Welcome to Carbon Brief’s Cropped.
We handpick and explain the most important stories at the intersection of climate, land, food and nature over the past fortnight.
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Key developments
Amazon affairs
DRY SPELL: Climate change made last year’s agricultural drought in the Amazon around 30 times more likely to occur, according to a new rapid attribution study covered by Mongabay. The El Niño climate pattern “played a much smaller role” than many had assumed, the outlet said. World Weather Attribution scientists analysed data from the Amazon region between June and December last year, finding that both El Niño and climate change “contributed to reduced rainfall” during these months. But climate change “also led to high temperatures, significantly increasing water evaporation from plants and soils”, the outlet added. The report authors “predict that dry spells in the Amazon will become more frequent and harsher” under continued warming, Mongabay said.
CRIME COOPERATION: A $1.8m Amazon rainforest security centre will open in Manaus, Brazil in the coming months, Climate Home News reported. The centre is financed through the Amazon Fund and will “bring together Amazon nations in policing the rainforest, sharing intelligence and chasing criminals”, the outlet said. Climate Home News quoted Humberto Freire, head of the Brazil federal police’s environment and Amazon department, who said the centre will “fight drug trafficking and the smuggling of timber, fish and exotic animals, as well as deforestation and other environmental crimes”. It will also focus on illegal gold mining on Indigenous land, the outlet said.
LAND CONFLICT: Meanwhile, Brazil’s president, Luiz Inácio Lula da Silva, said the federal government will “help resolve” a land conflict between Indigenous people and farmers that led to the fatal shooting of a tribal leader, Reuters reported. Maria Fatima de Andrade was shot and killed after 200 land owners tried to “evict an Indigenous community” from a farm in the state of Bahia and take the land, which is claimed by the Pataxó tribe, the newswire said. Another leader was also shot and brought to hospital, Reuters said, noting that the incident “underlines years of tensions between Brazil’s Indigenous peoples and agricultural settlers over land rights”. The country’s minister for Indigenous peoples, Sonia Guajajara, said the attack was “unacceptable”, the newswire added.
Offsets scrutinised
EU BAN: Labelling products and services as “climate neutral” or “climate positive” based on the use of carbon offsets will be banned in the EU from 2026, the Guardian reported. Carbon offsets involve a polluting entity, such as an airline, paying for emissions to be reduced elsewhere, such as by preventing deforestation. Companies often use carbon-offsetting to make claims that their products are “net-zero” or “environmentally friendly”, but evidence – previously set out in detail by Carbon Brief – shows these can be exaggerated or misleading. On 17 January, members of the European parliament voted to outlaw the use of terms such as “environmentally friendly”, “natural”, “biodegradable”, “climate neutral” or “eco” without evidence. The European parliament also introduced a total ban on using carbon-offsetting to back up such claims, the Guardian reported. The NGO Carbon Market Watch called the move “a big step towards more honest commercial practices and more informed European consumers”.
GUYANA CREDITS: Elsewhere, the Financial Times reported on Guyana’s plans to generate $3bn from forest carbon offset schemes by the end of the decade. Forests currently cover 85% of the South American country’s land surface, the FT said, with the government estimating they could generate credits representing 19.5bn tonnes of CO2 – more than the annual emissions of China. However, offsetting plans could be put at risk by conflict with neighbouring Venezuela, which has threatened to annex more than half of Guyana’s territory, the FT said. It added that most of Guyana’s forests are in the mineral-rich region of Essequibo, “a tract of Amazon jungle that would be a prime target for Venezuelan loggers and miners in the event of a takeover”.
COOKSTOVE CONTROVERSY: Finally, Heatmap was among several publications covering a new study finding that carbon offset schemes using so-called “clean” cookstoves are “kind of bogus”. Clean cookstove schemes involve the distribution of more efficient cooking equipment, with the goal of cutting reliance on traditional fuels, such as firewood – leading to lower emissions. The study from researchers at the University of California, Berkeley, found that cookstove projects have generated, on average, nine times more carbon credits than they should have, Heatmap reported. The research was published in the journal Nature Sustainability.
Spotlight
French farmers and the far right
In this spotlight, Carbon Brief looks at the ongoing EU farmer protests and how far-right political groups could latch on to the outrage ahead of the European parliament elections in June.
Farmers have used tractors to blockade the streets of Berlin, Brussels and Bucharest in recent weeks. Farmers across the EU have been protesting against “competition from cheaper imports”, tightening environmental rules and rising production costs, according to Reuters.
This week, the French farmer protests escalated. Hundreds of tractors blocked off major roads into the country’s capital in what has been dubbed the “siege of Paris” by many media outlets, including BBC News. President Emmanuel Macron is “scrambling to end an escalating political and social crisis”, the Times said.
