What is the expected reduction in GHGs from 2005 levels by 2030 in the US?

The expected reduction in greenhouse gas (GHG) emissions from 2005 levels by 2030 in the US is aligned with scientific assessments and policy goals aimed at combating climate change. A 40% reduction reflects the ambitious targets that have been set by governmental bodies including pledges made in international agreements, such as the Paris Agreement. This goal is driven by the urgent need to limit global warming and address climate impacts effectively.

This 40% target is strategically significant, as it represents a meaningful step towards achieving net-zero emissions by around mid-century, which is a critical benchmark to avert the worst impacts of climate change. Achieving this reduction involves a combination of initiatives, such as increasing the use of renewable energy, improving energy efficiency, and implementing stricter emission regulations across various sectors.

The other options, while they may represent lower thresholds of ambition, do not capture the level of commitment reflected in current national policies and international responsibilities aiming at deeper decarbonization efforts over the next decade.