The answer
Is roof area the main solar limit?
Warehouses may have large solar roofs, but the strongest plan also considers structural capacity, daytime electricity load, tall-space heating, loading-door losses and future vehicle charging. Roof size alone cannot select the system.
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Follow the way the warehouse operates
Map shift patterns, lighting, refrigeration or process loads and vehicle movements. A distribution centre with constant electrical demand can use solar differently from a storage shed with little daytime use. In tall spaces, heating the air near the roof may waste energy; occupied zones and loading doors need a separate comfort strategy.
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Check shared infrastructure
Roof condition, structure, fire strategy, grid import and export capacity, distribution-board space and downtime windows can each limit a proposal. If forklifts, EVs or heat pumps are planned, include them in the electrical model now. A phased scheme should preserve cable routes and connection capacity for later stages.
Where this guidance comes from
Check the original guidance.
These primary sources support the technical or scheme points above. Rules can change; follow the current source before making a commitment.
Apply this to your property
Make the roof and building work together.
A free commercial survey can connect energy use, roof readiness, heating zones and future loads into one site plan.