Climate & Energy · Monday, 28 September 2026
Two days of rain flood Bangkok, and the city declares all 50 of its districts a disaster zone
Nearly 300mm of rain fell on Thailand's capital in 48 hours, more than its drains could carry away, and some canals kept rising after the rain eased. Also today: floods kill 19 in India and Nepal, Hurricane Nolo parks off Hawaii, and Russia expects to sell less gas.
nearly 300mm
of rain on Bangkok in the 48 hours to Saturday
about 30 million cubic metres of water, the governor said
50 of 50
Bangkok districts declared a disaster zone
to help officials respond quickly; not every part of the city was under water
545,000
people hit by floods in 25 provinces outside Bangkok by Sunday
at least eight people died across Thailand in ten days
about 3,000
people still in Bangkok's shelters on Sunday
about 4,200 had moved into 233 shelters by Saturday
The lead story — what happened
-
Nearly 300mm of rain fell on Bangkok, Thailand's capital, in the 48 hours to Saturday.
[1] [5] It flooded major roads and left some cars partly under water.[1] -
The rain fell almost without a break from Thursday afternoon to Saturday morning.
[10] [8] -
On Saturday Bangkok's governor, Chadchart Sittipunt, declared the city a disaster zone.
[6] All 50 districts were included so officials could act faster, though not every part of the city was under water.[3] -
The governor put the rain at about 30 million cubic metres of water, and said eastern Bangkok was hit hardest.
[5] [4] -
He said the city was pumping water out, but every canal was already full.
[4] People living near canals were told to move their belongings to higher ground.[6] -
Thailand's prime minister, Anutin Charnvirakul, said the endless rain had overwhelmed the drains in many areas.
[2] -
About 4,200 people moved into 233 city shelters by Saturday.
[1] About 3,000 were still there on Sunday.[2] -
The rain eased on Sunday, but some of the city's main canals were still rising, because water kept flowing in from nearby areas.
[2] Reuters reported floodwater receding that day, with some residents still stranded at home.[7] -
Outside Bangkok, more than 545,000 people in 25 provinces had been hit by floods by Sunday, Thailand's disaster department said.
[2] At least eight people died across Thailand in ten days.[2] -
A border province near Cambodia was also still badly flooded on Sunday.
[9] Bangkok's governor told residents to avoid needless travel, as several roads were still under water.[11] -
Thailand's cabinet gave civil servants in Bangkok and three nearby provinces Monday and Tuesday off, to cut travel.
[7] That could delay a court ruling on ballots from February's election, though the court has not said so.[7] -
Residents compared the water with 2011, when three months of floods killed hundreds of people across Thailand.
[4] [3]
Who is involved
-
Chadchart Sittipunt
Bangkok's governor; he declared the city a disaster zone and said every canal was full
-
Anutin Charnvirakul
Thailand's prime minister; he said the rain overwhelmed the drains and ordered help for people hit
-
Bangkok Metropolitan Administration
Bangkok's city government; it opened 233 shelters and raced to drain the canals
-
Department of Disaster Prevention and Mitigation
Thailand's national disaster agency; it counted 545,000 people hit by floods outside Bangkok
How it unfolded
-
Thu 24 Sep Rain starts in the afternoon and barely stops
[10] -
Sat 26 Sep Nearly 300mm in 48 hours; the city is declared a disaster zone
[1] [6] -
Sat night Rain eases, and the city speeds up draining its canals
[1] -
Sun 27 Sep About 3,000 still in shelters; 545,000 hit in 25 other provinces
[2] -
Mon 28 Sep Two days off begin for civil servants in Bangkok and three provinces
[7]
Where this points
Watch whether Bangkok's main canals fall this week as the low-pressure area behind the rain moves towards central Thailand, and whether the court keeps the date of its ruling on February's ballots.
What is pushing on the whole day
The bar and the word are our reading of how hard each one is pushing today. The arrow is where it is heading. The evidence is in the stories below.
Bangkok took nearly 300mm of rain in 48 hours.
Russia now expects to sell 5.3 million tonnes less gas by ship this year than it planned in May.
Germany will cut fuel tax by 17 cents a litre from 1 October, at a cost of 2.5 billion euros.
Zhejiang, a Chinese province, will let big batteries trade in its daily power market.
The rest of the day
13 more stories on this beat.
Each with its own sources. None of these is a link to the story above.
-
02
Floods kill 19 in India and Nepal
Heavy rain set off floods and landslides across northern India and Nepal, killing at least 19 people by the weekend, officials said.
[12] In India's Uttar Pradesh state, 15 people died in 48 hours, after a day with 19 times the normal rainfall.[12] India's Central Water Commission said 30 river gauges in seven states showed a severe situation.[12] The Ganga, the Kosi and other big rivers were above their danger marks.[12] In Nepal, a landslide buried a house in Baglung district, killing a woman and three children as they slept.[12] Why it matters — Nepal warned of flash floods in 49 of its 77 districts, a month after floods there killed more than 1,450 people.
