Fahad Saeed is a climate impact scientist for Climate Analytics, based in Islamabad, and Bill Hare is CEO and senior scientist at Climate Analytics.
Pakistan’s southern province of Sindh has been sweltering under 52°C heat in recent days. Not in the news however is that wet-bulb temperatures in the region – a more accurate indicator of risk to human health that accounts for heat and humidity – passed a key danger threshold of 30°C.
Climate change is increasing the risk of deadly humid heat in developing countries like Pakistan, Mexico and India, and without international support to adapt, vulnerable communities could face catastrophe.
What is wet-bulb temperature?
Wet-bulb temperature is an important scientific heat stress metric that accounts for both heat and humidity. When it’s both hot and humid, sweating – the body’s main way of cooling – becomes less effective as there’s too much moisture in the air. This can limit our ability to maintain a core temperature of 37°C – something we all must do to survive.
A recent study suggests that wet-bulb temperatures beyond 30°C pose severe risks to human health, but the hard physiological limit comes at prolonged exposure (about 6-8 hours) to wet-bulb temperatures of 35°C. At this point, people can experience heat strokes, organ failure, and in extreme cases, even death.
Climate change and deadly heat
Globally, around 30% of people are exposed to lethal humid heat. This could reach as much as 50% by 2100 due to global warming. To date, the climate has warmed around 1.3°C as a result of human activity, primarily due to the burning of fossil fuels. And along with the extra heat, with every 1°C rise the air can hold up to 7% more moisture.
A comprehensive evaluation of global weather station data reveals that the frequency of extreme humid heat has more than doubled since 1979, with several wet-bulb exceedances of 31-33°C. Another recent study predicts a surge in the frequency and geographic spread of extreme heat events, even at 1.5°C warming.
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What this shows is that the humid tropics including monsoon belts are all careening towards the 35°C threshold, which is very worrying for countries like Pakistan. The city of Jacobabad has already breached 35°C wet bulb temperatures many times. More areas of the country are likely to be exposed to such life-threatening conditions more often due to climate change.
At 1.5°C of warming, much of South Asia, large parts Sahelian Africa, inland Latin America and northern Australia could be subject to at least one day per year of lethal heat. If the world gets to 3°C, this exposure explodes, covering most of South Asia, large parts of Eastern China and Southeast Asia, much of central and west Africa, most of Latin America and Australia and significant parts of the southeastern USA and the Gulf of Mexico.
Areas of the world that will experience at least one day of deadly heat per year at different levels of warming
Source: ScienceAdvances
Even at 1.5°C of warming, there will be high exposure to lethal heat in large regions where billions presently live. This terrible threat to human life calls for urgent action to limit warming and help at risk communities adapt.
Adapting to hard limits
While 35°C can prove deadly, one study suggests a 32°C wet-bulb threshold as the hard limit for labour. More realistic, human-centred models found this overly optimistic, as direct exposure and other vulnerability factors were ignored. Vulnerable groups including unskilled labourers would be most at risk of losing their income.
In densely populated urban centres, lethal humid heat is not just a future projection but a current reality. This calls for urgent adaptation measures which integrate the risk of deadly heat into urban planning, public health, early-warning systems and emergency response.
Investments in green spaces, heat-resilient buildings and urban cooling are vital adaptation strategies. Community initiatives like awareness campaigns, indigenous cooling strategies and local heat action plans are also essential. Households could consider investing in cooling technologies or migrating – options mostly available to the wealthy.
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As climate change makes lethal humid heat a growing threat in some of the world’s most populous areas, more attention must be paid to understanding its risks – especially in vulnerable regions with huge data gaps. This demands a multidimensional response that combines scientific research, policymaking and community engagement.
The potential scale and level of risk to human life also reinforces the importance of ensuring that the Paris Agreement’s 1.5°C global warming limit is met. To do this, we need to halve emissions by 2030. Countries should therefore strengthen their 2030 emissions targets in line with the warming limit as they prepare equally ambitious 2035 targets in updated NDCs.
The Pakistan heatwave is a terrible reminder of this often-underestimated threat. We must act now to limit warming while we adapt to the growing danger of deadly heat if we are to avoid potentially wide-reaching tragedies in the future.
The post Developing countries need support adapting to deadly heat appeared first on Climate Home News.
When oil and gas shipments stopped flowing through the Strait of Hormuz at the start of the Iran war, Southeast Asian nations were left reeling as the supply crunch laid bare their acute reliance on fossil fuel imports.
As prices soared, governments in the region scrambled to introduce emergency energy-saving measures – from a four-day working week to curbs on air conditioning. Thailand revived decommissioned coal plants while the Philippines, which imports nearly all of its oil, declared a “national energy emergency”.
But the crisis has also prompted renewed resolve to find a long-term solution to their vulnerability at a time when electricity demand is booming to power the region’s growing industry, cooling needs and the mushrooming of energy-hungry data centres.
At the heart of Southeast Asian nations’ response is a longstanding infrastructure project to connect the region’s power grids by 2045 and enable cross-border trading of clean electricity through a network of underground and subsea interconnectors.