According to Le Monde, farmers are raising issues around “pesticides, free-trade agreements and wages”. France is an EU agricultural powerhouse, producing huge amounts of meat, dairy and wheat each year.
The nation’s newly appointed prime minister, Gabriel Attal, announced some concessions to farmers, including simplified technical procedures and a “progressive end to diesel fuel taxes for farm vehicles”, the Associated Press reported.
But the two main farmers’ unions said these measures did not go far enough and vowed to continue the protests.
The protests are the “first big test” of Attal’s leadership, Bloomberg noted. And, just months out from the European parliament elections, Euractiv said they are also the “first major political test for EU election candidates in France”.
Ahead of these elections, Politico said that right-wing parties in countries – such as France, Italy, the Netherlands and Germany – are “piggybacking on farmers’ noisy outrage”. Recent polling has suggested that there could be a “sharp turn to the right” in the June vote, Deutsche Welle reported.
Dr Gilles Ivaldi, a politics researcher at Sciences Po who has examined the far right in Europe, said that right-wing groups may use the farmer protests to “boost their electoral support” in France and elsewhere. He told Carbon Brief:
“What we see, particularly in France, is that the far right is seeking to capitalise on public discontent with the impact of the green transition, not only among farmers but also in social groups affected most by the economic cost of environmental policies.”
He said the French far right is “clearly trying to instrumentalise” the farmer protests to “mobilise against the government and the EU”. Sky News said the protests “are being seized upon by various groups”, including Marine Le Pen’s right-wing Rassemblement National party.
But Ivaldi noted that the far right’s EU election focus will mostly remain on topics such as immigration, the economy, the future of the EU and the bloc’s Green Deal. The “main factors” behind a potential right-wing surge will not come from agriculture alone. He added:
“Far-right parties are currently capitalising on the economic crisis and rise in prices, on the immigration issue, particularly growing concerns about the massive influx of refugees in Germany and, more broadly, the many anxieties caused by the war in Ukraine and geopolitical instability.”
News and views
LET’S EAT BALANCED’: A £4m advertising campaign aimed at convincing young people to eat more meat and dairy has been released in the UK, with support from the government, DeSmog reported. Timed to coincide with Veganuary (a popular challenge where people go vegan for January), the “Let’s Eat Balanced” campaign – voiced by British comedian Richard Ayoade – targets cinema screens, TVs, newspapers, social media channels and major supermarkets, DeSmog said. The campaign attempts to communicate the health benefits of eating meat and dairy, which “flies in the face of science”, experts told DeSmog. It was developed by the PR agency Ogilvy, which counts BP as a former client, and is run by the Agriculture and Horticulture Development Board, a UK government-appointed board funded by farmers’ levies.
AT SEA: Chile and Palau became the first countries to officially sign off on the High Seas Treaty, Euronews Green reported. Palau was the first to ratify the treaty governing the sustainable use and conservation of international waters since it was agreed last March, the outlet said. The Chilean senate “unanimously” voted in favour of ratification, which will become official “once it is published in the government’s official journal”. The outlet quoted Rebecca Hubbard, director of the High Seas Alliance, who said she hopes Palau “inspires” others to “redouble their efforts to ratify the treaty without delay so that it can enter force as soon as possible” once 60 nations sign off.
COLOMBIA FIRES: Colombia, due to host the biodiversity summit COP16 later this year, is currently battling intense fires in the mountains around the capital city of Bogotá, as dozens of other blazes have burned across the country, the New York Times reported. The president, Gustavo Petro, has declared a national disaster and asked for international help fighting the fires amid the country’s hottest January in three decades, according to the publication. It comes after the UN Convention on Biological Diversity announced that six cities in Colombia have expressed interest in hosting COP16. It is not yet clear if the fire emergency could affect Colombia’s ability to host the summit.
TAKE OFF: The world’s first plant using ethanol partly made with corn to produce “sustainable aviation fuel” opened in the US, Bloomberg reported. The $200m facility in Georgia plans to use the ethanol made from “American-grown corn, as well as from advanced technologies”, the outlet said. The facility’s opening spurred industry groups in Iowa – the US state that produces the most corn – to warn farmers and ethanol producers that they risk “missing out on the chance to significantly profit from the developing market for sustainable aviation fuel”, the outlet said. A 2022 study found that corn-based ethanol is likely more carbon-intensive overall than petrol, Reuters previously reported.
HUNT FOR POWER: Climate Home News investigated lithium mining in Zimbabwe, where Chinese companies have “flocked” to secure supplies of the lightweight metal, which is crucial for electric vehicle batteries. Lithium mining “brought the promise of jobs and a better life” for some, the piece outlined, but the country’s “poor progress on establishing robust resource governance” could prevent local communities from “seeing any of the benefits”. The country’s president, Emmerson Mnangagwa, “aspires to turn Zimbabwe into a battery manufacturing hub” to help “catapult the country into an upper-middle-income economy by 2030”, the outlet said.
