Monday, June 25, 2012

Green Urban Investment Needs


Green Urban Investment Needs

Although it is almost impossible to calculate the future needs of greening urbanization, because of the wide variation of projects, cities and levels of urban decay and renewal which is needed for each one. Kennedy et al. (2009) has suggested that cities major areas of GHG are attributable to first, transportation and land use; second, buildings and the built environment; third, energy supply and emissions from electricity consumption; fourth, waste and municipal water services; and finally, from landfill waste. Therefore in order to gain zero waste, we calculate the estimate total of these projects for one city (taking into account previous expenditures). The below chart aims to capture the massive costs of an average mega city with the intention that these figures can be multiplied by the number of mega cities in order to derive the future global costs of green infrastructure.


Sample Mega City Capital Costs
($ million US)
Annual GHG Savings
(kt CO2e)
Estimated Costs of 15 Mega Cities in 2015
($ million US)
Annual GHG Savings
(kt CO2e)
Transportation/land use

Buildings/ Built Environment

Energy

Water/Wastewater

Solid Waste
797.5


5.5

523.8

528

18.4
614.2


1.4

1,442.5

14

415
11,962.5


82.5

7,857

7,920

276
9,213


21

21,637.5

210

6,225
Total
1,873.2
2,487.1
28,098
37,306.5
Source estimation calculations built from Kennedy et al (2009).




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