Debt capital market bankers are well on their way to another bumper year for green bonds after French power company EDF sold the largest dollar-denominated green bond ever from a corporate issuer.

On October 7, EDF issued a $4.75 billion dollar bond across five tranches with maturities ranging from five to 40 years. A 10-year tranche, raising $1.25 billion, was a green bond, meaning the proceeds will be used to finance the company's renewable energy projects.