CAMBODIA DEFORESTATION: A Mongabay investigation alleged that a vast forested wildlife sanctuary in Cambodia is being put at risk by mining concessions granted by the government to a “timber baron” who has previously been sanctioned over corruption in relation to natural resource extraction. In 2023, the Cambodian government announced a ban on extractive practices inside the Prey Lang Wildlife Sanctuary, a “sprawling carbon sink” home to 250,000 Indigenous peoples, according to Mongabay. However, the government made an exemption for companies that had already been awarded contracts, it added. This included the mining company of Try Pheap, “a powerful tycoon and adviser to the previous prime minister”, Mongabay said. Mongabay was unable to make contact with the Cambodian government or representatives of Try Pheap, despite repeated attempts.
Watch, read, listen
TREE GRIEF: Al Jazeera spoke to Palestinians who are grieving the loss of their olive trees, which have long been a symbol of the Palestinian spirit, amid Israel’s assault on Gaza.
HIT THE WAVES: The Climate Question, a BBC podcast, looked towards Northern Ireland and South Korea to see why tidal power is not more commonly used in renewable energy.
TINY WILD CAT: A long read by Mongabay explored how conservationists are working to save the guina, the Americas’ smallest wild cat species, native to Chile and Argentina.
‘BLACK MOSS’: The South China Morning Post examined the Chinese new year staple “fat choy” and how its overharvesting has turned parts of China “into desert”.
New science
Atmospheric CO2 emissions and ocean acidification from bottom-trawling
Frontiers in Marine Science
Bottom-trawling – the fishing practice where nets are scraped along the seabed – could have caused the release of up to 370m tonnes of CO2 between 1996 and 2020, a new study found. As well as being harmful for wildlife living near the bottom of the ocean, bottom-trawling disturbs carbon that was previously locked up for millenia, the researchers said. They used a combination of satellite data tracking fishing events and carbon cycling modelling to examine how bottom-trawling could cause CO2 emissions. The researchers also found that, in heavily trawled seas, the volume of carbon released is likely to be enough to drive ocean acidification – known to be harmful to a range of ocean wildlife, from coral reefs to fish.
Multi-decadal trends of low-clouds at the tropical montane cloud forests
Ecological Indicators
New research suggested that low-cloud cover is declining over tropical montane cloud forests because of climate change, posing an existential threat to these unique mountain ecosystems. The study used climate data to study changes to the proportion of sky covered by cloud cover and other climate variables in 521 tropical montane cloud forests across the world from 1997 to 2020. The researchers found that proportional cloud cover has declined at 70% of these sites, with cloud forests in central and South America and south-east Asia most affected. Decreases in cloud cover were associated with increases in surface temperature and decreases in soil moisture, “revealing that the tropical montane cloud forests’ climate is changing”, the researchers added.
Livestock increasingly drove global agricultural emissions growth from 1910-2015
Environmental Research Letters
Emissions from agriculture in 2015 were more than three times bigger than they were around one century prior, a study found. Scientists developed a dataset of global emissions from the agriculture sector across 10 time periods between 1910 and 2015. They found that agriculture emissions from livestock, soil management and fossil energy inputs “increased continuously” during this time by an overall factor of 3.5, with methane accounting for the majority of these emissions. The study said that reduced emissions intensity, especially for livestock, “partly counterbalanced” the overall rise in emissions to varying degrees. The researchers wrote that the findings “underscore the large potential of reducing livestock production and consumption for mitigating the climate impacts of agriculture”.
In the diary
- 6 February: European Commission to publish 2040 emissions-reduction target recommendations
- 12-17 February: Fourteenth meeting of the Conference of the Parties to the Convention on the Conservation of Migratory Species of Wild Animals | Samarkand, Uzbekistan
- 14 February: Indonesian general election
Cropped is researched and written by Dr Giuliana Viglione, Aruna Chandrasekhar, Daisy Dunne, Orla Dwyer and Yanine Quiroz. Please send tips and feedback to cropped@carbonbrief.org
The post Cropped 31 January 2024: French farmers and the far right; Amazon affairs; EU offsetting ban appeared first on Carbon Brief.
Cropped 31 January 2024: French farmers and the far right; Amazon affairs; EU offsetting ban
The UK is pioneering the use of “super batteries” that can store energy for long periods, smoothing the output from wind and solar power as the country moves towards net-zero.
It is aiming to build “long-duration energy storage” (LDES) that fills up when supplies are plentiful, to help cover the gaps when the wind does not blow and the sun does not shine.
These periods can last for days or even weeks – sometimes referred to as “dunkelflaute”, a German word meaning “dark doldrums” – whereas the current batteries on the electricity system only last a matter of hours.
The nation’s energy regulator Ofgem has now identified 16 LDES projects that it is “minded to” support under a new “cap-and-floor scheme”.
