The ‘ City of Gold ’ is also becoming the city of sustainable initiatives . Dubai has been investing heavily in sustainability operations , which include the city ’ s metro line , buses and tram systems . More than an equivalent US $ 27bn has been set aside over the years to enhance its electrified infrastructure to support the commercial hub .

From 2021 to March 2022 , the first e-bus pilot began , leveraging ABB overhead charging solutions to assess the feasibility of the technology .