Every US$1 invested in tackling climate change and air pollution together can generate around US$15 in economic benefits. That is the headline finding of Hidden Assets: The Economic and Health Case for Climate and Clean Air Action, a landmark report from the UN Environment Programme (UNEP) and the Climate and Clean Air Coalition (CCAC) released on the International Day of Clean Air for blue skies. The assessment finds that climate and clean air action delivers higher returns together than either delivers alone — and that the biggest barriers are institutional, not technical.
FAKTA
- The report: Hidden Assets: The Economic and Health Case for Climate and Clean Air Action — UNEP and the CCAC, released 7 September 2026 in Nairobi, the first comprehensive global economic assessment of integrated climate and clean-air action.
- Headline finding: US$1 spent on integrated climate and clean-air measures can return about US$15 in market and non-market economic gains — more than tackling either challenge alone.
- Market returns alone: about US$4 per US$1, with market returns exceeding implementation costs within 10 years and an internal rate of return of 60%.
- The package: 25 proven measures across six sectors — energy and fossil fuel systems, industry, transport, agriculture and food systems, residential cooking and heating, and waste management.
- Annual benefits: equivalent to 2.8% of global GDP by 2035, 4.5% by 2050 and 11.4% by 2100.
- Health impact: by 2050 the solutions could avoid 144 million premature deaths and hundreds of millions of chronic-disease cases; in 2025 outdoor PM2.5 and ozone were linked to about 6.4 million premature deaths, and household air pollution to another 2 million, including around 300,000 children.
- Cost of delay: every year of delay costs more than US$1.5 trillion in forgone benefits.
Why the joint return beats either alone
The report’s core economic argument is simple: many of the same sectors and pollutants drive both crises, so coordinated action produces higher returns than addressing climate change and air pollution separately. The 25 measures include renewable energy, electric vehicles, clean fuels for cooking, stronger vehicle standards and action across high-emitting sectors. UNEP Executive Director Inger Andersen put it bluntly: “For too long, we have treated climate action as a cost to be managed and air pollution as the unfortunate outcome of development. This report shows the opposite: clean air is a key driver of development, health, food and energy security, and climate stability — an asset we must invest in.”
The barriers are institutional, not technical
The assessment finds that the chief obstacles are often neither technical nor economic but institutional. Siloed decision-making, limited enforcement capacity, inadequate financing and weak coordination among ministries are preventing proven measures from being implemented at the speed and scale needed. The UNEP analysis estimates that investing in enabling conditions could bring full implementation forward by up to a decade — worth up to US$10 trillion in savings by 2040.
Health at the centre
The report places health at the centre of the economic case. In 2025, human-caused outdoor PM2.5 and ozone were linked to about 6.4 million premature deaths, and household air pollution to another 2 million — including around 300,000 children. If the 25 measures were fully implemented, they could avoid 144 million premature deaths and hundreds of millions of cases of chronic disease by 2050. UN Secretary-General António Guterres, in his message for the report, said “the case for action has never been clearer,” adding that “accelerating the transition away from fossil fuels is one of the fastest and most effective ways to clean the air while tackling the climate crisis.”
The bottom line
The climate and clean air case is no longer only a moral one — it is an investment case with a 15-to-1 headline return, a 60% internal rate of return, and health gains measured in millions of lives. What stands between the world and those returns is not technology or economics, but the institutional capacity to implement what already works. As the report puts it: proven solutions exist; what is missing is the decisive leadership to deliver them with the speed and coordination the crisis demands.
Read more on Watan News: the US$1-to-US$15 case for climate and clean air.
