India: Gorai Landfill, Mumbai, Maharastra State, India
The Gorai Landfill, located outside Mumbai, is owned by the Municipal Corporation of Greater Mumbai (MCGM) and was operated as an open dump that served the city from 1972 until 2007. Currently, as part of a Clean Development Mechanism (CDM) project, MCGM has closed the site and installed a methane capture and destruction system. Closure and capping activities were performed by M/S United Phosphorus Limited, with consultation from IL&FS Ecosmart, who also is providing MCGM with assistance in commercializing Certified Emissions Reductions (CERs).
The Gorai Landfill has the potential to earn $5.2 million (USD) for carbon credits for captured gas. Although the landfill gas is currently flared, local officials plan to reuse it to generate electricity eventually. The municipal corporation of Mumbai signed an emission reduction purchase agreement with the Asian Development Bank for future delivery of carbon credits. The carbon credits are determined by the estimated reduction of emissions of greenhouse gases from the capped landfill. Methane and other greenhouse gases are the product of 35 years and 2.3 million tons of accumulated solid waste at the site. In addition to addressing the environmental problems related to the disposal of waste, the capture and reuse of gas at the Gorai Landfill provides a local source of energy as well as revenue from the carbon credits. The initial feasibility study for this project was funded by the U.S. Agency for International Development and the U.S. Environmental Protection Agency provided additional technical support to the municipality.
As of early 2010, the landfill final cap and cover had been completed and landfill gas utilization projects were being assessed, with onsite uses likely limited to leachate evaporation. The project is still under the registration phase of the CDM process and is recovering an average of 684 cubic meters per hour of biogas.
The project study estimates that the Gorai Landfill has the potential to reduce emissions by 2 million metric tons of carbon dioxide equivalent over the lifetime of the project. These reductions are assumed to come from flaring between 2009 and 2028.
- Project details
- Poster presentation from the 2010 Methane to Markets Partnership Expo
- Project contact: R.A. Rajeev, Additional Municipal Commissioner, Municipal Corporation of Greater Mumbai