The technologies selected can be used to store energy for long periods in the form of gravity, chemical processes or electrical charge.
These include pumped hydro, which has dominated long-term storage in the past, through to large lithium-ion batteries, “flow batteries” with novel chemistry and compressed-air storage.
The use of these technologies is expected to cut energy system costs in the UK by more than £24bn between 2030 and 2050.
This Q&A looks at what LDES means and where it can come from, why it is needed and what the UK and others are doing to support its use.
What is LDES?
LDES is a broad category of technologies, with some variation in definition.
The UK government defines it as technologies that can store energy for anywhere from four hours up to years. Ofgem uses a slightly different threshold of eight hours and upwards.
Sir Chris Llewellyn Smith, emeritus professor of physics at the University of Oxford and lead author of a Royal Society report on large-scale electricity storage, tells Carbon Brief:
“[The Department of Energy Storage and Net-Zero] (DESNZ) seems to describe it as including things which we would regard as some short duration or medium duration [storage]. It’s a big confusion…For us, long duration is stuff that can last not just into seasons, but into years and into decades.”
LDES can be used to support several different aspects of the electricity system, including the integration of variable renewable energy.
Currently in the UK, there is 2.8 gigawatts (GW) of LDES, made up of four pumped-hydro energy storage assets in Scotland and Wales.
(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.)
The largest of these existing sites is the Dinorwig power station in North Wales, sometimes referred to as the “electric mountain”. This is a 1,728 megawatt (MW) station opened in the 1980s, which is used to manage short-term surges in electricity demand.
For example, during England’s football World Cup match against the Democratic Republic of Congo on 1 July 2026, electricity demand rose by around 1.2GW at half-time and 1.7GW at full-time. This is equivalent to the total electricity demand for the cities of Glasgow and Leeds, combined.
Pumped storage, alongside batteries, has been used to keep the electricity system balanced during such moments by providing enough electricity to keep the system secure very quickly.
As the UK’s electricity system becomes increasingly dominated by variable renewables, however, the need for LDES to manage peaks and troughs of generation is growing.
George Martin, principal for power system modelling at analytics company LCP Delta, tells Carbon Brief that wind power creates a particular need for LDES. He says:
“[LDES is] really important for the system, particularly in a wind-driven system. You get more peaks and troughs in your renewable output and, [while] short duration [storage] can obviously help with that, with things like ‘dunkelflaute’, long-duration storage is what is needed.”
As such, the UK is working to expand the capacity and duration of storage available through LDES, as well as the range of technologies this system is based on.
For example, in May 2026 the UK’s largest vanadium “flow battery” site opened, co-located with a 3MW solar farm in Uckfield, East Sussex. (A flow battery stores energy in liquid chemical mixtures that are pumped between tanks, via an electrochemical cell.)
The Uckfield site consists of 90 vanadium flow batteries, which can be used to store 21 megawatt-hours (MWh) of electricity. This is equivalent to seven hours of peak output from the attached solar farm and is roughly enough electricity to power 3,000 homes for a day.
The batteries can be used to store surplus daytime solar generation, which can then be used in the evening and overnight.
Other LDES technologies with a longer storage capacity could be used to similarly help manage power supply and demand, but over weeks, months or seasons. This could include compressed-air energy storage, hydrogen storage and others.
The diversity of LDES technologies reflects the range of roles it is expected to play in the electricity system in the UK. This could be meeting short-term surges, helping to utilise surplus renewable energy generation or providing longer-term flexibility.
What types of LDES are available?
There are numerous types of energy storage technology, although most fall into four main categories: mechanical; thermal; chemical; and electrochemical.
For example, a pumped-hydro project uses surplus energy to pump water uphill to a reservoir. The mechanical energy is released when the water flows down through a turbine.
Thermal storage could be a tank of gravel that is heated up, then later used to warm up water. Electrochemical storage is familiar in the form of batteries.
Finally, chemical storage relates to energy stored in molecular bonds, for example, making hydrogen from water. (Similarly, the energy in fossil fuels, which is ultimately derived from the sun, is a form of chemical storage.)
A key consideration for each LDES technology is the amount of energy it can store, measured in watt-hours (Wh). For example, a 1MW battery with four hours of storage contains 4MWh of electricity. It can therefore be used to deliver 1MW continuously for up to four hours.
Another consideration is whether the energy can be stored for long periods before use – and whether it is economic to do so.
In recent years in the UK, battery energy storage – predominantly lithium-ion batteries with a duration of one to four hours – has dominated the storage sector. The lithium battery sector in the UK has grown from almost nothing in 2015 to more than 6GW today.
However, as lithium-ion batteries have only tended to hold a few hours of storage, they cannot help support the grid during longer periods of low renewable energy generation.
