GHG Emission Inventory accounts for greenhouse gas emission from fossil fuels and electricity consumed in city through various activities like stationary fuel combustion, electricity consumption, and municipal solid waste and sewage degradation. The values of GHG emission are mentioned in terms of tones of CO2 equivalent. The present GHG inventory is prepared for the period 2011-12 to 2015-16 to analyze the overall trend of GHG emissions in city.

Coimbatore is the second most important city in the Indian state of Tamil Nadu after Chennai. As estimated in study, the total GHG emissions from Coimbatore City were 4.89 million tonnes of carbon dioxide equivalent (CO2e) in the year 2015-16. Taking this into consideration, the average per capita GHG emission for the year 2015-16 for the Coimbatore city area is 3.03tonnes of CO2e, while India’s per capita GHG emission was 1.56 tCO2e for the year 2010 .

On-Road Transportation Sector has the maximum contribution of 43% to the total GHG emissions, followed by Manufacturing Industry and Construction Sector, which contributes to 32%. The residential, commercial and institutional and waste contribute 17%, 8% and 1 % respectively to the overall GHG emissions at the Community level (see figure-1).

Figure 1: Sector-wise Share of GHG emission in Coimbatore, 2015-16

About 49.1 Million GJ of energy is consumed by the city. Transport consumes maximum with its share amounting to 59%, followed by manufacturing industry and construction sector with a consumption of 24% of the total energy. This is followed by the residential sector consuming 13% and commercial/ institutional sector consuming 4%.

In terms of energy supply, grid electricity accounts for highest i.e. 40% of GHG emissions followed by diesel with 31%. Other sources i.e. Gasoline, Diesel Oil, LPG, Motor Gasoline and Kerosene result in 12%, 8%, 6%, 3% and 0.4% respectively. The GHG emission from electricity supply tends to be higher because of fossil fuel based electricity generation plants in India. The trend of electricity consumption in other sectors is also increasing. (see figure-2).

1. Population of Coimbatore city for year 2015-16 is 1617711 persons as per Census data information provided by CMC’s Health Section

2. India: First Biennial Update Report to the United Nations Framework Convention on Climate Change (2016),

Figure 2: Energy mix and GHG emissions by energy type Coimbatore, 2015-16

Operations of Coimbatore Municipal Corporation contribute to 1.5% of the city’s total GHG emission with total emissions amounting to 74,461 tonnes of CO2 equivalent. Streetlights service has been the largest contributor to municipal GHG emissions with a share of 51%. Other sources of GHG emission from municipal operation include transportation, water supply, municipal buildings (non-residential) and waste water treatment each contributing at 9%, 18%, 17% and 4% respectively. Total energy consumption through municipal operations amounts to 391,231 GJ of energy. (see figure-3).

Figure 3: Government Sector-wise Share of GHG emission, 2015-16