Many US companies, like American Airlines Group, General Motors and Microsoft, joined Microsoft co-founder Bill Gates Breakthrough Energy Program to boost clean energy. The initiative intends to promote technologies to reach the target of zero carbon radiations by 2050.

Its catalyst program aims to raise funds from governments, sponsors and companies to make capital investments to decrease the cost of clean technology. Bank of America Corp, ArcelorMittal SA, Boston Consulting Group and BlackRock Inc have also entered the program, Breakthrough Energy said.

American Airlines Group announced in a statement that it had invested $100 million. The program will focus on four essential areas: direct air capture, green hydrogen, long-duration energy storage and sustainable aviation fuel.