Divergent Climate Rankings Highlight Ethical Choices Behind India's Scores

India’s recent appearance near the bottom of the 2026 Environmental Performance Index (EPI) has reignited a long-standing debate over the fairness of global climate metrics for developing nations. The controversy mirrors a similar clash that unfolded in 2022 when the Climate Change Performance Index (CCPI) placed India among the top performers, prompting the Ministry of Environment, Forest and Climate Change to welcome the latter ranking while contesting the former. The stark contrast between the two indices stems from the underlying ethical frameworks they employ, rather than any simple methodological error. ## How the indices differ The EPI’s climate-change component focuses almost entirely on absolute greenhouse-gas emissions and projected future outputs. This perspective aligns with a strict interpretation of the “polluter-pays” principle, holding industrialising economies accountable for the total volume of gases they release, irrespective of developmental context. By contrast, the CCPI evaluates emissions on a per-person basis, reflecting a fairness-oriented view that each individual holds an equal claim to the limited atmospheric capacity. Consequently, affluent nations with high per-capita emissions are penalised in the CCPI, while countries with large total emissions but lower per-capita figures, such as India, fare better. A 2024 study published in *Climate Policy* illustrated the impact of swapping the EPI’s heavily weighted indicators for fairness-based alternatives. The modified index lifted many South Asian and Global South nations in the rankings, while pushing traditionally high-scoring affluent countries toward the bottom. The authors argue that this shift underscores how ethical premises, not data quality, drive divergent outcomes. ## Historical context of the fairness debate The split in methodological outlooks is not new. In the early 1990s, the World Resources Institute reported that developing countries bore a substantial share of global warming responsibility, a claim that was challenged by Indian scholars Anil Agarwal and Sunita Narain. They advocated for an equal division of the atmospheric commons, a stance that helped shape equity arguments leading up to the 1992 Rio Summit. The present-day contrast between the EPI’s absolute-emissions lens and the CCPI’s per-capita focus echoes that earlier dispute. ## Moving beyond single-index reliance Experts suggest that India-and other nations facing mixed signals-should consult multiple indices to obtain a fuller picture of climate performance. Thailand’s experience offers a tentative model: after establishing a sub-committee to scrutinise the EPI methodology and integrating its metrics into national planning, the country’s EPI climate rank improved markedly over several years. While the improvement cannot be solely attributed to this engagement, the case highlights the value of institutional response rather than outright dismissal of unfavorable rankings. ## Caution against metric-driven policy Relying on any single indicator as a policy target can distort the underlying reality it intends to measure, a phenomenon known as Goodhart’s law. Historical anecdotes, such as the French colonial reward for rat tails that led to tailless rats, illustrate how incentives can produce unintended consequences. Therefore, policymakers are urged to treat climate indices as tools for insight rather than definitive verdicts. In sum, the divergent outcomes of the EPI and CCPI reflect distinct ethical choices about how to allocate responsibility for a shared atmospheric resource. Recognising that both approaches rest on legitimate scientific and moral foundations can help India navigate the complex terrain of climate assessment, ensuring that policy actions address real environmental challenges without being derailed by the politics of ranking systems.