As the global financial sector is currently experiencing a transformation to the side of the planet, namely towards sustainable and environmentally friendly areas, it is moving to a more sustainable and ecologically friendly direction. As one of the critical factors of this process, green finance is viewed as a crucial factor in the banking sector. Their main instruments have become, among other things, they have become the key drivers. Green finance investments and financial products are those that make a positive contribution to environmental sustainability, thus inducing a decrease in pollution and a fostered environmental theme. This paper presents the issue of green finance in the bank, detailing its results, potential, and difficulties. We will look at the ways in which green finance projects have been adopted in the financial sector as well as the importance of SD in this case. The study further considers the position of banking institutions in advancing the green economy by regulation, investment strategies, and emerging trends. Also, we will be exploring the obstacles connected to such a transformation, which include such difficulties as the complexity of measuring environmental impacts and the necessity to produce real green innovations. Finally, the paper with the benefits of green finance for financial institutions, the environment, and the society will be studied which may unlock the way for the future of the industry and a prospect to make benefits in a long-term perspective.