This story was originally published by Yale Environment 360.
After a decade of declining to finance large hydroelectric dams, the World Bank is getting back into the business in a big way.
Throughout the last half of the 20th century, the bank was the world’s leading supporter of big hydro. But over the last two decades, it followed a zigzag pattern as dam supporters and critics inside the institution took turns determining hydro policy.
During the last 10 years, the critics — disturbed by big dams’ huge social and environmental costs and their long construction timelines — seemed to dominate, and the bank supported only one new big hydro project.
But earlier this week the bank’s board of directors approved a scheme to make the bank the lead financier in a $6.3 billion project to finish construction of the Rogun Dam in Tajikistan. The frequently stalled project, launched in 1976, is now about 30 percent complete. If fully built, it would become both the world’s tallest dam, at 1,100 feet, and with its total price tag of $11 billion, one of the world’s most expensive.
The World Bank and Democratic Republic of Congo officials also have been negotiating the terms of a deal that would include financing Inga 3, the third of eight proposed dams in a megaproject known as Grand Inga.
Jaw-dropping in scale, Grand Inga is a $100-billion venture that would be the world’s largest dam scheme, nearly doubling the power output of China’s Three Gorges, currently the world’s largest hydroelectric dam, and potentially bringing electricity to a sizable chunk of the African continent. It would also reconfigure the hydrology of the world’s second-most-powerful river, the Congo, in what opponents consider environmentally harmful ways.
The Three Gorges dam on the Yangtze river in China (Photo: Pedro Vasquez/Flickr)
In addition, last April the bank “agreed in principle” to lead a consortium of international and regional banks financing a $1.1 billion dam, one of Nepal’s biggest, on the Arun River. Called the Upper Arun, the dam is backed by Indian companies, and its electricity is intended for export to India.
But Nepal is already sated with hydroelectricity, and as My Republica, a Kathmandu newspaper, reported in October, it has for several years been wasting massive amounts of produced electricity because of the inadequacy of its transmission lines.
The Upper Arun dam is also being built in a region that’s highly vulnerable to earthquakes and to floods caused by the bursting of ice dams on glacial lakes.
The bank’s role in these projects marks a sharp shift in its approach towards hydroelectric dams. “Rogun and Inga are the biggest dams in the world, on a scale we haven’t seen in decades,” said Josh Klemm, co-executive director of International Rivers, an Oakland, California-based river protection NGO. From 2014 to this year, the bank supported only one new major hydropower project, Nachtigal in Cameroon.
Yet between this week and mid-2025, the bank’s board of directors is likely to approve financing for five major dams, including Rogun and Inga 3.
“We are witnessing a massive move [by the World Bank] to consider financing a range of large projects expected to have huge impacts on river basins, or that have already provoked huge, historic controversies,” said Eugene Simonov, coordinator of the Rivers Without Boundaries International Coalition and a researcher at the University of New South Wales, Canberra, in an interview. “The World Bank is revisiting projects it once dropped because of obvious challenges and risks, but those risks did not go away.”
In response to questions, World Bank officials said in a statement, “There has been no policy change on financing hydropower.” The statement continued, “Nevertheless, it has become increasingly clear that hydropower is an important component of promoting clean energy investments,” citing hydropower’s potential to supplement solar and wind energy.
The World Bank’s support for big hydro has been intermittent since the late 1990s, when social and environmental controversies sparked by its dam-building efforts spurred it to convene an investigative body — called the World Commission on Dams — of 12 independent experts to make recommendations for proper planning, design, and construction procedures for big dams. But the bank found the Commission’s recommendations, issued in 2000, so restrictive that it dismissed them.
Instead, it adopted a policy of “High Risk/High Reward” that wholeheartedly embraced big hydro. But the bank backed off when its dams once again triggered controversy. In 2013, the bank tried again to back big hydro, then backed off until 2018, when it softened its social and environmental standards for such projects.
“We believe the bank’s rediscovered fondness for big hydro reflects a desire by Ajay Banga, the bank’s president since June 2023, to kick off his tenure with a splash, even if that involves overlooking environmental and social issues that previously would have ruled the projects out,” said Klemm.
Ajay Banga speaks at the World Economic Forum (Photo credit: World Economic Forum)
Yet bank officials seem to be playing down hydropower’s renewed prominence in their plans, experts say, noting that they may not want to draw attention to the high costs of building dams at a time when President-elect Donald Trump may be considering ending U.S. support for the bank.
Project 2025, the compendium of controversial nationalist policies devised by advisors close to Trump, says the new administration “should withdraw from both the World Bank and the International Monetary Fund and terminate its financial contribution to both institutions.” The U.S. is the bank’s largest contributor.
