Principles for a Post-Growth Scenario of Ambitious Mitigation and High Human Well-Being
- Mar 17
- 5 min read
Post-growth scenarios synthesize 5 principles—well-being, sufficiency, equity, realigned economy, north-south convergence—challenging growth-oriented mitigation pathways.
A March 2026 Nature Climate Change perspective by Aljoša Slameršak and colleagues synthesizes recent post-growth research advances into five core principles for developing climate mitigation scenarios that prioritize human well-being and ecological sustainability over continued economic growth. Most existing Integrated Assessment Model (IAM) scenarios assume all countries must continually increase GDP to achieve favorable social and climate outcomes, creating challenges because growth drives up energy, land, and material demand—particularly problematic in high-income economies already consuming well beyond levels necessary for well-being.
To reconcile growth with Paris Agreement targets, conventional scenarios rely on historically unprecedented efficiency improvements, rapid global renewable deployment meeting high energy demand, large-scale carbon sequestration requiring massive land and infrastructure commitments, and continuing disparities between global north and south. Post-growth scholarship proposes fundamentally different approaches: reducing less-necessary production, reorienting economies toward human needs satisfaction and ecological goals, and pursuing equitable convergence within and between countries through five organizing principles—well-being, sufficiency, reduced inequalities, repurposing of the economy, and north-south convergence—supported by decommodification and growth-independent innovation.
Key Findings: Existing Scenarios Fall Short of Post-Growth Principles
Growth-Determined Well-Being Poorly Represents Human Needs
Established IAMs model social well-being as utility from consumption, assuming growing per-capita GDP always increases utility and better social outcomes. However, GDP describes only the monetary value of total production, not what is produced, how it's distributed, or whether it satisfies or compromises human needs. Satisfaction of human needs requires access to sufficient housing, healthcare, education, transportation, electricity, heating/cooling, water, sanitation, and nutritious food—the degree to which these are met depends on whether production prioritizes key provisioning systems, not overall economic size. Several recent SSP extensions incorporate post-growth elements: income redistribution toward lower-income countries and poorer households, profound consumption shifts toward efficient and lower-consumption lifestyles, and major changes from sufficiency measures and lifestyle changes. However, even these studies remain limited by growth-oriented IAM methodologies embedded in utility-maximizing, market-clearing, cost-optimization algorithms that restrict representing fundamentally different production and distribution systems envisioned in post-growth literature.
Economic Activity Not Considered as Mitigation Lever
IAMs typically focus on technological change, offering rich representation of low-carbon and negative-emissions technologies, but do not consider economic growth and rescaling of economic activities as potential mitigation levers. Lower-growth SSP3 and SSP4 scenarios are associated with higher mitigation challenges (high population growth, slower innovation, low environmental priority), making them incompatible with Paris goals despite lower GDP. Narratives assuming profound lifestyle changes reducing energy demand are reserved only for moderate and high GDP growth scenarios (SSP1, SSP2, SSP5). The hypothesis that remaining within planetary boundaries may require halting aggregate economic growth is not reflected in mitigation scenario literature. Only a handful of heterodox growth-critical models explore futures where material scarcity, decreasing net energy return, and limited substitutability pose challenges to continued growth—in contrast, established IAMs typically assume limited material resources do not constrain feasible low-carbon transitions or limit future growth.
Inequalities and Convergence Inadequately Addressed
While scenarios in the IPCC AR6 database assume income and consumption convergence between global regions and within countries, none include truly equitable convergence even by 2100. Currently, the top 1% use on average 8 times more per-capita energy than the bottom 10% in the global north, and 40 times as much in the global south. The top 10% globally is responsible for around half of anthropogenic greenhouse gas emissions. Without reducing these inequalities, securing well-being for all while avoiding planetary boundary overshoot becomes difficult. Post-growth emphasizes addressing affluence and energy consumption of the rich as central climate mitigation lever while ending poverty—requiring models to represent distribution of consumption across different need satisfiers and inequalities in less-necessary consumption like excessive flying, oversized housing, and SUVs.
