Category: ENVIRONMENT
Context: The energy sector contributed around 145 million tonnes (Mt) of methane emissions in 2024, with oil and gas facilities accounting for over 80 million tonnes, according to the International Energy Agency’s (IEA) Global Methane Tracker 2025.
Decoding the context: Methane is a greenhouse gas responsible for around 30 per cent of the rise in global temperatures since the Industrial Revolution. Its levels in atmosphere are growing faster than other greenhouse gases, with its concentration being two-and-a-half times higher than the preindustrial era.
Learning Corner:
- What is Methane (CH₄)?
- A potent greenhouse gas (GHG).
- Colorless, odorless, and highly flammable.
- Has a Global Warming Potential (GWP) 84–87 times greater than CO₂ over a 20-year period, and about 28–36 times over a 100-year period.
Sources of Methane Emissions
- Energy Sector (35% of Human-Related Emissions):
- Oil and Gas: Over 80 Mt in 2024, driven by leaks, venting, and flaring.
- Coal: Around 40 Mt, primarily from underground mines in China, the top emitter in this category.
- Abandoned Facilities: Abandoned coal mines and oil/gas wells emitted 8 Mt in 2024, making them the fourth-largest fossil fuel methane source globally.
- Bioenergy: 10 Mt, largely from incomplete combustion of traditional biomass (e.g., wood for cooking).
- Agriculture (40%): Enteric fermentation in livestock (e.g., cattle) and rice paddies (anaerobic decomposition) are major sources.
- Waste (20%): Landfills and wastewater treatment release methane via organic decomposition under anaerobic conditions.
- Natural Sources: Wetlands contribute significantly, but human activity amplifies emissions.
Environmental Impacts
- Climate Change: Methane’s high global warming potential accelerates near-term warming. Reducing emissions could avert 0.2°C of warming by 2050 (IPCC, 2024).
- Air Quality: Methane contributes to tropospheric ozone, a harmful pollutant causing 255,000 premature deaths annually (Global Methane Pledge, 2024).
India’s Methane Emissions Profile
- Contribution: India is the third-largest methane emitter globally (after China and the U.S.), with 30 Mt annually, of which 18 Mt comes from agriculture (enteric fermentation, paddy cultivation).
- Policy Stance: India has not signed the Global Methane Pledge (GMP), launched at COP26 (2021), which aims for a 30% reduction in methane emissions by 2030.
- India argues that CO2, with its longer lifespan (100-1000 years), should remain the focus, and methane cuts disproportionately burden developing nations reliant on agriculture.
Global Efforts and Initiatives
- Global Methane Pledge (GMP): 159 countries aim to cut methane emissions by 30% from 2020 levels by 2030. Benefits include preventing 255,000 premature deaths and 26 million tonnes of crop losses annually.
- UNEP’s IMEO: The International Methane Emissions Observatory (IMEO) provides data transparency via satellite monitoring.
Source : Down To Earth