IPCC estimates an investment of 2.4 trillion dollars in energy systems for a low-carbon economy. It requires financial innovations and an understanding of its emergence and diffusion. Green bonds, a recent financial innovation, have been gaining attention – the roles of various stakeholders, self-reinforcing processes, and widespread acceptance have been vital factors for its growth and distribution. Assessing these parameters helps to better understand obstacles and factors that influence successful dispersion of other financial innovations.