Sustainable finance and investments have become crucial focal points in the financial sector, necessitating comprehensive examination and understanding. This article aims to provide high level exploration of the principles, tools, and effectiveness assessment in sustainable finance and investments. It delves into the theoretical foundations, characteristics, and analysis of theoretical concepts, along with the role of non-financial factors in sustainable financing and investments. The article also analyzes the effectiveness, specifics, and international experience in sustainable finance and investing. The focus extends to the sustainable financial and investment market, exploring the formulation of tools, their categories, and the methodologies employed in sustainable financing and investments. The influence of various factors on the development of sustainable finance and investments is studied, as well as the factors shaping the effectiveness of the sustainable financial and investment market. Methodological support for assessing the effectiveness of sustainable financing and investments is discussed, encompassing the principles of assessment, methodology development, and the role of financial modeling in the field. The chapter also addresses risk identification and classification, offering practical examples in the context of sustainable financing and investments. By synthesizing existing literature and research, this article provides a comprehensive overview of sustainable finance and investments, shedding light on theoretical foundations, market formulation, and methodological approaches. The findings contribute to a deeper understanding of the principles, tools, and effectiveness assessment in sustainable finance and investments, guiding future research and informing policy and practice in this dynamic and evolving field