[12] Floodwater on the Rahuganga River also damaged a 40-megawatt hydropower plant.[12] -
03
Hurricane Nolo parks off Hawaii
Hurricane Nolo, a strong Category 2 storm with winds of 105mph, sat still about 145 miles south of Hawaii's Big Island on Saturday morning, The Washington Post reported.
[13] The Post said that standing still is what made Nolo a serious flood threat to the island.[13] The Big Island took 20 to 30 inches of rain from Hurricane Lala only last month.[13] Why it matters — The Post said a big hurricane was stalling near the island once again.
[13] In Bangkok this week the rain also stayed over one place, for 48 hours, and flooded the city.[1] -
04
Russia expects to sell less gas
Russia's economy ministry now expects the country to produce and export less gas this year than it forecast in May, a draft government paper seen by Reuters shows.
[14] Output is put at 683.1 billion cubic metres, 5.3 billion less than in May, but still more than in 2025.[14] Gas cooled into liquid and sent by ship is forecast at 35 million tonnes, 5.3 million less than expected.[14] The European Union plans to stop buying Russian gas from next year.[14] Pipeline peak, 2018-19180 bn cubic metres202518 bn cubic metresRussian gas to Europe by Reuters' count: about 180 billion cubic metres a year by pipe at the peak, and 18 billion last year. Why it matters — Russia sent Europe 18 billion cubic metres of gas in 2025, the least since the mid-1970s, by Reuters' count.
[14] Russia's economy ministry expects China to pay about $248 per thousand cubic metres this year, against an average of about $403 from buyers outside the former Soviet Union.[14] -
05
European governments pay toward fuel
Seven of the ten countries doing most to soften high fuel prices since the Iran war began are in the European Union.
[15] That is the finding of a new report by the OECD, a group of mostly rich countries.[15] France added a 450 million euro package, with 100 euro payments for 5.5 million workers who drive far to work.[15] Germany will cut fuel tax by 17 cents a litre from 1 October, at a cost of 2.5 billion euros.[15] Italy put off pulling down its coal power plants.[15] Why it matters — The EU imports nearly all its oil and 85% of its gas.
[15] Transport & Environment, a campaign group, says Europeans are paying an extra 203 million euros a day for diesel alone.[15] -
06
A flood watch for five countries loses its money
US foreign aid cuts in 2025 shut down SERVIR, a programme that used satellites to help Afghanistan, Bangladesh, Myanmar, Nepal and Pakistan watch for floods and landslides, AP reports.
[16] It was run by USAID, NASA and ICIMOD, a mountain research centre in Kathmandu.[16] Aid from the rich countries in the OECD fell 23% in 2025, the biggest drop on record.[16] ActionAid, a campaign group, says poorer countries pay about 225 times more in debt than they get in climate grants.[16] Why it matters — The US State Department says SERVIR's tools still run through ICIMOD.
[16] ICIMOD's Neha Rai says the cuts will be felt for years, and have hurt the sharing of flood information between countries.[16] -
07
Russia sends more diesel to Central Asia
Russia more than doubled its diesel shipments to Kazakhstan, Kyrgyzstan, Mongolia and Tajikistan in August, to over 370,000 tonnes, traders told Reuters.
[17] It did so while banning diesel exports to most other countries until the end of September.[17] Ukrainian drone attacks on Russian refineries have caused fuel shortages and higher prices inside Russia.[17] Diesel delivered to Russia's own market fell to 4.7 million tonnes in August, from 5.0 million in July.[17] July124,000 tonnesAugust215,000 tonnesRussian diesel shipped to Mongolia, by traders' count. It rose by about three quarters in a month while Russia banned most other exports. Why it matters — Mongolia got about 215,000 tonnes, up from 124,000 in July, and takes about half of the diesel Russia sends to Central Asia and Afghanistan.
[17] Deals between governments let that diesel through the ban.[17] -
08
Canada says it could sell gas to France
Canada could sell France gas cooled into liquid and shipped from its Pacific coast, Canada's foreign minister, Anita Anand, told Reuters at the United Nations on 21 September.
[18] She spoke a day after the two countries' leaders met and talked about energy.[18] France's President Emmanuel Macron has been asking for closer energy ties while the war in the Middle East disrupts supplies.[18] Uniper, a German state-controlled energy company, signed a 20-year deal for Canadian gas at the end of July.[18] Why it matters — Canada is the world's fifth-largest gas producer, and LNG Canada in British Columbia, led by Shell, is North America's first gas export plant facing the Pacific.
