The feature was first tested in a six-month trial that began in March 2021. During the trial, two single-deck buses, each equipped with 1,000-watt solar panels, were used for bus service 15.
Singapore’s four contracted bus operators share a unified green livery on all their buses, and this is being progressively applied to older buses. But Go-Ahead Singapore’s buses are not just green in colour — they also sport green features.
These include “ultra-thin” solar panels on the roof of some buses, which are used to charge the buses’ batteries. “[This] effectively reduces the load on the alternator and, in turn, lowers the engine’s workload,” says Leonard Lee, managing director of Go-Ahead Singapore.
