In the index, four Indian cities viz., Bengaluru, Hyderabad, Delhi, and Mumbai, have been ranked among top 20 sustainable cities.
In it, 36 cities were ranked on the basis of Urbanisation pressure, carbon emissions, Climate risk, and government initiatives.
Index has been topped by Singapore.
It is followed by Sydney, Wellington, Perth, and Melbourne.
These are the top five green-rated cities in commercial real estate in Asia-Pacific region.
Among the Indian cities, Bengaluru was ranked first. While in the Asia-Pacific region, it has been ranked 14th.