BofA Merrill Lynch has launched a new index to track the performance of debt instruments whose proceeds are specifically earmarked for climate change mitigation and adaptation, commonly known as green bonds.
The mechanism presently covers 51 bonds issued to 29 parties since 31 December 2010. But there is potential for many more to be added in the future, according to the bank's head of index research Phil Galdi.
"Currently, there are $31bn in qualifying green bonds in the index, but that may just be the tip of the iceberg," Galdi said.
The bonds have an average yield of 1.4pc and a mean effective duration of 5.39.
The scheme will include all historical green bonds and new securities which manage to keep the investment grade rating they were issued with for 18 consecutive months before reaching maturity, Merrill Lynch said.
The bank has also set a minimum threshold for the size of bonds the programme will contain for different currencies — the caps stand at $250mn, £100mn and €250mn, for US dollars, pounds sterling and euros, respectively.
Composition of the index will be reviewed on a monthly basis, the US firm said.
The issuance of green bonds has been increasing rapidly in recent years. Over $26.5bn of bonds has been released globally in 2014 so far, and German state-owned development bank KfW predicts a further $116bn will enter the market before the end of 2015.
The International Energy Agency (IEA) in June estimated that by 2035 developments in power generation must attract investment of $10.5 trillion and research into low-carbon, renewable technologies capitalisation in excess of $5.8 trillion for the world's future energy supply to remain sustainable.
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