No matter how many of these projects result in completed dams, experts believe the bank’s involvement will not alter the global dam-building industry’s current downward trajectory, for many increasingly obvious reasons. These include dams’ enormous upfront costs followed by waits of as long as a decade or more before electricity revenues begin flowing; their destruction of fisheries and riverine ecosystems; their displacement of a conservatively estimated 80 million people around the world and their damage to the livelihoods of a half-billion more; their substantial emissions of methane from some reservoirs; their steep reductions in energy production when drought — which is increasingly common due to climate change — empties reservoirs, as is currently happening in southern Africa and elsewhere; and the seeming coup de grace, their declining competitiveness with increasingly less costly wind and solar installations.
River protection NGOs such as International Rivers argue that the bank’s imprimatur lends an unjustified sheen to the industry, encouraging other regional and international banks to support still more dam projects. “We are writing to express our collective alarm at the notable surge in proposed and recent World Bank support for extensive hydropower development,” began a nine-page, October 23 letter to bank leaders signed by more than 100 environmental NGOs around the world. The letter called on the bank to stop investing in virtually all hydropower projects. The bank answered promptly but cursorily, reaffirming its “partnership” with the NGOs, but it did not address the letter’s points.
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Rogun and Grand Inga have been magnets for controversy for decades. Tajikistan is a locus of competition in Central Asia, with Western, Arab, Russian, and Chinese interests all competing for political and economic leverage; one way for Europe and the U.S. to gain influence with Tajikistan’s leaders is to help them build the world’s tallest dam there. Supporting Rogun may be a particularly potent tactic as the project is highly popular in Tajikistan and, according to Simonov, the nation’s leaders are “obsessed” with the dam.
One of Rogun’s liabilities is that it will displace between 50,000 and 60,000 people, according to a World Bank document. Simonov said engineering firms proposed alternate plans to build a dam that would be at least 115 feet lower and displace up to 30,000 fewer people. Officials rejected those plans, according to Simonov, because their primary interest was in the prestige they believed would come with building the world’s tallest dam.
Between 2033, when Rogun is projected to be completed, and 2039, when its reservoir is slated to be full, the dam will begin generating electricity and, according to an appraisal prepared for the bank’s board of directors, “will bring significant domestic and regional welfare benefits, contribute to the decarbonization of regional power grids in Central Asia, and potentially transform the Tajik economy.”
Of more immediate interest to Tajiks, the dam’s output should eliminate the electricity blackouts that disrupt heating during the country’s cold winters. The catch is that the water that will turn the Rogun power plant’s turbines in the winter will be impounded from the Vakhsh River during the summer, which means it will no longer reach farmers and others who depend on it downstream in Afghanistan, Turkmenistan, and Uzbekistan, according to Simonov.
Rogun will also severely threaten Tajikistan’s Tigrovaya Balka Nature Reserve, a UNESCO World Heritage site, by permanently eliminating floods crucial for sustaining floodplain forests, environmentalists say. And by the time the dam is finished, according to the October 23 letter from NGOs to the World Bank, other renewable electricity options are projected to be far cheaper.
The World Bank appraisal of Rogun categorized the project’s overall risk as “high.” Among the risks it enumerated were the limited experience of Tajik officials, which has resulted in both design and construction delays and “technical and dam safety issues”; the project’s impact on national debt; the poor performance of Tajikistan’s electricity sector, which could limit revenues from electricity sales; and the project’s location in an active seismic zone.
A study comparing greener energy alternatives to Inga 3, published in Environmental Research Letters in 2018, suggests that the dam is not financially prudent. It concludes that in most scenarios, “a mix of wind, solar photovoltaics, and some natural gas is more cost-effective than Inga 3.” Since the study appeared, the costs of solar and wind have only declined.
The post In a major reversal, the World Bank is backing mega dams appeared first on Climate Home News.
Israel’s bombardment of Gaza during the conflict that broke out in October 2023 has wrecked progress towards adapting the enclave to climate change and left two million Gazans vulnerable to heatwaves, drought and disease, the Palestinian Authority (PA) said in a new climate plan submitted to the United Nations.
Palestine’s third nationally determined contribution (NDC), uploaded to the UN climate body’s website this week, says that while “the aggression on the Gaza Strip did not make the climate worse”, “it removed the housing, water and sanitation systems, health facilities, energy networks, roads and livelihoods through which people absorb a climate they were already struggling with.”