Why This Matters: Five Post-Growth Principles
Well-Being Through Needs Satisfaction: Post-growth derives from eudaimonic needs-sufficiency frameworks defining needs as satiable prerequisites for well-being. Beyond certain levels, increasing material consumption does not substantially increase well-being. Current global energy use shows only 30% (115 EJ/year) allocated to essential consumption for decent living standards, while 70% (290 EJ/year) supports less-necessary consumption. Models should distinguish essential goods strongly supporting need satisfaction from less-necessary goods with marginal well-being effects.
Sufficiency Corridors: Sufficiency defines corridors between production/consumption floors (universal needs satisfaction) and ceilings (ecological limits). DLS literature argues basic needs could be satisfied with less than half currently consumed energy (170-210 EJ/year) and materials globally. Scenarios should quantify populations above/below sufficiency thresholds and prioritize reducing environmentally damaging consumption most marginal to well-being.
Drastically Reduced Inequalities: Fair inequality ratios of 2.5:1 to 8:1 (top 1% to bottom 10% income) based on public surveys would decrease average global north consumption by 55% while increasing global south average by 70%, narrowing per-capita energy range to 25-140 GJ. Models must represent distribution inequalities across income, energy consumption, material footprints, and embodied labour in different sectors.
Realigning Economy: Post-growth calls for reducing destructive and less-necessary sectors (weapons, luxury consumption, industrial meat) while increasing socially necessary forms (renewable energy, public services, efficient housing). Models require improved sectoral granularity showing energy and material flows between sectors and countries, and frameworks differentiating essential, in-between, and excess production according to ecological and well-being criteria.
North-South Convergence: Global south countries need increased energy and material use to achieve DLS, with eventual full per-capita convergence. Currently 53% of global south population falls below decent living thresholds. Scenarios should adjust mitigation burdens to historical emissions and include reparations dedicating northern production to building southern low-carbon infrastructure and essential provisioning systems, accounting for cumulative emissions and ongoing colonial unequal exchange.
Beyond Technical Fixes: Supporting Mechanisms
Decommodification: Public and collective service provision can be more efficient in meeting basic needs than market economies. Modelling decommodification would explore alternative approaches to improving well-being without growth by representing functioning of partially or fully decommodified public systems delinked from GDP, since existing IAMs mediate production-needs satisfaction through income, obfuscating importance of public goods accessible independently of income.
Growth-Independent Innovation: Innovation can support post-growth by enabling sufficient provisioning while reducing resource demand. Economic conditions for rapid innovation can be achieved through targeted investment irrespective of aggregate output trends—empirical renewable energy deployment during the past 15 years of GDP growth slowdown demonstrates this. Models should improve innovation representation by focusing on sector-specific investment and non-economic adoption drivers rather than tying innovation to GDP growth.
Beyond Growth Imperatives: Feasibility and Research Frontiers
The study concludes that post-growth transformation faces categorically different barriers than growth-oriented scenarios. While post-growth will encounter stronger socio-cultural and political opposition from affluent classes and pro-capitalist actors who would see diminished power, it faces weaker geophysical and technological feasibility concerns by decreasing demand for energy, materials, and land—reducing reliance on contentious assumptions about unprecedented efficiency gains, massive renewable deployment, and large-scale carbon sequestration. By reducing energy and material import dependency, post-growth offers advantages for many countries and provides frameworks with more equitable energy pathways through north-south convergence.
The narrowing safe and just corridor for humanity should spur the modelling community to explore a broad range of target-seeking scenarios incorporating post-growth principles. Future research should represent current dependencies between growth and well-being to test decoupling policies, model emergence of conditions for social change including public acceptability and proactive governance, and expand feasibility frameworks to include dimensions relevant to post-growth such as international fairness and social desirability of envisioned scenarios.
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