Technologies such as vanadium-redox flow batteries, compressed-air energy storage or hydrogen salt-cavern storage could potentially help manage supply and demand over days, weeks or even years.
A range of LDES technology options are shown in the table below.
| Technology | Type | Duration | How does it work? |
| Gravity storage | Mechanical | Hours | A heavy object is lifted, storing kinetic energy that can be turned back into electrical energy by a generator. |
| Lithium-ion batteries | Electrochemical | Hours | Lithium ions move between a negative anode and a positive cathode through an electrolyte within the battery. |
| Liquid air | Mechanical | Hours to days | Air is compressed and cooled until it becomes a liquid. When the air becomes a gas again, it drives a turbine. |
| Vanadium flow | Electrochemical | Hours to days | Liquid chemical mixtures are pumped between tanks, via an electrochemical cell. |
| Compressed air | Mechanical | Hours to days | Air is compressed to a high pressure and stored in underground geological formations, such as salt caverns or disused oil and gas wells. |
| Pumped hydro | Mechanical | Hours to days | Water is pumped up a hill to a reservoir and then released to drive a turbine. |
| Hydrogen salt cavern storage | Chemical | Seasons | Surplus energy is used to make hydrogen from water. The hydrogen is then stored in underground salt caverns, before being burned as fuel. |
| Thermal energy storage | Thermal | Seasons | A material such as gravel is heated with surplus energy and kept in an insulated store, before being used to warm water. |
Each option has specific advantages and disadvantages; for example, while pumped hydro storage has a high upfront cost, it has a long lifespan of over 50 years. As such, its capital cost per kilowatt hour (kWh) is lower than many other storage options over time.
(Pumped hydro is the most established LDES technology in the world, but no new projects have been built in the UK since the 1980s.)
While it has historically been a short-duration form of storage, some lithium-ion batteries can now store power for much longer chunks of time.
Lithium-based grid batteries now often offer 8-12 hours of storage and – as shown in the table above – even longer durations are possible
As Ed Porter, director for Europe at data company Modo Energy, quipped on LinkedIn following the cap-and-floor scheme results:
“Lithium [is] going far beyond 8 hours; that debate must surely be dead now.”
While even 12 hours is of limited use for gaps in generation of days, weeks or seasons, there are numerous benefits to lithium-ion batteries in comparison to other LDES technologies. For example, the cost of these batteries has fallen by an average of 20% per year over the last decade.
Given the variation in technologies – including scale, lifespan, commercial readiness and aspects such as necessary geography – comparing the costs of each technology is challenging.
However, utilising a diverse set of storage technologies is expected to be particularly beneficial for electricity systems, according to experts.
Julia Souder, CEO of industry group the LDES Council, tells Carbon Brief:
“The UK is leading the charge on technology diversity. We’re witnessing matching different LDES solutions to the real differences in market structure and country needs.
“But make no mistake: a handful of LDES technologies will do the heavy lifting over the next decade. We’re seeing that play out in which technologies are winning through the UK government’s new cap-and-floor mechanism for long duration storage.”
How much LDES will the UK need?
LDES is expected to be a key component of the UK’s electricity system in the future, particularly as it moves away from easily stored and dispatched fossil fuels such as gas.
The government has set a target of “clean power by 2030”, in the lead-up to the wider net-zero by 2050 goal.
In 2024, the Labour administration set out an “action plan” for reaching the 2030 target, which included substantial increases to electricity generation technologies.
This included setting widely discussed targets to double offshore wind, triple onshore wind and quadruple solar capacity by 2030, alongside rebuilding the UK’s nuclear fleet.
But the action plan also set a less well-known target for 4-6GW of LDES, to help balance this renewables-dominated electricity mix. This is in addition to 23-27GW of short-duration battery energy storage, new interconnectors and a big push to develop consumer-led flexibility.
There is also a major expansion of LDES to 3.8-5.3GW by 2030 in the most recent “future energy scenarios” report from the National Electricity System Operator (Neso), as shown in the chart below.
Neso’s pathways show LDES rising to between 16.6GW and 13.2GW by 2050, mainly dependent on how hydrogen is used in the electricity system.
The Neso report notes that few LDES schemes are likely to come online before 2030, due to the long project development and planning times, as well as high capital expenditures.
Which types of LDES is the UK planning to use?
While the UK is pursuing a diverse range of LDES, certain technologies are likely to make up the bulk of LDES in the next decade or so.
This is evident in the technologies that have bid successfully into the UK government’s new “cap-and-floor” mechanism for LDES.
The scheme was first announced in 2024 and is designed to guarantee a minimum level of revenue for energy storage operators – the “floor” – as well as to put a limit on profits via the “cap”.
(The mechanism will be funded through electricity bills. However, Ofgem expects it to be broadly cost-neutral over time.)
Similar mechanisms have been used to support the development of other technologies in the UK, in particular those with high upfront costs, such as interconnectors. Ultimately, it minimises the risk for developers by guaranteeing a certain level of future revenue.
