Banks' Carbon Exposure Risk
An IIM Lucknow study covering 158 banks in 26 countries found that higher exposure to carbon‑intensive sectors is associated with greater credit risk and lower operational efficiency. (x.com). The study recommended greener lending practices and larger capital buffers for banks with heavy carbon exposure. (x.com)
Banks that lend more heavily to carbon-intensive industries can end up with riskier loan books and weaker day-to-day efficiency, according to new research from the Indian Institute of Management Lucknow. (sciencedirect.com) The study examined 158 banks in 26 countries and found that higher concentration in carbon-intensive sectors was linked to lower banking efficiency over time. It was published in the *Journal of International Financial Markets, Institutions and Money*, according to the authors and coverage of the paper on April 12, 2026. (sciencedirect.com) (economictimes.indiatimes.com) In plain terms, a bank’s “carbon exposure” here means how much of its lending is tied to high-emissions businesses such as fossil fuels and heavy manufacturing. The researchers said they measured that exposure by combining loan concentration with carbon-emissions data, rather than looking at sector labels alone. (economictimes.indiatimes.com) (millenniumpost.in) The mechanism is straightforward: when climate policy tightens or cleaner technologies displace older ones, carbon-heavy borrowers can become less reliable. The paper says that raises credit risk and pushes up the costs of monitoring troubled loans and recovering money when loans sour. (sciencedirect.com) (economictimes.indiatimes.com) The finding lands as bank supervisors have been folding climate risk into ordinary prudential oversight. The Basel Committee’s climate-risk principles say climate drivers can feed into traditional categories including credit, liquidity and operational risk. (bis.org) Central banks are also moving from long-range warnings to near-term stress analysis. The Network for Greening the Financial System published short-term climate scenarios on May 7, 2025, to help supervisors gauge how climate policy shocks and climate impacts could hit financial stability over the next few years. (ngfs.net) In Europe, the European Central Bank said on January 30, 2024 that it would focus its 2024-2025 work on green-transition risks, physical climate damage and nature-related risks. On January 16, 2026, it said that plan had been embedded into day-to-day supervision and policy work. (ecb.europa.eu 1) (ecb.europa.eu 2) The IIM Lucknow researchers said bigger capital buffers can soften the hit for banks that still carry heavier carbon exposure. They also argued that shifting lending toward lower-carbon activities is not only an environmental choice but a balance-sheet decision. (economictimes.indiatimes.com) (devdiscourse.com) That leaves banks with a practical question, not an abstract one: how much of today’s loan growth is tied to borrowers that could look weaker under tomorrow’s climate rules. The paper’s answer is that carbon concentration already shows up in risk and efficiency, long before a loan defaults. (sciencedirect.com)
