World’s largest single rooftop solar PV plant comes up in Punjab

L&T Construction has recently commissioned the world’s largest solar photovoltaic plant of 7.52 MWp capacity on a single roof in Amritsar, Punjab.
The energy generated from this plant is being fed to the local grid through a power purchase agreement (PPA) signed with the state distribution company under the New and Renewable Sources of Energy (NRSE) Policy.
For this project, L&T employed multi-crystalline module technology and central inverters to optimise efficiency. More than 30,000 panels were erected on the rooftop of the shed spread over 94,000 sq.m area.Since for this project, the rooftop modules had to be erected on fragile asbestos roof sheets, L&T’s project engineers designed and implemented an appropriate and customised balance of system. Without stressing the existing roof sheets, the entire load of the PV modules and BoS were transferred to the roof of the space frame members of the top and middle chords. Lightweight aluminium structures were used for mounting the modules and water proofing techniques were used to avoid leakages.

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