Once a company has measured its carbon footprint and has tools in place to track its GHG emissions, it can establish reduction targets over different time horizons. The Task Force on Climate-Related Financial Disclosures (TCFD), which will be mandatory across the UK economy by 2025, recommends disclosing the metrics used to assess climate-related risks, Scope 1 & 2 (and if appropriate Scope 3), and subsequent reduction targets [4].
Through the Science-Based Targets Initiative (SBTi), companies can commit to validated near-term targets (up to 5-10 years), and long-term targets (up to 2050) consistent with the trajectory to achieve net-zero and limiting global temperature rise to 1.5°C above pre-industrial levels.
The corporate journey to net-zero is outlined in the chart below.
Net-zero emissions reduction pathway

Source: Science Based Targets initiative, Corporate Net-Zero Standard [5]
Once a company has committed to set a SBTi target, it has 24 months to submit its targets for validation. Once validated, companies are required to publicly announce the targets and report company-wide emissions and progress on an annual basis [6]. As science has evolved, SBTi has updated its requirement and from 15 July 2022 will require companies setting new SBTs to align to 1.5°C (previously, targets could also be set to be aligned with well below 2.0°C or 2°C) [7].
Companies with targets approved in 2020 or earlier will have until 2025 to update these in line with 1.5°C. To ensure continuous alignment to the latest climate science, companies will need to review and update their SBTi aligned emission reduction targets at least every five years [8].
The SBTi also supports Small and Medium-sized Enterprises (which it defines as non-subsidiary, independent companies with less than 500 employees) to submit targets through a streamlined process. This process enables SMEs to set a science-based target for their Scope 1 and 2 emissions by choosing from one of several predefined target options.
For any company to achieve net-zero, it must first look to reduce absolute emissions as much as possible, however, companies may reach a point where emissions cannot be reduced further – sometimes referred to as ‘residual’ or ‘unabated’ emissions. In this case, carbon credits can be an option to offset the residual emissions. As noted in a previous article, a net-zero commitment requires a company to use carbon removal credits to offset any residual emissions. Removal credits support the funding of projects that remove CO2 from the atmosphere – for instance, through CO2 removal technologies or afforestation.