Sustainability-linked bond
A bond whose coupon moves with the issuer's achievement of environmental targets, with no earmarking of proceeds to any particular project.
Enel, September 2019: the Italian utility places the first sustainability-linked bond in the public market, indexed to its renewable generation capacity, with a coupon step-up if the target is missed. The idea fits on one line. Proceeds fund the issuer's general activity, with no earmarking to projects, and the coupon depends on environmental performance measured at a set date. The instrument suits companies whose footprint cannot be carved into projects, as a green bond requires. The promise covers the trajectory of the whole company rather than a line of spending. The investor, life insurers included, checks the ambition of the target against a business-as-usual path, the relevance of the KPI to the real footprint, and the size of the step-up, which has to bite on an industrial decision. The standard criticism is soft calibration: a target the issuer would hit without changing anything turns the bond into ordinary funding at a discount. In 2023 Enel announced it had missed one of its interim targets, and the step-up kicked in on several tranches. That at least shows the mechanism bites.
The Italian utility Enel issued in September 2019 the first sustainability-linked bond placed in the public market, indexed to its renewable generation capacity, with a coupon step-up if the target was missed. In 2023 the company announced it had missed one of its interim targets, which triggered the step-up on several tranches.
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