Before the global financial crisis, which is known to be the worst financial crisis since the Great Depression in the 1930s, shocked the United States in 2007 and 2008, traditional banks were responsible for most of infrastructure debt financing.
After the crisis, however, new regulations limited the ability of banks to provide loans, paving the way for infrastructure debt funds to step in and fill the finance void left by banks whose lending was curtailed by new regulations and a depressed global economy.