The 91-page document lists the types of infrastructure it says Israel has destroyed and notes how the destruction will worsen the impacts of climate change. It says the bombing of hospitals and rising hunger have make it harder for Gazans to cope with the health impacts of climate-driven heatwaves and waterborne diseases.
The destruction of water tanks, boreholes and desalination plants, meanwhile, have left Gazans struggling with the effects of water shortages and drought, while mass unemployment reduces people’s ability to afford climate-driven price rises. The erasure of most of the Strip’s homes makes it more difficult for people to avoid the sun’s increasing heat, the NDC said.
Many Gazans are now living in the ruins of collapsed buildings or in makeshift shelters and tents that offer little or no protection from high temperatures.
Palestine’s previous goals to cut emissions and adapt to climate change in Gaza, expressed in its last NDC five years ago, were based on a pre-war baseline that “no longer describes anything that exists”, the NDC says. Progress made since 2021 has now been destroyed, it adds.
Green reconstruction of Gaza
Instead of continuing to aim for these adaptation and emissions-reduction goals, the PA is now calling for the green reconstruction of Gaza. It says buildings should be constructed again in an energy-efficient manner with solar panels and served with modern water, waste and transport systems.
While the PA, controlled by the Fatah political party, continues to claim legitimate control of Gaza, the strip was effectively governed by Fatah’s rival Hamas between 2007 and the recent war. Control is now split between Israel and the political wing of Islamist militant group Hamas, after a US-backed ceasefire took effect in October 2025, although a UN-backed committee plans to take over.
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The United Nations, European Union and World Bank have jointly estimated that Gaza needs $71.4 billion of investment in the next two years to recover and build back. This process should be Palestinian-led, they said in April.
But US President Donald Trump has said the US should “take over” and “own” Gaza and redevelop it as the “Riviera of the Middle East”. Israel’s right-wing prime minister Benjamin Netanyahu has said that Israel should control the territory with civil administration managed by Palestinians favourable to Israel.
With occupation, targets conditional
In the other part of Palestine, the West Bank, the Palestinian Authority carries out some government functions, but ultimate control rests with Israel, which has occupied the West Bank since 1967.
Because Israel controls planning in most of the West Bank, the NDC argues that the PA cannot pursue all the climate projects it wants. In addition, Israel restricts the movement of PA officials, making data collection difficult, and controls the West Bank’s electricity supply meaning that the PA cannot control whether it comes from dirty or clean sources of energy.
Given this situation, the NDC says that all of Palestine’s new climate targets are conditional but it will aim to reduce emissions 12.8% below a business-as-usual baseline by 2035 and 17.1% by 2040. If the Israeli occupation ends and Palestine regains full sovereignty over its land and resources, it will aim for reductions of 15.1% and 19.1% by 2035 and 2040 respectively under an “independence pathway”.
That could allow, for example, for greater electrification and reducing emissions per unit of growth, the document said.
To achieve the 2035 emissions-reduction target and adapt to the impacts of climate change, the PA says it needs $8.6 billion in total. This funding would be spent on measures like encouraging solar farms and rooftop solar and scaling up solar water heating to cover four-fifths of households. To complement the planned increase in solar power, the authority wants to modernise the electricity grid and install battery storage.
In the transport sector, it aims to promote the uptake of electric vehicles, develop bus rapid transit corridors and scrap old polluting trucks and buses. In Gaza in particular, it wants to deploy 66 electric buses when the conflict ends.
To adapt to climate-driven drought, the NDC includes initiatives to reuse wastewater through treatment plants, build desalination plants in Gaza to remove salt from seawater, and promote irrigation for farmers.
The new climate plan was prepared by Palestine’s Environment Quality Authority, with support from the United Nations Development Programme and the governments of Britain and Spain.
The United Nations recognised Palestine’s statehood in 2012 and it joined the UN’s climate convention and signed the Paris climate agreement – which requires countries to submit more ambitious NDCs every five years – in 2016.
The Israeli foreign ministry did not respond to a request for comment. But in late 2024, then Israeli climate envoy Gideon Behar told Climate Home News that the war and the resulting environmental destruction in Gaza was the fault of Hamas.
The post Palestine: Israel’s bombing has left Gaza vulnerable to climate change appeared first on Climate Home News.
Palestine: Israel’s bombing has left Gaza vulnerable to climate change
Solar power generation in the UK reached a new record over the summer of 2026, as temperatures across the nation soared, according to new analysis by Carbon Brief.
Collectively over June, July and August, solar farms and rooftops generated 8.8 terawatt-hours (TWh) of electricity in the UK*, as shown in the chart below.
