A radical rethink of how nations measure progress is urgently needed to avert climate disaster, the United Nations secretary general has warned, as the world grapples with the enduring link between economic expansion and environmental harm. António Guterres called for economies to “move beyond GDP” this week, arguing that current accounting systems are driving the planet towards catastrophe, as published by The Guardian.
His intervention underscores a deepening debate between traditional economic models and an increasingly influential school of thought known as “post-growth” economics. This field questions whether constant growth is compatible with solving the climate crisis and proposes new frameworks that account for environmental damage.
The urgency is framed by recent data showing that in 2024, global GDP per capita and annual carbon emissions both reached new highs. This pattern reinforces a long-held argument, heard during Cop30 negotiations in Brazil last year, that rising emissions are an unavoidable cost of prosperity for developing nations, which have historically had looser reduction targets.
Post-growth economists often advocate moving away from Gross Domestic Product. Examples include the “doughnut economics” model adopted by Amsterdam and New Zealand’s “wellbeing budget”. Tim Jackson, a professor of sustainable development at the University of Surrey and a leading figure in the field, stated: “Economic growth has a near mythical status in the affections of economists and politicians. But wishful thinking won’t solve the climate crisis.”
The debate has roots in the 1970s with the controversial book Limits to Growth. It has evolved alongside the scientific study of “planetary boundaries” – nine critical ecological processes, from climate change to ocean acidification. A planetary health check published in September found seven of these nine boundaries were being breached to a dangerous degree.
Research applying these boundaries to over 150 countries has yielded a stark conclusion. A 2018 study by the University of Leeds, which examined metrics like CO₂ emissions and land use against social indicators like income and life satisfaction, found no nation met its residents’ basic needs while staying within its biophysical limits. The better off a country’s residents were, the more environmental ceilings were broken.
This has led to a fundamental split in how a sustainable future is envisaged. Academics broadly identify three contemporary positions.
One group, the green Keynesians, believes state-led transition through policies like a green new deal can achieve sustainable “green growth”. Another, the green capitalists, also pursues growth but through market reforms, technology, carbon pricing and deregulation. Both share support for renewables and public-private partnerships.
In contrast, the post-growth camp argues continued growth is impossible within planetary boundaries. This encompasses approaches like de-growth, which calls for radically scaling down production and consumption. De-growth proposals have included working time reductions, such as a four-day week, and maximum income caps. Others in the post-growth sphere are agnostic on green growth, arguing policymakers must simply shift priorities away from growth entirely.
A central dispute is over “decoupling” – breaking the link between growth and emissions. Advocates point to nations like the UK, France, Germany and the US, which have increased GDP per capita since the 2000s while cutting domestic carbon emissions. However, experts heavily contest the evidence.
Peter Victor, an emeritus professor at York University in Toronto, argues decoupling discussions focus on the wrong metric. “It is the accumulated stock of carbon dioxide in the atmosphere that causes climate change, not the annual flows. We are very far from decoupling the stock of atmospheric carbon dioxide from economic growth,” he said. Others note that while some countries have reduced domestic emissions, the picture is more mixed when accounting for emissions from imported goods, and that major economies like India and China have yet to significantly decouple annual emissions from growth.
The global destination, agreed under the Paris agreement, requires carbon emissions to fall 45% by 2030 and reach net zero by 2050 to limit warming to 1.5C. What remains the critical, unresolved question is the path to get there and whether the world’s economies can continue to grow on the journey.
