal loads. This informs array sizing, export assumptions and whether a battery deserves further investigation.
Roof condition and structural checks
Installing solar on a roof that is approaching major refurbishment can create avoidable future cost. The roof condition, warranty position and expected life should be reviewed at the outset.
Structural suitability also needs to be established for the proposed mounting arrangement and site exposure. Specialist structural input may be required, and the project scope should make responsibility for this clear.
Electrical infrastructure and grid connection
The existing distribution equipment, proposed connection point and cable routes need assessment. Many commercial systems require engagement with the local distribution network operator before installation, and larger or more complex systems may require a G99 application.
Grid capacity can influence installed capacity, export, protection requirements, programme and cost, so it should be considered during design rather than left until installation.
Operational planning for an active site
Commercial installation can involve scaffolding or edge protection, lifting operations, temporary exclusion zones, roof access and planned electrical shutdowns. On active industrial sites, these activities need to fit around vehicles, deliveries, production, staff and tenants.
The installation plan should define site responsibilities, access hours, welfare, isolation procedures and communication routes before work begins.
Commercial battery storage
A battery may help a site retain surplus solar generation for use later in the day or support another agreed operating strategy. Its value depends on the load profile, tariffs, export arrangements and electrical design. It should be modelled rather than included automatically.
What to send for an initial review
- site postcode and contact details;
- a recent electricity bill;
- 12 months of half-hourly consumption data where available;
- normal operating hours and shutdown periods;
- roof drawings, condition reports or photographs; and
- details of planned EV charging, heating or process loads.
Request a warehouse or industrial solar feasibility review.
Frequently asked questions
Can solar panels be installed on a flat warehouse roof?
Often, yes. The design must account for the roof construction, structural capacity, drainage, wind loading, rooflights, spacing, access and a suitable mounting system.
Will installation stop warehouse operations?
Not necessarily. Work can often be phased, although lifting, exclusion zones and electrical shutdowns need to be planned around the site’s activities.
Should the roof be replaced before solar is installed?
If major roof work is likely during the life of the solar system, completing it first may avoid the cost and disruption of removing and reinstalling panels. The decision should follow a roof-condition review.