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The plans will allow nations with high renewable energy generation potential to trade surplus power to their neighbours and major demand centres like Singapore, helping to integrate more renewables into the power mix and reduce reliance on fossil fuel imports.
“[It] will give us more energy security,” the Philippines’ energy secretary, Sharon Garin, told a press conference after a meeting of the Association of Southeast Asian Nations’ (ASEAN) energy ministers last week, when they discussed accelerating the delivery of the regional grid as part of measures to respond to the energy crisis.
“The Philippines is rich in solar power, Malaysia is rich in hydropower and Indonesia has geothermal: different countries have different resources. [The ASEAN Power Grid] will optimise the utilisation of renewables to the benefits of each member state,” said Garin.
But turning this decade-old political vision into a reality has been slow, held up by painstaking work to harmonise a patchwork of regulatory and legal frameworks and mobilise the private capital needed to build cross-border infrastructure.
More than $300 billion is needed to expand and modernise the region’s fragile grids to support the projected energy demand increase by 2050. This includes $27 billion required to deliver the cross-border interconnections by 2040, according to the International Energy Agency (IEA).
Every year of delay could cost the region billions of dollars in additional fuel costs and lock in new gas infrastructure for decades to come, according to analysis by global energy think-tank Ember.
The building block for energy security
With electrification high on the agenda of the COP31 climate talks in Türkiye next month, there is growing attention on the need to modernise and expand grid infrastructure to cope with growing electricity use and more renewables in the power mix.
Clean electrification and energy efficiency could deliver about a third of cumulative carbon emission reductions between 2026 and 2050, according to the International Renewable Energy Agency’s World Energy Outlook. But delivering that would require doubling annual global grid investment to $1 trillion between now and 2035.
Last month, the UN launched an initiative to accelerate investment into expanding and modernising grids in Southeast Asia and Africa.
First conceptualised in 1997, the ASEAN Power Grid has gained fresh impetus in recent years as countries turn to renewables to cut their emissions and move away from volatile fossil fuel markets.
Energy supply disruption caused by wars in Ukraine and the Middle East has strengthened the case for regional grid connections. Before this year’s conflict began, the Middle East accounted for 60% of Southeast Asia’s crude oil imports. Competition for fewer, more expensive oil and gas shipments has left Southeast Asia facing a $160 billion energy import bill this year. Based on current policies, this could rise to $400 billion by mid-century.
In the Philippines last week, energy ministers agreed on an enhanced planning framework to deliver the ASEAN Power Grid and made progress on regulatory guidelines.
Garin said ministers were considering accelerating the project’s delivery. “The first study was to connect [by] 2045 – that’s too far,” she said.
A strong business case
The economic benefits of the plan have “captured the political imagination” of leaders in the region, Robert Cooke, grids advocacy lead at the Global Renewables Alliance, told Climate Home News. “The business case is stronger than ever,” he said.
“If countries were to go about building their own separate grids, of course that would be an expensive endeavour. But the discussion around the ASEAN Power Grid includes what costs could we share in building out this grid,” added Tiza Mafira, director of the Indonesia office for the Climate Policy Initiative.
Stronger grids would help the region meet collective targets to increase the share of renewable energy in total primary energy supply from 14% to 30% and in installed power capacity from 34% to 45% by 2030.
Connecting and pooling dispersed renewable resources would also help smooth local power shortages caused by daily and seasonal variations, reducing the need for backup gas plants and battery storage.
The IEA found the ASEAN Power Grid could help unlock some of the 20 terawatts of untapped solar and wind potential across Southeast Asia – an amount around 55 times the region’s current total power capacity.
From lines on a map to shovels in the ground
Rather than building a single unified network, the ASEAN Power Grid is developing cross-border links between neighbouring countries and smaller groups of nations.
As of 2025, nine of 18 priority interconnection projects are operational – accounting for around 10 GW of capacity with an additional 13.7 GW planned by 2040.
Source: Ember
A power line channelling up to 200 MW of clean electricity generated from hydropower in Laos to Singapore via Thailand and Malaysia has emerged as a key building block for grid-to-grid trading.
Progress on technical discussions will also help provide the clarity the private sector needs to invest in bankable projects, said Cooke.
In 2025, the Asian Development Bank and the World Bank announced a dedicated funding initiative to support the project.
“The enabling pieces are emerging,” said Monalisa Dimalanta, former chair of the Philippine Energy Regulatory Commission and the National Renewable Energy Board. “But the timelines remain unclear and a 2045 vision cannot answer today’s emergency,” she said.
“A power grid… that exists only on paper will not keep the lights on.”
Singapore: the delivery test
The implications of failing to deliver the ASEAN Power Grid are most acute in Singapore.
Constrained by space, with few renewable energy resources and dependent on gas for more than 90% of its electricity mix, Singapore has emerged as a leading proponent of a regional power grid as it seeks to achieve net-zero emissions by 2050.
To meet its power needs, the city-state aims to import 6 GW of low-carbon electricity by 2035, around one-third of its energy demand – a target which it is set to miss, however.
The plans heavily rely on building interconnectors to import solar power from Indonesia across the South China Sea. Around 40% of the ASEAN Power Grid’s planned interconnections are directed towards Singapore.
