The decarbonization rates of power grids differ significantly between the Stated Policies Scenario (STEPS) and the Announced Pledges Scenario (APS) due to the varying levels of policy ambition.
Key Differences
- Decarbonization Pace: The APS assumes a faster pace of decarbonization compared to the STEPS. By 2035, the APS leads to a more significant drop in grid emissions intensity, with well-to-tank emissions for vehicles decreasing by 75%, compared to 55% in the STEPS.
- Energy Mix and Policies: The APS is based on the assumption that all announced climate commitments, including Nationally Determined Contributions and long-term net-zero targets, are met in full. This results in a more ambitious energy transition with a higher share of renewables and a slight increase in nuclear energy. In contrast, the STEPS accounts for policies that are already implemented or in the process of being implemented, leading to a more conservative projection.
- Impact on Emissions: The APS scenario leads to a lower temperature increase of about 2.1°C by 2100, compared to 2.6°C in the STEPS. This indicates that the APS achieves more substantial emissions reductions than the STEPS.
In summary, the APS promotes faster and more ambitious grid decarbonization, leading to greater reductions in emissions intensity, while the STEPS reflects current policy implementation, resulting in slower decarbonization progress.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/how-do-grid-decarbonization-rates-differ-between-the-steps-and-aps/
