Intergenerational Report Underplays Climate Crisis Impact on Australia 2026

The Intergenerational Report underplays the climate crisis impact on Australia’s future, experts warn, criticising the government’s latest snapshot of life in 40 years for ignoring the economic and social damage expected from worsening global heating.

What the Intergenerational Report Says About Climate Change

The seventh Intergenerational Report, which projects out to 2066, finds the effects of global heating four decades from now are “highly uncertain,” pointing to the pace of the global energy transition as a key source of unpredictability. It notes that sea level rise will have the greatest effects on coastal and low-lying areas, while hotter temperatures could reduce worker productivity, affect agricultural crop yields, and damage tourism.

“Over the next 40 years, increasingly frequent and severe natural disasters will pose a significant economic risk,” the report states. It also mentions Treasury modelling that finds a disorderly approach to the net zero transition could result in a cumulative $2tn hit to the economy by 2050.

Experts Criticise the Report’s Optimism

Assoc Prof Ben Neville, deputy director of Melbourne Climate Futures at the University of Melbourne, said that while the report “connects demographic trends with threats on the horizon, it is negligent in ignoring the economic damage that the changing climate already is and will increasingly bring in the next 40 years.”

Neville added: “As the geopolitics show, we are clearly on this disorderly pathway.” He argues that the report fails to adequately account for the accelerating costs of climate inaction, including more frequent disasters, supply chain disruptions, and health impacts.

Key Climate Risks for Australia’s Future

• Coastal inundation: Rising sea levels threaten major cities and infrastructure.
• Productivity losses: Extreme heat reduces outdoor worker output and agricultural yields.
• Tourism decline: Damaged natural assets like the Great Barrier Reef deter visitors.
• Disaster costs: More frequent floods, fires, and cyclones strain public finances.
• Transition risks: A disorderly shift to net zero could cost the economy $2tn by 2050.

Comparing Climate Projections and Economic Impacts

Why the Report’s Uncertainty Framing Is Problematic

By labelling climate effects as “highly uncertain,” the report risks downplaying the urgency of action. Experts argue that uncertainty should not be an excuse for inaction, especially when the costs of a disorderly transition are already quantifiable. The report’s own modelling shows a $2tn hit by 2050 if the net zero shift is messy, yet it stops short of recommending aggressive mitigation policies.

Neville and others call for the report to integrate climate damage into its long-term projections more explicitly, rather than treating it as an external shock. They say that ignoring the compounding nature of climate impacts—where repeated disasters erode resilience and economic capacity—underestimates the true burden on future generations.

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