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Greenhouse Gas Measurement and Management


Many cities also purchase energy such as electricity, heat and steam. 11 cities report the percentage of their budget that goes towards purchasing energy: for roughly half, electricity purchases represent less than 1 percent of municipal budgets, indicating that energy procurement is not a significant cost factor for large cities. Although for some cities, the budgetary impact is more substantial: New Orleans, for instance, estimates that 10 percent of its budget goes towards energy procurement. As with fuel consumption, energy purchases depend on the level and scope of services provided by a municipal government.


Emissions reporting is mostly voluntary for city government operations emissions 10 cities report that they comply with national reporting requirements or report via voluntary national registries, often as part of the national government’s commitment to report to the United Nations. 7 cities report that they undertake international reporting for city government operations emissions (e.g. through ICLEI or the EU Covenant of Mayors), while 7 cities do no reporting.


Fig. 14: Sources of emissions included in city government operations greenhouse gas inventory (% of respondents)


Buildings Municipal vehicle fleet


Street lighting and traffic signals Buses


Electricity generation Wastewater treatment Waste collection Landfills


Electricity transmission and distribution


Water supply Local trains


Subway / underground Roads / highways Airport(s)


Regional trains Thermal energy Employee commuting Maritime port


0 Number of responding cities (28) 18%


14% 14% 4%


20 40 60 80 100 29% 29% 25% 25% 39% 39% 68%


57% 57% 57%


54% 50% 79% 93%


17 © 2011 Carbon Disclosure Project


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