[18] Anand called a partnership with France quite conceivable.[18] -
09
Malaysia fixes a cheaper grid fee for company solar
Malaysia's energy ministry, PETRA, set a fixed fee of 0.14 ringgit a kilowatt-hour for solar farms that send steady power to companies over the national grid, down from 0.20.
[19] To count as steady, a farm needs batteries that can supply half its output for four hours.[19] Deals must run at least 10 years, and farms must be working by the end of 2028.[19] Those taking part had asked for fees they could predict, to help them borrow.[19] 20240.25 ringgit per kWh20250.2 ringgit per kWhNow, fixed0.14 ringgit per kWhMalaysia's grid fee for steady solar power sold to companies. The new fixed rate is for farms running by the end of 2028. Why it matters — PETRA says projects totalling 3,148 megawatts have signed up since 2024, but not how much of that is built.
[19] Data centres are part of why Malaysia needs more power.[19] -
10
A Chinese province lets big batteries trade
The Chinese province of Zhejiang will let big stand-alone batteries on its grid trade in its daily electricity market.
[20] The rules came in a notice on 23 September from the local office of China's energy regulator and two provincial bodies.[20] Each day a battery can choose to sell power, or to sell help keeping the grid steady.[20] The notice lists 40 projects, 2.54 gigawatts in all, and 28 are already running.[20] From January 2027 the province plans to have them bid both a price and an amount.[20] Why it matters — Batteries on older contracts may leave them to join the market.
[20] It follows China's 2025 decision to drop a rule that made new solar and wind farms add batteries.[20] -
11
Portugal delays its battery auction
Portugal postponed an auction for grid batteries by several weeks, after taking comments on its terms; it had been set for 14 September.
[21] The batteries must be able to run for at least four hours, so the grid connections on offer mean at least 3 gigawatt-hours of storage.[21] A second auction is for renewable power plants with batteries attached.[21] Towns hosting stand-alone batteries would get 30% of the auction money, and 70% for plants with batteries attached.[21] Why it matters — Portugal plans 6.9 gigawatts of storage by 2030, in a strategy still open for comment.
[21] Winners pay their own connection costs, and may be held back for up to 750 hours a year when lines are full.[21] -
12
ACEN gives up two Philippine solar farms
ACEN, which has about 7.5 gigawatts of renewable power built or under construction, gave up government contracts for two planned solar farms in the Philippines, it told the stock exchange on 18 September.
[22] The Pagbilao site in Quezon province hit problems buying land, and the Botolan site in Zambales could not get access.[22] Together they were listed at about 456 megawatts.[22] Neither had reached a final decision to build.[22] Why it matters — The Philippines' energy department cancelled 84 renewable energy contracts, about 5,372 megawatts, in 2025 for missing work plans and other rules.
[22] Its energy and farm departments plan to mark out land for solar, apart from land for food, in an agreement due in October.[22] -
13
A weak monsoon gives western India more sun
A weak monsoon brought more sun than usual to north-western and southern India and to Pakistan this summer, an analysis by Solcast, a company that tracks clouds by satellite, found.
[23] It says the weak monsoon fits with this year's strong El Nino.[23] Its early estimate puts sunlight there about 5% above normal from June to September, and up to 10% above in August.[23] Jodhpur, near Rajasthan's solar farms, is on track for its second-sunniest monsoon since 2007.[23] August storms cut sunlight by 20-30% in eastern and central India.[23] Why it matters — Most of India's big solar farms are in the sunnier regions, so the cloudy east cut national solar output less than those numbers suggest.
[23] Solcast sells this kind of data to solar farm owners.[23] -
14
A plan for 150 million more solar roofs
The Global Covenant of Mayors for Climate and Energy and the Global Solar Council want another 150 million solar installations by 2030.
[24] They set out the goal in an opinion piece for Reuters on 22 September.[24] They call it the 300 Million Solar Homes Initiative.[24] They cite the International Energy Agency's estimate that about 150 million buildings will have rooftop solar by the end of this year.[24] Households and businesses in Pakistan fitted 27 gigawatts in two years.[24] Why it matters — They argue that city halls decide how fast permits come, so national solar plans stall without them.
[24] Close to 40% of Australian households already have solar panels, they write.[24]
A slow storm can flood more than a strong one
A flood comes from how much rain lands, and that depends on how many hours the rain stays over one place as much as on how hard it falls.
The twist
Bangkok's rain averaged only about 6mm an hour, and it still flooded all 50 districts, because it kept falling for 48 hours.
The picture
How it works
- Rain falls at some rate: so many millimetres an hour
- The water on the ground is that rate times the hours it keeps falling
- A storm's category is set by its wind, not by how long it stays
- A storm that stops moving keeps adding water to the same streets
- So a weaker storm that stays can flood more than a stronger one that passes
The same force, elsewhere today
Where this chain is also running, in today's other stories.
-
Hurricane Nolo parks off Hawaii
Nolo was a Category 2 storm, and the Post said its standing still south of the Big Island is what made it a serious flood threat.
