Inflation Reduction Act (IRA), the first climate bill by U.S. federal government, will bring fundamental changes to American energy sector in terms of speeding up the penetration of low carbon technologies and clean power generation. Mr. Noah Lerner, who have gained working experience on energy decarbonization from private, non-profit and government sectors, discusses the opportunities facing climate friendly technologies investment in the U.S. as well as IRA’s implications in the international climate negotiation and actions.