Cooperation and investment and financing in renewable energy are one of the important elements of China’s cooperation with countries along the Belt and Road to move forward the initiative in a green and sustainable manner. Although there are differences in the development of renewable energy in countries along the Belt and Road, as well as in the cooperation and investment and financing of renewable energy between China and those countries, there are also certain commonalities. This report selects 22 countries that are typical of each region along the Belt and Road, and analyzes the development of renewable energy in these typical countries, as well as cooperation and relevant investment and financing between them and China. It provides typical cases and experiences on renewable energy cooperation as well as investment and financing between China and countries and regions along the Belt and Road.