Big Green: "HSBC estimated that $10 trillion in cumulative capital investments will be required globally between 2010 and 2020 to drive low-carbon energy alone"

Climate-Themed Bond Market Hits $174 Billion · Environmental Management & Energy News · Environmental Leader

The climate-themed bond market is dominated by $119 billion of transport bonds, nearly all of that for railway projects, followed by $29 billion of low-carbon energy bonds, HSBC said. The report also found that bonds linked to the expansion of wind and solar power account for two-thirds of the $29 billion in energy bonds.

...HSBC estimated that $10 trillion in cumulative capital investments will be required globally between 2010 and 2020 to drive low-carbon energy alone. Of that amount, $6 trillion could be required in terms of bank loans and bonds, assuming the historical 60:40 split between debt and equity is followed.