Extreme heat to kill 430,000 more yearly by 2050; poor nations lack cooling power
Synopsis
A new Climate Impact Lab report exposes a lethal paradox: the countries most scorched by climate change are the least equipped to afford the cooling that could save lives. With 3,77,000 people in 18 nations projected to die annually by 2050 — and electricity access growing at a fraction of wealthier neighbours — this is climate injustice rendered in body counts.
Key Takeaways
Extreme heat is projected to cause 430,000 additional deaths annually by 2050 , with 10 times more fatalities in poor countries than rich ones.
Areas across 18 countries home to 676 million people face a deadly combination of extreme heat and inadequate cooling infrastructure.
Around 3,77,000 people in these regions are projected to die from heat annually by 2050 , mostly in northern sub-Saharan Africa and Southern Asia .
Cooling electricity is projected to grow seven times faster in middle-income than in low-income countries due to climate change.
The projected electricity increase per person in Niger will be just one-ninth that of Saudi Arabia , with Niger set to lose 27,000 more lives annually by 2050.
The Climate Impact Lab is building a global adaptation playbook, but researchers warn that many strategies remain untested.
Climate-driven temperature rises are projected to cause approximately 430,000 additional deaths annually by 2050, with 10 times more fatalities occurring in low-income countries than in wealthier nations, according to a new report by the Climate Impact Lab released on Monday, 27 July. The report warns that the ability to save those lives hinges almost entirely on access to electricity for cooling — a resource that the most heat-exposed nations are least equipped to provide.
The Cooling Gap: Who Has It, Who Does Not
The Climate Impact Lab's findings reveal a stark global divide: today, only the world's wealthiest populations have reliable access to the energy needed to power air conditioning. While middle-income countries are projected to see their energy markets mature enough to support greater cooling consumption, low-income nations are being left behind at a dangerous pace.
Electricity used for cooling is projected to grow seven times faster in middle-income countries than in low-income ones due to climate change. The projected increase in electricity use per person in low-income countries is so marginal, according to the report, that it would be sufficient only to power a single LED bulb for four months.
18 Countries, 676 Million People Trapped in Deadly Conditions
The report identifies areas across 18 countries — home to 676 million people — that are caught in a lethal combination of extreme heat and inadequate cooling infrastructure. Around 3,77,000 people in these regions are projected to die annually by 2050 due to heat exposure and insufficient energy access.
All of these populations currently live in either low-income or lower middle-income countries. The majority are concentrated in northern sub-Saharan Africa, including Niger, Mali, Burkina Faso, and Chad. The remainder live in Southern Asia, spanning Pakistan, Bangladesh, Nepal, and Myanmar.
The Gulf Contrast: Same Heat, Vastly Different Outcomes
The disparity becomes stark when comparing similarly hot regions with different income levels. Gulf nations such as Bahrain, Kuwait, the UAE, and Saudi Arabia face comparable temperatures to sub-Saharan Africa but consume far more electricity for cooling and are projected to expand that capacity significantly — resulting in far fewer heat-related deaths.
The contrast between Niger and Saudi Arabia is particularly striking. The projected increase in electricity use per person in Niger will be just one-ninth that of Saudi Arabia, and communities in Niger are expected to lose 27,000 more lives annually by 2050 due to a warming climate than their wealthier counterpart.
What Researchers and Experts Are Saying
Michael Greenstone, co-founder of the Climate Impact Lab and the Milton Friedman Distinguished Service Professor in Economics at the University of Chicago, described the findings as exposing 'one of climate's great cruelties.' 'Air conditioning is a life saver, and climate change will no doubt lead to more AC adoption in today's wealthy countries,' Greenstone said. 'Our research finds, however, that in too many countries around the world people will not be able to respond in the same way. The result is lots of death in the very countries that have contributed the least to climate change.'
Greenstone also called the findings 'a clarion bell that many countries do not have much time to improve the functioning of their electricity markets so they deliver inexpensive and reliable energy and identify other successful adaptations that can save lives.'
Ashwin Rode, a fellow at the Climate Impact Lab and director of scientific research at the Energy Policy Institute at the University of Chicago (EPIC), said the research pinpoints where the greatest risk is concentrated. 'We've identified the places most at risk of seeing more people die from the heat and least able to power up ACs to save them, so people and governments can zero in on saving the greatest number of lives,' Rode said. He added that communities will need to pursue heat early warning systems, expanded healthcare access, and targeted social programmes, while acknowledging that 'many adaptation approaches remain untested.'
What Comes Next
The Climate Impact Lab is developing a global, data-driven playbook of adaptation priorities and tested strategies for funders, national governments, and local administrations facing escalating climate risks. The urgency is clear: without rapid improvements in energy access and cooling infrastructure in the most vulnerable regions, the death toll from extreme heat is set to compound with every degree of warming. The window to act, researchers warn, is narrowing fast.
Point of View
And by when? Adaptation playbooks are valuable, but without binding finance commitments from high-emitting nations, they risk becoming well-researched documents that save no one.
NationPress
27 Jul 2026
Frequently Asked Questions
How many additional deaths will extreme heat cause by 2050?
Climate-driven temperature rises are projected to cause approximately 430,000 additional deaths annually by 2050, according to the Climate Impact Lab report. Low-income countries are expected to bear 10 times more of those deaths than wealthier nations.
Which countries are most at risk from extreme heat and lack of cooling?
The report identifies areas in 18 countries, home to 676 million people, that face a deadly combination of extreme heat and insufficient energy for cooling. These are primarily in northern sub-Saharan Africa — including Niger, Mali, Burkina Faso, and Chad — and Southern Asia, including Pakistan, Bangladesh, Nepal, and Myanmar.
Why can't low-income countries simply adopt more air conditioning?
The projected increase in electricity use per person in low-income countries is so small it would only power a single LED bulb for four months, according to the report. Without significant improvements in energy access and market infrastructure, widespread air conditioning adoption remains financially and logistically out of reach for these populations.
How does the situation in Niger compare to Saudi Arabia?
Both Niger and Saudi Arabia face similarly extreme heat, but the projected increase in electricity use per person in Niger will be just one-ninth that of Saudi Arabia. As a result, communities in Niger are expected to lose 27,000 more lives annually by 2050 due to a warming climate than their wealthier counterpart.
What solutions are being proposed to address heat deaths in vulnerable countries?
Researchers at the Climate Impact Lab recommend improved energy access, heat early warning systems, expanded healthcare, and targeted social programmes. The Lab is also developing a global, data-driven adaptation playbook for governments and funders, though it acknowledges that many of these approaches remain untested at scale.
