• Blog post

    The experts at C40-CCI work with cities around the world to develop the innovative projects and programs that are driving action on climate change. The following post from December 5, 2011 highlights the work of C40-CCI's waste management director Karen Luken, which was featured in Grist.

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  • Blog post

  • Case study

    In June 2004, King County launched a two-year project to test whether it could generate 1 MW of electricity from a fuel cell power plant powered by digester gas—a byproduct of anaerobic digestion of wastewater solids. The project, located at the 80-acre South Wastewater Treatment Plant southeast of Seattle, was the first commercial megawatt-scale project of its kind. In addition to generating electricity without combustion and the resultant air pollution, the high-temperature (molten carbonate) direct fuel cell unit also delivered a useful heat byproduct.

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  • Case study

    Gothenburg’s system of incinerating waste to make electricity and heat is highly efficient. Benchmarked against other European countries, the system compares very favorably, generating 3.3 MWh per ton of waste for heating (27% of the city) and electricity, reducing landfill to a small fraction of the total waste collected, and cutting emissions by over 200,000 tCO2 annually. By generating energy from waste, 25% of the City’s CO2 emissions from energy consumption have been cut.

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  • Case study

    Tokyo’s final waste disposal has decreased about 60% over the past 10 years thanks to efforts by citizens and businesses, etc., while TMG has aggressively implemented pioneering policies ahead of national initiatives to address the global environmental issues that are threatening our survival, to create a low-carbon urban city. However, the climate change crisis and resource constraints are posing great challenges on a global scale. The Panel discussed the desirable future direction of policies and measures pertaining to the sustainable use of resources from a global perspective, aiming to create a sustainable society.

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