GHG emission

SILIGURI GHG EMISSIONS INVENTORY 2015-16

The GHG Emission Inventory accounts for greenhouse gas emission from fossil fuels and electricity consumed in the city through various activities like stationary fuel combustion, electricity consumption, burning of firewood, coal and charcoal, and municipal solid waste degradation. The values of GHG emission are mentioned in terms of tonnes of CO2 equivalent (tCO2e). The present GHG inventory is prepared for the period 2011-12 to 2015-16 to analyse the overall trend of GHG emissions in city.

Siliguri is a rapidly developing metropolis in the Indian state of West Bengal. It is the commercial nerve centre of North Bengal, having a large number of trade centres and readymade markets for consumer goods which makes it the home to many retailers, wholesalers, dealers, distributors and small-scale entrepreneurs. As estimated in our study, the total GHG emissions from Siliguri was 1.03 million tCO2e in the year 2015-16. Taking this into consideration, the average per capita GHG emission for the year 2015-16 for Siliguri is 1.93 t CO2e, while India’s per capita GHG emission was 1.56 tCO2e for the year 2010.

The On-Road Transportation Sector has the maximum contribution of 44% to the total GHG emissions (in terms of tCO2e), followed by the Residential Sector’s contribution of 31%. The Commercial/Institutional, Municipal Waste, Manufacturing Industry and Construction, and Aviation Sectors contribute 14%, 6%, 3%, and 2% respectively to the overall GHG emissions at the Community level (Figure 1).

Figure 1: Sectorwise Share of GHG emission (tCO2e) in Siliguri, 2015-16

About 10.3 million GJ of energy is consumed by the different sectors of Siliguri in the year 2015-16. The On-road Transportation Sector consumes maximum amount of energy in Siliguri with its share amounting to 59% of total energy consumption, followed by the Residential Sector’s consumption of 29% of total energy in Siliguri, Commercial/Institutional Sector’s 10%, and Manufacturing Industry and Construction Sector’s consumption of 2% (Figure 2).

Figure 2: Sectorwise Share of Energy Consumption (GJ) in Siliguri, 2015-16

Diesel use accounts for 50% of energy consumption and correspondingly for 40% of GHG emissions in Siliguri in 2015-16. Electricity consumption accounts for 13% of energy use but correspondingly accounts for 32% of GHG emissions. Gasoline and LPG consumption accounts for 14% and 22% of energy use respectively, but accounts for 11% and 15% of GHG emissions respectively (Figure 3).

Figure 3: Consumption of Energy and GHG emissions by Type in Siliguri, 2015-16

With emissions amounting to 14,878 tCO2e, operations of Siliguri Municipal Corporation contribute to 1.5% of the city’s total GHG emission. Streetlights Service and Water Supply has been the largest contributor to municipal GHG emissions with a share of 44% each. Other sources of GHG emission from municipal operation include Transportation (10%), and Non-Residential Municipal Buildings (2%) (Figure 4). The total energy consumption through municipal operations amounts to 78,872 GJ of energy, which is 0.8% of the total energy used in Siliguri.

Figure 4: Government Sector-wise Share of GHG emission, 2015-16