Speaking to Carbon Brief, Chris Hewett, chief executive of trade association Solar Energy UK welcomed the new record, adding that it was driven by “clear skies and continued growth in deployment”.
This surge in generation took place amid the hottest summer on record in the UK, with five heatwaves between May and August.
Summer 2026 was the sixth sunniest on record, with more than 620 hours of sunshine, according to the Met Office. England and Wales – which experienced the most extreme heat – saw their second-sunniest summers on record.
June 2026 was the hottest June in England since records began in 1884, according to Met Office data, while Wales and the UK as a whole experienced their second-warmest June.
It was the driest July for England and Wales since records began in 1836, with some parts of London seeing no rain at all in the month, while Wisley in Surrey had no rain for 62 days.
In England, temperatures peaked at 38.1C at Kew Gardens in London on 13 August.
According to the Met Office, this summer’s record mean temperature was made 130 times more likely by climate change.
Amid these hot and sunny months, solar power generation increased 23% from the same period in 2025. This is double the level of solar generation over the summer of 2021, according to Carbon Brief analysis.
While solar panels can be affected by periods of extreme heat, the longer hours of daylight and higher levels of irradiation over the summer more than offset any efficiency losses.
June, July and August all saw solar set new monthly records for solar generation – July saw the highest solar generation in a calendar month ever, with 3.3TWh meeting 15% of overall electricity demand for the month.
As of the end of August, the total UK solar generation in 2026 stood at 17TWh – 13% higher than the same point in 2025.
The number of solar farms and rooftop installations has grown substantially in recent years, helping to boost generation. Domestic rooftop solar accounts for around 29% of total capacity.
In 2025, the UK’s solar capacity reached 21 gigawatts (GW) by the third quarter of the year, according to UK government figures. This is a jump of 3GW, or 18%, year-on-year, as Carbon Brief reported in January.
(Capacity is the maximum output possible from an electricity generation, whereas generation is what was produced over a certain time period, such as a day, month or year.)
According to the University of Sheffield, the installed solar capacity is now nearly 24GW.
This includes nearly 172,000 solar installations that have been fitted across the UK since the start of 2026, according to recent government figures. In July alone, more than 19,800 rooftop solar panels were installed – the equivalent of one installation every two minutes.
In total, nearly 1.7m households in the UK now have solar panels installed.
Over 26 heatwave days this summer – periods of at least three days when temperatures exceed the Met Office’s county-level heatwave temperature threshold – UK households with rooftop solar panels avoided an estimated £86.7m in electricity costs, according to analysis by Utility Bidder.
Talking about the surge in solar generation this summer, Hewett says:
“[It] not only kept bills down for people with solar and batteries in their homes, but helped keep overall power prices much lower than they would have been if Britain had been relying on more gas generation during the day”.
Despite the record generation, no new half-hourly solar power output record was set in the summer of 2026. This still stands at 15.2 megawatts (MW) on 23 April 2026.
* This article refers to the UK throughout, but strictly relates to the island of Great Britain, made up of England, Scotland and Wales. Northern Ireland is part of the separate, all-Ireland electricity system.
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The post Analysis: UK solar power hits record high over summer 2026 appeared first on Carbon Brief.
Farmers around Europe are dealing with the aftermath of a summer of extreme heat, drought and wildfires that were exacerbated by climate change.
Human-caused climate change is increasing the severity and likelihood of many extreme weather events around the world, which is increasing volatility for food producers.
This summer resulted in, for example, shrunken potatoes in the Netherlands, reduced carrot harvests in France, dried-up rice fields in Italy and scorched olive groves in parts of the Mediterranean region.
Global food prices are currently at their highest level since early 2023 due to “heatwaves and energy price dynamics”, according to the UN Food and Agriculture Organization.
Other factors such as blocked fertiliser supplies in the Strait of Hormuz and high fuel costs have also played a role in this year’s agricultural outputs.
In the six charts below, Carbon Brief provides a snapshot of the impact this summer’s extremes are considered to have had on crop production and yields across Europe.
1. Most EU countries expect to see declines in cereal production this year
2. Most countries are recording reduced crop yields
3. Around €2bn worth of cereal losses after June heatwave
4. UK yields of wheat, barley and oats are all due to drop in 2026
5. Maize production in France is due to hit a four-decade low
1. Most EU countries expect to see declines in cereal production this year
France, in particular, will see heavy losses in the amount of cereals – such as wheat, barley and oats – it produces this year, according to European Commission data.
French cereal production is expected to drop by almost 8 megatonnes (Mt) in 2026, compared to 2025.
