Business Ambition for 1.5ºC: a commitment for the climate


"A journey of a thousand miles starts with a single step." It is with this Chinese proverb that the “Business Ambition for 1.5°C” campaign invites leaders to take a bold step that could inspire others: signing a public letter with a commitment to limit global temperature rise to 1.5°C compared to pre-industrial levels.

What is Business Ambition for 1.5ºC?

The Business Ambition for 1.5ºC campaign is a call to action for business leaders to commit to setting science-based goals to reduce their companies' greenhouse gas emissions.

The campaign encourages companies to engage and fight global warming by reducing greenhouse gas emissions, especially carbon.

This call to action was presented by the United Nations Global Compact, linked to the United Nations (UN), which encourages companies to adopt corporate social responsibility and sustainability policies, and by the Science Based Targets (SBTi) initiative ). More than 570 companies around the world have already joined the Business Ambition for 1.5ºC.

Why 1.5ºC?

To contain climate catastrophes and avoid irreversible damage to the global population, the most current climate science, systematized in the IPCC Special Report, published in 2018, indicates that it is necessary to limit the temperature increase to up to 1.5ºC. The level is in line with the Paris Agreement (2015), a commitment signed between 196 nations to keep the increase in the Earth's temperature below 2°C.

How to join the Business Ambition for 1.5°C campaign?

To be part of the campaign, companies need to sign the Business Ambition for 1.5ºC commitment letter, becoming part of the Science Based Targets initiative (SBTi), which offers methods and tools for companies of different sizes to set science-based greenhouse gas (GHG) emission reduction targets.
Learn more about “How to set a carbon reduction target”.

Temperature ambition

Companies’ managers interested in being part of the Business Ambition campaign can choose one or both of the options below:

Option 1 - 1.5°C scientific targets: establish GHG emissions reduction targets in line with trajectories that limit global temperature rise to 1.5°C. These goals must be achieved in a minimum of 5 and a maximum of 15 years.
Option 2 - Net Zero emissions commitment: target to achieve net zero emissions by 2050 at the latest, in addition to internal emissions reduction targets (5 to 15 years).

Business Ambition and Net Zero: movements that go together

By signing the Business Ambition for 1.5ºC campaign commitment letter, companies commit to the Race to Zero movement, focused on making companies more sustainable by reducing carbon emissions by 2050.

In the Business Ambition for 1.5°C document, companies are encouraged to commit to zero net emissions targets with full scientific basis. Such goals must be transformed into consistent actions, which will have their progress monitored.