To comply with its human rights obligations, how much does an individual state have to do reduce greenhouse gas emissions within its jurisdiction and by when? And what are the criteria by which a tribunal can objectively assess the adequacy of a state’s efforts to reduce emissions? This chapter proposes five tests, building on the practice of the UN Committee on Economic, Social and Cultural Rights (CESCR), for such an assessment. First, has every feasible human rights-consistent step been taken by the state to reduce emissions? Second, is the state subsidizing emissions, disproportionately allocating resources to spending that does not benefit the public, or failing to take adequate steps to mobilize resources towards emissions reduction? Third, is the climate plan reasonably ambitious in comparison to peer states at comparable levels of development? Fourth, has there been a progressive increase in ambition and avoidance of any retrogression? Fifth, are the state’s plans to reduce emissions in line with limiting the global temperature increase to 1.5°C? A sixth test addresses the “how” question, rather than “how much or how fast”: is the manner in which emissions are being limited consistent with human rights standards?