The chart above shows that most European countries, aside from Bulgaria, will also see production losses this year.
Germany is due to see the second-largest losses in production, dropping by almost 4Mt compared to 2025.
Prof Til Feike, a cropping systems expert at the Julius Kühn-Institut, says many areas in Germany and Austria, as with other parts of Europe, have been “hit hard by a long-lasting dry period in combination with record-high heatwaves”.
This has resulted in dry grassland for animals and lower yields of maize, which is a “key fodder crop” for livestock. He tells Carbon Brief:
“In the long run, farming must adapt better to more extreme weather conditions, not only heat and drought, but also prolonged wet periods. So, there is no one-fits-all solution for climate change adaptation.”
2. Most countries are recording reduced crop yields
Heat and a lack of water have “substantially worsened” crop expectations this summer in western and most of central Europe, according to a recent bulletin from the EU Joint Research Centre.
Yields are expected to be “significantly reduced”, with local crop failures “likely” in areas such as France, southern Germany, northern and central Italy, and Hungary, it added.
The chart below shows that yields of cereal grains – which, here, refers to the tonnes of a grain grown per hectare of land – are expected to fall in most EU countries in 2026.
Slovakia, Austria and Hungary are expected to see the largest declines in cereal yields, reducing by more than one tonne per hectare in 2026 compared to 2025.
The recent EU bulletin noted that irrigated crops performed well in Portugal this summer – the country with the largest yield increases. Other crops relying on rainfall showed growing signs of heat stress, it added.
3. Around €2bn worth of cereal losses after June heatwave
The record heatwave that hit many parts of Europe in June contributed to an estimated €2-2.3bn in cumulative grain production losses, as shown in the chart below.
The intense June heat in western Europe would have been “virtually impossible” just 50 years ago, according to a rapid climate attribution study. It was the region’s hottest June on record.
The Energy & Climate Intelligence Unit (ECIU) thinktank analysed June and July 2026 grain forecasts from Coceral, a European grain traders association.
ECIU estimated lost supply by multiplying the change in tonnes of grains between these two months by prices for harvest delivery in 28 European countries.
Major grain producers France, Germany, Hungary and Spain accounted for 86% of the lost revenue, according to the ECIU.
Extreme heat is also expected to have a wider economic impact across the continent. Analysis from Triodos Bank found that this summer’s extreme weather could reduce the EU’s gross domestic product (GDP) by around 1% this year, or around €180bn.
4. UK yields of wheat, barley and oats are all due to drop in 2026
If current trends continue, the average yields for cereals and oilseeds will result in the UK’s worst harvest since detailed records began in 1984, according to ECIU.
Barley yields could fall by 15%, oats by 14% and wheat yields by 6% year-on-year, according to 2026 harvest surveys from the Agriculture and Horticulture Development Board, a non-departmental public body that provides agricultural data to the UK government.
ECIU said that, even if the situation improves, this year is still expected to be one of the five worst harvests on record. This means that four of the five worst harvests in the UK have occurred in the past decade.
Consumers will likely see higher prices and/or smaller vegetables in supermarkets as a result, Tim O’Malley, chairman of UK company Nationwide Produce, told BBC News in August.
Other crops, such as berries, have grown successfully in the extreme heat. But the Guardian noted fears this could dip later this year “as plants become exhausted from heavy cropping during the heatwave”.
5. Maize production in France is due to hit a four-decade low
France has been acutely affected by this summer’s extreme weather, with more than 7,300 excess deaths during heatwaves and a record number of weather stations recording temperatures of above 40C.
The country is the EU’s largest agricultural producer, but heat, drought and wildfires have affected many crops.
The chart below shows that maize production is set to drop by more than one-third (35%) year-on-year.
This could result in France’s lowest maize production since 1980, according to data from Agreste, the country’s agriculture ministry’s statistics service.
Due to the heat, “record-early” grape harvests have also been recorded in various parts of the nation since mid-July, reported Le Monde. In some cases, this means “smaller, less juicy grapes, which will yield less wine”, explained the newspaper.
6. Declines in EU grains since 2025
Overall in the EU, data and projections indicate declines in the output of cereal grains this year.
Cereal production is set to fall by 9% compared to 2025, according to the European Commission.
Just one year in the past decade – 2024 – recorded lower production levels.
Maize production is set to be particularly affected, with projections indicating a 13% drop, to 52Mt – the lowest level in the EU since 2007.
The post How this summer’s heat and drought impacted crops in Europe – in six charts appeared first on Carbon Brief.
How this summer’s heat and drought impacted crops in Europe – in six charts
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