In 2025, 171 LDES projects with a total capacity of 52.6GW applied to enter the cap and floor scheme, which is administered by Ofgem. Of these, 77 projects (28.7GW) were deemed eligible to enter a second “assessment” phase.
These were made up of nine different technologies, as shown in the figure below. However, lithium-ion batteries dominated the process, making up more than 20GW of the 29GW total.
No pure vanadium-flow batteries, liquid-air energy storage, iron-air batteries, sodium-sulphur batteries or hydrogen batteries were deemed eligible for the second phase.
(Conventional hydrogen storage was not eligible to bid into the process either, but could be supported through other means. The government is expected to release an updated hydrogen strategy later in 2026.)
Ultimately, Ofgem announced in June 2026 that it was “minded to” support 7.6GW of LDES capacity, spread across 16 projects. Of this total, 4GW is expected to be online by the end of the decade, at the bottom end of the range said to be required for the clean power 2030 target.
The 16 projects are listed in the table below. They comprise four technologies: pumped storage hydro (3.9GW); lithium batteries (3.6GW); one vanadium-zinc flow battery (65MW); and one compressed- air energy storage site (50MW).
| Name | Technology | Region | Capacity (MW) | Duration (hours) | Storage capacity (MWh) |
| Earba PSH | Pumped storage hydro | North Scotland | 1,800 | 15 | 27,000 |
| Coire Glas | Pumped storage hydro | North Scotland | 1,440 | 32 | 46,100 |
| Loch Kemp Storage | Pumped storage hydro | North Scotland | 660 | 22 | 14,500 |
| East Claydon Storage | Lithium battery | East England | 500 | 12 | 6,000 |
| Sundon Storage | Lithium battery | East England | 500 | 8 | 4,000 |
| Field Netherton | Lithium battery | North Scotland | 400 | 16 | 6,400 |
| Field New Deer | Lithium battery | North Scotland | 400 | 18 | 7,200 |
| Field Lond Stratton | Lithium battery | East England | 400 | 16 | 6,400 |
| Springwell | Lithium battery | East Midlands | 400 | 11 | 4,400 |
| Drakelow (Innova) | Lithium battery | West Midlands | 385 | 9 | 3,500 |
| Field Rigifa | Lithium battery | North Scotland | 200 | 18 | 3,600 |
| Field Fyrish | Lithium battery | North Scotland | 200 | 17 | 3,400 |
| Ocker Hill BESS | Lithium battery | West Midlands | 145 | 8 | 1,200 |
| Thornton BESS 2 | Lithium battery | East Midlands | 100 | 11 | 1,100 |
| Frontier Legacy | Vanadium-zinc flow battery | North Wales | 65 | 8 | 500 |
| TeesCAES | Compressed air | North-east England | 50 | 30 | 1,500 |
Welcoming Ofgem’s initial decision on the cap-and-floor mechanism, energy minister Michael Shanks said in a statement:
“Forty years after the country’s last pumped storage facility, this government is getting Britain building again…
“We are [going] further and faster in delivering the clean-power mission by rolling out a new generation of pumped-hydro storage and state-of-the-art batteries – making more of the clean, homegrown power we already produce, cutting waste, lowering bills and strengthening our energy security.”
Collectively, the provisionally successful projects can provide between eight and 32 hours’ worth of electricity storage. The top ten projects in terms of duration that applied for the mechanism – those with at least 12 hours’ worth of storage – all moved forward.
Following Ofgem’s “minded-to” decision, the regulator launched a consultation that ended on 7 August 2026. It will now make a final decision on the projects that will be supported through the “cap and floor” mechanism.
Martin tells Carbon Brief that “it’s not over” yet, with Ofgem likely to face scrutiny over the methodology it used to determine these final results. He adds:
“There’s going to be a lot of activity and a lot of responses to that consultation. I don’t expect the overall amount of capacity that’s been awarded to change, although they could increase it – it could only go up, probably.
“But there might be some change in what projects end up getting approved as a result, or maybe they end up making some changes for the next window [of applications for LDES support].”
Alongside the cap-and-floor process being run by Ofgem, the government introduced legislation via the Planning and Infrastructure Act to support the introduction of the scheme.
Additionally, in August 2026, Innovate UK – the UK’s national innovation agency – announced new funding for “ultra-long” duration battery energy storage.
Up to £3m will be invested in demonstration projects as part of the first phase of the funding, with £10m available in the sector to support the development of technologies capable of storing and discharging at least 100 continuous hours of electricity.
In a statement responding to the new funding, Dr Jamie Speirs of the University of Strathclyde and co-director of the UK Energy Research Centre, said achieving the UK’s low-carbon ambitions will rely on “unlocking” LDES to support a highly renewable system. He added:
“By providing flexibility across hours, days and even seasons, LDES could enable a resilient, low-carbon electricity system – reducing curtailment, strengthening security of supply and ensuring that intermittent renewables can maximise their contribution to the grid in all conditions.
