A 100,000 sqft warehouse (9,300 sqm gross roof) typically supports 500 kW – 1 MW solar PV. Roof area gives 6,500 sqm usable after deductions — capable of 1.1 MW at 6 sqm/kW. But optimum size depends on daytime baseload from HH meter data, not roof maximum.
Sizing methodology
For distribution centres (70-80% self-consumption typical): size at 100% of daytime baseload, typically 500-700 kW for 100,000 sqft. For 24/7 fulfilment or cold chain (85-94% self-consumption): can size at 110-130% of baseload, 700 kW – 1 MW. For shift-pattern operations (lower baseload): size conservatively at 80-100%, 400-600 kW.
See more
500 kW system economics: /500kw-warehouse-solar/. 1 MW system: /1mw-warehouse-solar/. Energy audit methodology: /guides/warehouse-energy-audit/.