FOR workers at Sembcorp Industries Ltd, grey herons are of particular concern during their construction and operation of the floating solar power plant (PLTS) on Tengeh Reservoir, Singapore. The Public Utilities Board National Water Agency (PUB) warned Sembcorp not to disturb the habitat of these birds with the operation of the PLTS. “Rather than being disturbed, the birds instead come here often to relieve themselves,” said Sembcorp&