U.K. Prime Minster Boris Johnson is preparing to announce deeper carbon cuts this week as he aims to spur global momentum in the fight against climate change, three people familiar with the matter said. The government will adopt a target of cutting carbon emissions by 78% from 1990 levels by 2035, in line with the recommendations of the Committee on Climate Change, according to the people, who declined to be named talking about plans that aren’t yet public. The Financial Times reported the proposal first.

Johnson is aiming to show leadership on the matter as the U.K. prepares to host a round of United Nations climate talks in Glasgow in November. The move is significant because it builds on the U.K.’s already ambitious target announced just last year to cut emissions by 68% in the four decades through 2030 — the deepest cuts in greenhouse gas emissions in the Group of 20 nations. That goal remains in place.

The Path to Net Zero

U.K. emissions need to fall by 78% by 2035 to stay on track

Source: Climate Change Committee

Note: Data measured in million tons of carbon dioxide equivalent

The targets are due to be announced during the week of a major climate summit being held at the White House, in which President Joe Biden is seeking to convince other countries to step up their ambition on cutting emissions. Biden is also expected to announce his own target for the U.S. to cut greenhouse gases by at least 50% compared to 2005 levels.