India Infrastructure Finance Company Limited (IIFCL) is planning to raise Rs 20 billion through its maiden green bonds in the next six months to fund sustainable projects. This could be a mix of both domestic and foreign issuances, depending on the cost of funds. Further, the firm is exploring options of yen-denominated green bonds. However, it depends on the cost-effectiveness of the bonds, including the hedging cost and the overall cost of borrowings.