Nifty 100 ESG Index
The Nifty 100 ESG Index screens the Nifty 100 large-cap universe for environmental, social, and governance standards, excluding companies that fail minimum ESG thresholds or operate in controversial sectors.
Environmental, social, and governance investing arrived in India at a meaningful scale through the Nifty 100 ESG Index, which applies responsible-investing criteria to the country's one hundred largest listed companies by free-float market capitalisation. The index starts with the Nifty 100 parent and then applies a two-stage filter: first, absolute exclusions remove companies involved in tobacco, thermal coal beyond a defined revenue threshold, controversial weapons, and other sectors deemed incompatible with ESG principles; second, the remaining companies are scored by an independent ESG data provider, and those falling below a minimum ESG score percentile are further removed.
The surviving universe is weighted by free-float market cap, but each constituent's weight is adjusted upward or downward based on its normalised ESG score relative to its sector peers. Higher-scoring companies receive proportionally greater weight, creating an active ESG tilt without entirely abandoning the stability of market-cap weighting.
From an Indian market perspective, the methodology has practical implications. Energy-intensive sectors such as metals, cement, and oil and gas tend to receive lower environmental scores due to carbon intensity, while information technology and financial services companies often score well on governance metrics given their relatively transparent reporting. Investors comparing the Nifty 100 ESG Index with the plain Nifty 100 will notice differences in sector weights and individual stock weights, which drive relative return divergence over time.
SEBI has encouraged the mutual fund industry to launch ESG-themed products as part of its sustainable finance agenda. Asset management companies managing Nifty 100 ESG ETFs and index funds must adhere to SEBI's enhanced disclosure framework for ESG schemes, which requires transparency on the ESG scoring methodology, the data provider used, and engagement policies. Investors should note that ESG scores from different data providers can diverge significantly for the same company, so understanding which provider's methodology underpins an index is important for evaluating its alignment with personal sustainability preferences.