“Investing in innovation opportunities such as this call to support market deployment of LDES technologies is a key way to support these technologies to market, giving us the best chance to meet our net zero targets.”
Phase one of the funding is open for applications until 30 September, with grants of between £350,000 and £700,000 available for the successful projects.
Seamus Garvey, professor of dynamics at the University of Nottingham, welcomes the new funding. However, he cautions that more needs to be done to ensure the future markets for medium- and long- duration storage are not compromised by early commitments to storage at shorter timescales. He tells Carbon Brief:
“Energy storage will be required over many timescales and as we decarbonise further and further, the requirements for longer durations grow and grow.
“One key problem in my opinion is that because we are tending to buy into lots of short-duration stores now, we are actually removing pieces of market that could be accessible by longer duration stores and that is making the (already-difficult) problem of financing these stores ever more difficult.”
How could LDES impact energy bills?
The rollout of LDES technologies is widely expected to help reduce energy bills as the UK transitions to a clean-energy system.
There is still a significant amount of uncertainty over the development of LDES, due to the wide range of options, nascent stages of development and lack of market maturity. Nevertheless, most research agrees that it will cut electricity system costs by the middle of the century, relative to a world where LDES is not used.
For example, adding 20GW of LDES could reduce electricity system costs by £16-51bn between 2030 and 2050, compared with a scenario that has limited flexible capacity, according to analysis for the Department for Energy Security and Net Zero (DESNZ), by thinktank Regen and LCP Delta. The analysis, published in 2023, found that 20GW of LDES could reduce costs by around £26bn.
Analysis by LCP Delta in 2025 found that building 20GW of established medium-sized LDES technologies – pumped hydro with a capacity of 8-12 hours – by 2050 would have a system benefit of more than £10bn.
LDES could reduce total UK electricity system costs by £7-13bn annually by 2040-2050, according to a report from the Transition Finance Council – a public-private body launched by the City of London Corporation and the UK government – citing a range of other studies.
The council says this would predominantly be by avoiding “curtailment”, where some generators are paid to switch off because the electricity grid cannot accommodate their output. It says that LDES would defer the need for additional grid investment and would reduce balancing costs, including curtailment.
(In the financial year 2024-25, balancing costs reached £2.7bn, adding around £40 to the average household electricity bill. Some £1.9bn of this – £28 per household – related to constraints, where wind is “curtailed” and gas plants are switched on elsewhere.)
Curtailment is a particular issue in Scotland, where much of the UK’s wind capacity sits behind congested sections of the national electricity network. Porter notes on LinkedIn that this helps explain why 79% of the LDES projects by storage capacity are located in northern Scotland.
Martin says LDES will allow the UK to “use our renewable fleet more efficiently”. He adds:
“[LDES] is able to increase renewable energy and then decrease gas generation during high-demand periods, and that brings all sorts of benefits to the system.
“It reduces emissions, it reduces the overall cost of the system, it can help reduce bills for consumers. So those are the types of benefits that we’ll see as a result of [more] LDES being [on the system].”
The Transition Finance Council report adds that despite the upfront cost, LDES quickly pays for itself. It estimates that each gigawatt of long-duration flexibility on the system requires around £2-2.5bn in investment, but yields annual system savings of £0.5-1bn once operational.
As such, even accounting for the upfront cost of developing LDES, the technologies would provide £30-60bn of electricity system savings over 25 years, the council says. It adds that this means LDES “will repay itself several times over”.
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The post Q&A: What is ‘long-duration energy storage’ – and why does the UK need it? appeared first on Carbon Brief.
Q&A: What is ‘long-duration energy storage’ – and why does the UK need it?
Claver Gatete is Executive Secretary of the UN Economic Commission for Africa. Jason Veysey is Energy Modeling Program Director and Senior Scientist at the Stockholm Environment Institute. Lisa Sachs is Director of the Columbia Center on Sustainable Investment at Columbia University.
The case for global energy transition has rarely been clearer. The closure of the Strait of Hormuz earlier this year exposed the cost of unplanned, fossil-dependent systems, while the falling cost of renewables, the rising penetration of electric vehicles, and the growing value of demand flexibility have made the direction of travel obvious. The benefits of a clean, secure, integrated system are no longer in dispute. What remains unclear is how to build it.
Countries around the world have called for faster renewable energy deployment and alternative energy arrangements. A secure, affordable, resilient, decarbonised system requires specific investments in specific places in a specific sequence, optimised across sectors and borders. But very few governments have the analytical foundation to translate those imperatives into investment.
The two instruments that are supposed to determine investment priorities for decarbonisation – Nationally Determined Contributions (NDCs) and country platforms – cannot answer the most basic question facing any country undertaking an energy transition: what should the energy system look like?
