With 45 years to go, how sustainable is India’s road to net-zero? | Explained

Every year, climate action draws significant attention in the months leading up to the United Nations’ annual meeting of the Conference of the Parties (COPs).

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But the outcome of the 2024 U.S. presidential election will likely have a greater impact on the planet's climate future than COP29 itself, illustrating an important challenge in combating climate change: operationalising global cooperation towards a common cause even when national interests don’t align with it.For example, an economically developed country with sufficient resources per capita may not find it necessary to change course — whereas a populous and developing country like India will. A few COPs ago, India committed to achieving net-zero carbon emissions by 2070. Since then, it has implemented several policies while others are in the works to support this transition. It is widely acknowledged that this journey will not be without challenges, especially financial ones. However, other resource constraints such as land or water availability also matter, limiting the choices available for a sustainable long-term pathway for India.

Why net-zero at all?With each passing day, climate change is becoming more evident. The scientific consensus is that to avoid devastating and irreversible consequences, the world must keep the global average annual surface temperature rise to within 1.5 °C above pre-industrial levels. The current increase is at least 1.1 °C over that in 1880.The Sixth Assessment Report of the U.N. Intergovernmental Panel on Climate Change estimated that from 2020, the remaining (cumulative) global carbon budget for a 50-67% chance of limiting temperature rise to 1.5 °C is 400-500 billion tonnes (Gt) of CO2. Currently, annual global emissions are around 40 GtCO2.This means net global emissions must drop drastically to stay within the carbon budget. Several countries have announced net-zero targets, but we also really need a sharp decline in total emissions.

Is net-zero equitable?