Rooftop solar and high-bay lighting for a logistics parkRooftopsolarandhigh-baylightingforalogisticspark

An earlier proposal from another supplier had sized the array on available roof area alone, which would have generated far more than the site consumed in daylight — exporting at a tariff well below the displaced import rate.

The existing high-bay lighting had been designed to a horizontal floor lux figure, and picking accuracy suffered in tall aisles where the vertical light on the rack face was less than half the floor reading.

Two of the four roofs were single-ply membrane still inside their waterproofing warranty.

We analysed a year of half-hourly consumption against the net-metering regime and sized the array at 2.4 MWp rather than the 3.6 MWp the roof could hold — the smaller system has a materially better return because almost all its output displaces import.

Membrane roofs were fitted with ballasted, non-penetrative mounting to keep the waterproofing warranties intact, and string sizing was checked against the site's record minimum temperature.

Lighting was redesigned for vertical illuminance on the racking face and supplied from genuine, authorised-channel product, with the as-installed survey measured at pick height and issued as a report.