Insurer green financing for a supply chain under cap-and-trade regulation: a capped call contingent claim analysis

Xuelian Li, Tinghui Lu, Jyh-Horng Lin () and Ching-Hui Chang
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Xuelian Li: Southwestern University of Finance and Economics, Collaborative Innovation Center of Financial Security
Tinghui Lu: Southwestern University of Finance and Economics
Jyh-Horng Lin: Tamkang University
Ching-Hui Chang: Ming Chuan University

Palgrave Communications, 2024, vol. 11, issue 1, 1-12

Abstract: Abstract This paper introduces a contingent claim analysis to examine sustainable insurance practices. It investigates how life insurers participate in sustainable lending by financing borrowing firms committed to environmentally friendly practices for cleaner production. We establish a capped call option model, where the capped function explicitly considers credit risks associated with borrowing firms in a supply chain engaged in the cap-and-trade mechanism regulated by environmental policies. Our findings reveal that tightening the cap within the cap-and-trade system and reducing green loans can enhance insurer’s interest margins. Conversely, an escalation in the green input ratio across the supply chain may reduce these margins for the insurer. However, reducing low-margin insurance offerings could jeopardize the stability of insurance. The insurer faces financial challenges while supporting borrowing firms in their efforts toward carbon reduction and sustainable production. Notably, the substantial impact of climate change fueled by carbon emissions significantly influences the underwriting of life insurance policies related to human health. Policymakers need to navigate these intricacies to establish a careful balance between environmental objectives and the financial stability of sustainable insurance.

Date: 2024
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DOI: 10.1057/s41599-024-04033-x

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