The City of Sydney has approved a raft of bold initiatives for shoring up the sustainability, adaptability and resilience of the city centre's built environment.

The trio of plans approved by City of Sydney councillors include the Energy Efficiency Master, Residential Apartments Sustainability Plan and the Climate Change Adaption Strategy. The Energy Efficiency Master Plan has the goal of slashing energy bills by as much as $600 million, with an outlay of $400 million that will…