Abstract
Regional banking systems play an essential role in sustainable development by financing environmentally and socially responsible projects. This article provides a comprehensive literature review and case studies of successful regional banks from various countries, including Triodos Bank (Netherlands), New Resource Bank (USA), and Sberbank (Russia). The analysis reveals that regional banks can contribute significantly to sustainable development by providing financing for renewable energy, organic food and farming, and social housing. Moreover, the study shows that regional banks can help to alleviate poverty and improve the standard of living for marginalized communities. The findings have important implications for policymakers, as regional banks can play a critical role in achieving the United Nations' Sustainable Development Goals. Furthermore, the study contributes to the literature on sustainable finance by providing empirical evidence on the role of regional banks in sustainable development.