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To close this gap, every country needs a bankable, economy-wide optimisation model for its energy system. A model is not a plan, but it can help answer the critical question of what the future energy system should look like. It shows how optimal scenarios vary as assumptions and policies are adjusted, calculates investment requirements and sequencing, and quantifies how system costs are affected by assumptions, policies, and exogenous variables like trade policy and financing terms.
Tool for efficient investment
Optimisation is a simplified way of simulating an energy system, but it can be an extremely powerful tool for moving energy planning from reactive (how do we manage the disparate actions in the energy system?) to intentional (what energy system underpins our national objectives?). A model can show how optimal scenarios vary as assumptions and policies are adjusted, and how investment requirements are quantified and sequenced.
Optimisation models can treat the energy system and the sectors it serves as an integrated whole, optimising across sectors and projects in ways that can be mutually reinforcing. If considered independently, growth in industrial demand, transport electrification, and digital infrastructure can add stress to the energy system. But an optimised plan can arrange these and other changes in an efficient, synergistic way.
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New load can be added where low-cost power is available; industrial customers can ensure the viability of investments in energy supply; electric vehicle charging policy can smooth load curves and reduce costs for all consumers.
Additionally, optimisation modeling can also change the financeability of investments. Taken alone, each project faces uncertainty about the rest of the system, which raises the cost of capital and causes projects to stall or unwind after contracts are signed. A coherent, optimised plan makes visible the coordination that private capital would otherwise have to bet on: identified offtake, sequenced and committed transmission, contracted power supply, and so on.
What COP31 and COP32 should do
The upcoming COPs in Turkey and Ethiopia can shift the center of gravity of international climate cooperation from fragmented commitments to planning. Three moves are urgently needed.
First, optimised, economy-wide, long-term energy system planning must be the foundation on which any meaningful NDC, country platform, or finance commitment rests. NDCs are typically drafted by environment or single-line ministries, with limited cross-sectoral input from ministries of energy, finance, and planning. They contain targets, derived from sectoral strategies or national commitments, not from an analytically grounded picture of what the energy system should look like and what investments would make it work. Country platforms are generally a portfolio of investments assembled from existing project pipelines, rather than derived from a system-level analysis of what an optimised, decarbonised energy system would require.
Second, recognise regions as a key planning unit. Modern integrated energy systems are inherently regional. Renewable endowments are unevenly distributed; balancing variable supply across borders lowers aggregate cost, reduces redundant backup capacity, and unlocks economies of scale no individual nation can achieve. Many energy investments in Southeast Asia, East Africa, Southern Africa and Central Asia may only be financeable in a regional context. Assessing domestic infrastructure without regional optimisation perpetuates the perception that decarbonisation is more expensive than it is.
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Third, finance the planning capacity. A coordinated commitment by multilateral development banks, bilateral donors, and philanthropic partners to help every region and its constituent countries develop and maintain their own modelling capability, with open-source tools and regional analytical hubs, would close the most consequential gap in the current architecture. The cost is small relative to current spending on country platforms, failed project preparation, and misallocated infrastructure investment.
This includes supporting regional institutions such as the ASEAN Centre for Energy, the African Energy Commission, regional power pools, and the Latin American and Caribbean Energy Organization to determine what optimised regional systems require. Country-by-country pledging, repeated at every COP, will not deliver what meaningfully integrated systems can.
The 2026 energy crisis made the cost of unplanned, fossil-dependent systems newly visible. That window of clarity will close. The international community should seize the moment to build the planning foundation that has been missing for thirty years, rather than commissioning another round of NDCs or pledges, striving for outcomes neither was designed to deliver.
The post Every country needs a model to help optimise its energy transition appeared first on Climate Home News.
Every country needs a model to help optimise its energy transition
The world is currently experiencing what is expected to become the strongest El Niño on record – dubbed a “super El Niño” by many.
El Niño is the warm phase of a recurring climate pattern in the tropical Pacific that releases heat from the ocean into the atmosphere.
This temporarily raises global temperatures and reshapes rainfall and extreme weather around the world – impacting the lives of billions of people.
The current El Niño event began in June and is expected to last into 2027.
El Niño is part of a wider climate pattern called the El Niño-Southern Oscillation (ENSO) cycle.
The ENSO cycle also has a cool phase, known as La Niña, as well as a “neutral” phase. El Niño and La Niña events typically last between nine and 12 months, but can go on longer.
Below, Carbon Brief explains how the ENSO cycle works, its impacts on extreme weather and global temperatures and why this El Niño event is projected to be the most intense since records began.
The post Explainer: How the ‘super El Niño’ will reshape the world’s weather appeared first on Carbon Brief.
https://interactive.carbonbrief.org/el-nino-explainer/index.html
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