The United States will overtake Saudi Arabia as the world’s leading oil producer by about 2017 and will become a net oil exporter by 2030, the International Energy Agency said Monday.

That increased oil production, combined with new American policies to improve energy efficiency, means that the United States will become “all but self-sufficient” in meeting its energy needs in about two decades — a “dramatic reversal of the trend” in most developed countries, a new report released by the agency says.

“The foundations of the global energy systems are shifting,” Fatih Birol, chief economist at the Paris-based organization, which produces the annual World Energy Outlook, said in an interview before the release. The agency, which advises industrialized nations on energy issues, had previously predicted that Saudi Arabia would be the leading producer until 2035.

The report also predicted that global energy demand would grow between 35 and 46 percent from 2010 to 2035, depending on whether policies that have been proposed are put in place. Most of that growth will come from China, India and the Middle East, where the consuming class is growing rapidly. The consequences are “potentially far-reaching” for global energy markets and trade, the report said.