![]() A PCA scheme would entail all adults receiving an equal, tradable carbon allowance that reduces over time in line with national targets. This policy aims to link personal action with global carbon reduction goals. In this context, the introduction of personal carbon allowances (PCAs), a mitigation policy proposal developed in the 1990s 5, is ripe for revisitation. However, the government’s independent advisory climate body advises that policy steps taken so far “do not yet measure up to meet the size of the net-zero challenge“ 4. To take a national example, the United Kingdom has made strong progress in reducing carbon emissions, and was an early adopter of a net-zero by 2050 target. ![]() ![]() Thus, although many countries have made pledges of net-zero emissions by 2050, implemented policies and pledges are insufficient to deliver the Paris Agreement ambition of limiting global warming to well below 2 ☌ (ref. However, by May 2021, Climate Action Tracker 2 estimated that climate policies implemented across the world at present, including the effect of the pandemic, will lead to a temperature rise of 2.9 ☌ by the end of the century. The development of a just and equitable transition to a net-zero society is vital to avoiding the worst impacts of climate change 1. Climate change could undermine the achievement of at least 72 Targets across the Sustainable Development Goals (SDGs) 1.
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