The tangible benefits of greening existing cities are as follows:

• 10-12% reduction in power demand due to higher share of solar thermal, solar photovoltaic and wind energy
• 25-30% reduction in the lighting consumption of the city
• 15-20% reduction in water consumption due to better metering and monitoring
• Increased segregation in municipal waste leading to better handling
• Increase in use of public transport to the extent of 8-10%
• 8-10% increase in use of treated wastewater for city application