This project aims to investigate how FinTech lending companies can use customers' environmental information to access their creditworthiness, and whether lending decisions based on environmental information can promote pro-environmental behavior and expedite the societal transformation towards a low-carbon economy. These aims will be achieved through a quantitative analysis that evaluates the use of a customer's "carbon footprint" for predicting default risk, and a field experiment that analyses the economic and environmental benefits of the proposal. The project intends to develop a new approach that contributes to developing a sustainable lending platform for Fintech firms and establishing sustainable FinTech standards for policymakers.