-
Portugal delays its battery auction
Portugal's batteries must keep running for at least four hours, so the auction counts how long each one lasts, not only how much power it gives at once.
-
Malaysia fixes a cheaper grid fee for company solar
To pay the lower fee, a solar farm needs batteries that hold half its output for four hours in a row, so the rule measures hours as well as size.
Where you've seen this
Noise at work
hearing damage depends on how loud a sound is and how many hours a day someone hears it
Sunburn
an afternoon of mild sun can burn skin that a few minutes of strong sun would not
A slow leak
a drip left all night fills a bucket that a quick splash never would
The catch
Strength still matters: when rain is fierce enough, a single day can do it, as Uttar Pradesh's day of 19 times its normal rain showed.
And the whole of it
Each person in Bangkok met this rain one hour at a time, on one street. The canals took in the rain of all 48 hours, from the whole city, and by Saturday the governor said every canal was full.
What is really going on
Bangkok flooded because nearly 300mm of rain fell in two days, more than its drains could carry away, and some canals kept rising after the rain eased.
Who gains
-
Canada's gas exporters
— Europe wants more sellers while the Middle East war disrupts supply, and Germany's Uniper signed a 20-year deal for Canadian gas in July.
[18] -
Buyers of Russian diesel in Central Asia
— Deals between governments kept their diesel coming while Russia banned sales to most countries, and Mongolia's rose to about 215,000 tonnes in August.
[17] -
Solar farm owners in north-western India and Pakistan's Punjab
— A weak monsoon gave their panels about 5% more sunlight than normal from June to September.
[23] -
Malaysian solar developers who finish by 2028
— They lock in a fixed grid fee of 0.14 ringgit a kilowatt-hour, down from 0.20, if they add four hours of batteries.
[19] -
French workers with long drives to work
— 5.5 million of them can now claim 100 euros toward fuel until the end of the year.
[15]
Who pays
-
People living near Bangkok's canals and in its low suburbs
— The canals filled, and water kept flowing in from nearby areas after the rain eased, so these streets stayed under water.
[4] [2] -
Russians buying diesel at home
— Diesel delivered to Russia's own market fell to 4.7 million tonnes in August from 5.0 million in July, while exports to Central Asia doubled.
[17] -
Communities in the Himalayas
— SERVIR's programmes for landslide forecasting and daily flood monitoring ended when US aid was cut in 2025.
[16] -
Poorer countries hit by climate disasters
— They pay about 225 times more in debt than they receive in climate grants, ActionAid says.
[16] -
German taxpayers
— Renewing the cut in fuel tax from 1 October costs 2.5 billion euros.
[15]
What nobody knows yet
Open questions from across today’s stories — ours included.
-
01
How many people Thailand's floods have reached.
AP reported more than 84,000 people in 21 provinces on Saturday. By Sunday the national disaster department counted more than 545,000 in 25 provinces outside Bangkok, and no final count has been given.
[3] [2] -
02
How many people have died.
AP reported at least eight deaths across Thailand in ten days, and the BBC said none had been reported in Bangkok itself by Saturday. Neither gave a final count.
[2] [4] -
03
Whether the holiday delays the court ruling on February's election ballots.
Reuters says it could, and the court has not said whether it will move the date.
[7] -
04
How much rain Hurricane Nolo dropped on Hawaii's Big Island.
Our last report has the storm parked 145 miles south of the island on Saturday morning, with serious flooding called likely but not yet measured.
[13] -
05
How much flood monitoring in South Asia survives the US aid cuts.
The US State Department says SERVIR's tools remain active through ICIMOD. AP reports that its landslide forecasting and daily flood monitoring ended, and ICIMOD's Neha Rai says the cuts will be felt for years.
[16] -
06
How much of Malaysia's 3,148 megawatts of company solar is actually built.
Malaysia's ministry gave the registered total only, with no company names and no count of what is being built or running.
[19] -
07
Whether Canada and France turn talk into a gas deal.
Canada's foreign minister called a partnership quite conceivable, but gave no amount, price or date.
[18] -
08
When Portugal's battery auction opens.
Portugal's government has said only that it moves back by several weeks, and the final terms are not yet published.
[21] -
09
Whether Russia cuts its gas forecasts again.
Russia's economy ministry lowered them between May and September, and the European Union still plans to stop buying Russian gas next year.
[14]
Floodwater in Bangkok receded on Sunday as the rain eased and the city worked to drain its canals.
Also true today
- Most of India's big solar farms sit in the regions where this monsoon brought about 5% more sunlight than usual. Around Jodhpur it is on track to be the second-sunniest monsoon since 2007.
- Malaysia cut its fixed grid fee for steady solar power sold to companies to 0.14 ringgit a kilowatt-hour, from 0.20.
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