With the immediate end to spending on new upstream projects and an expected shutting-in of higher-cost production, global oil supplies would shrink by more than 8% each year, the IEA estimates under its Net-Zero Emissions by 2050 Scenario or NZE. Oil demand will never again reach its historic peak in 2019 before shrinking to 24 million b/d in 2050, from around 90 million b/d in 2020, the IEA's scenario showed. Gas demand would also decline by 55% over 2020 levels to 1,750 Bcm by 2050.