Ember’s analysis found that delivering the planned interconnectors by 2035 could enable renewables to meet nearly half of Singapore’s electricity demand. Delays could drop this to only a fraction of the country’s needs, and risk locking in new gas capacity until the 2050s. Without the ASEAN Power Grid, Singapore would need to install an additional 300 MW of gas-fired power capacity to bridge the gap by 2035.
Already home to the largest data centre capacity in Southeast Asia, Singapore’s electricity demand keeps rising, driven by the boom in AI infrastructure. “At one point, [it] either has to build a new gas plant, or it has to get the interconnection to supply that demand,” Lam Pham, an Ember energy analyst and the report’s author, told Climate Home News.
A region at a crossroads
With capital increasingly available, political will is now the biggest risk standing in the way of timely execution, said Pham.
But there are other challenges too, including the lack of frameworks on transmission tariffs and how to share the benefits of clean power trading. “It’s really hard to justify projects without that,” he said.
In addition, climate-fuelled weather events, including extreme heat and tropical storms, pose major threats to the region’s grid infrastructure. Experts say stronger grid interconnection can isolate damage and build the system’s resilience.
Efforts to deliver on the ASEAN Power Grid also come as ministers stressed the “continued importance of oil and gas” for economic development and seek to secure fossil fuel supplies and stockpile oil to prepare for the next crisis.
Despite an acceleration of renewable deployment, particularly solar, coal still generates nearly half the electricity supply in ASEAN member states and dominates the power mix in Indonesia, the Philippines and Vietnam, while Singapore and Thailand rely on gas.
While these measures might help the region with the immediate crisis, “the long-term answer is more domestic renewable energy, electrification, storage, efficiency and regional power trade”, Dimalanta said.
Main image: An aerial view of the MTerra solar project in the Philippines, set to become one of the world’s largest solar-and-battery developments (Photo by Ezra Acayan/Getty Images)
The post SE Asia speeds up plan for connected clean power grid after oil shock appeared first on Climate Home News.
SE Asia speeds up plan for connected clean power grid after oil shock
Climate Change
“Sink or swim”: WA Gov hugely underestimating decline in regional gas demand while sleeping on green exports, new report finds
PERTH, Tuesday 13 October 2026 — A new report from Greenpeace Australia Pacific and Springmount Advisory reveals green commodity exports are an untapped economic opportunity for Western Australia in a declining Asian gas market, while offering a genuine solution for decarbonising Asia.
From Gas to Green: Building Western Australia’s Future State is a comprehensive analysis of the declining gas market in Asia, and the untapped economic opportunity for WA to become a global leader in green commodity exports while driving the regional shift away from fossil fuels.
The report offers key recommendations for the WA Government to support regional decarbonisation through an orderly phase out of gas exports in favour of green iron and other green exports. It comes as global climate leaders from across business, politics and advocacy prepare to meet for the Global Citizen Now: Perth event focused on decarbonising WA.
Key findings:
- Gas demand is falling across WA’s core markets in Asia: Gas demand fell in 2025 and is projected to continue to decline, driven by a combination of global geopolitical factors and domestic concerns.
- Policy shifts in key markets since the war on Iran now prioritise renewables and nuclear over gas: Japan, South Korea and China have legislated energy plans that prioritise renewables and nuclear over gas.
- New WA gas would arrive in a saturated, uncertain Asian market filled with cheaper gas: The US is now the world’s largest liquefied gas producer and plans to double its capacity as it also targets Asian markets.
- Green commodities offer a real solution to sustain WA’s economy: WA can lead Australia’s green commodity exports, which by 2060 could be worth almost a trillion dollars.
- Exporting more WA gas is likely to delay or impede Asia decarbonisation: Despite claims by the gas industry, there is no evidence that WA gas is displacing coal in Asia, and in fact diverts resources from genuine decarbonisation options.
Geoff Bice, WA Campaign Lead at Greenpeace Australia Pacific said: “As our export partners in Asia shift away from expensive and polluting gas, the WA Government has a golden opportunity to pivot our economy to green exports, like green iron, which is the most effective way to help our region to decarbonise.
“The writing is on the wall: gas is in decline, renewables are our future. In this context, it makes zero sense for the government to encourage high risk projects like Woodside’s reckless Browse gas proposal at Scott Reef.
“This report clearly shows that the WA Government faces a choice: sink or swim. They can either allow the gas industry to keep ripping off West Australians and continue propping up its decline, or choose the path that will deliver enormous benefits to the state and the world by becoming a leader in the rapidly expanding green economy.”
Tom Quinn, Managing Director of Springmount Advisory: “Western Australia prospers when it looks to the future and builds for future demand. Twenty years from now, what the world needs is green commodities made using WAs abundant renewable resources. Just like it did with iron ore in the 1950s and gas in the 1970s, WA should look to the future and build what the world will need, not sunsetting industries like gas that are already past their peak.”
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Media contact
Kate O’Callaghan on 0406 231 892 or kate.ocallaghan@greenpeace.org
Lucy Keller on 0491 135 308 or lucy.keller@greenpeace.org