A Dutch startup thinks it has the answer to two of Europe’s biggest energy transition conundrums – long-duration storage batteries that are free from critical minerals and powered by rust.
In a pilot project in February, Amsterdam-based Ore Energy supplied four days of uninterrupted power to a research facility operated by France’s EDF electricity utility using a battery made of little more than iron pellets, water and air. That followed a grid installation in the Netherlands last year.
“These are the first instances of grid-connected iron-air batteries in Europe,” Yakup Koç, Ore Energy’s chief operating officer, told Climate Home News. “With these deployments, we’ve proven that the technology really works.”
Using abundant, cheap materials that can be sourced locally across Europe, iron-air batteries store and release electricity through a simple, chemical process: rusting and de-rusting.
“Rusting refers to discharging, and de-rusting refers to charging,” Koç said. “When discharging, air is drawn in and reacts with the iron, forming rust and releasing electricity in the process. To recharge, the oxygen is removed, and the rust reverts to iron, ready to go again.”
Energy transition’s “missing link”
Batteries able to store solar and wind power over longer periods of time than conventional lithium-ion batteries are often described as the “missing link” in the energy transition.
Technology such as Ore Energy’s could hold particular appeal for Europe as it strives to reduce its exposure to volatile critical mineral supply chains and boost its production of batteries for power storage and electric vehicles (EVs) instead of relying so heavily on imports from China.
“There are no critical raw materials in our batteries … which means we are truly independent of supply chain issues in that sense,” Koç said.
It also makes them cheaper than established batteries, which mostly use either lithium iron phosphate (LFP) or lithium nickel cobalt manganese oxide (NMC) chemistries.
“Critical raw materials are expensive,” Koç adds. “Because we’re using abundant resources, our cost price can be as much as 10 times lower than lithium.”
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Europe sprints for storage capacity
Wind and solar make up the fastest-growing energy sources globally, but bridging inherent supply fluctuations requires batteries capable of storing energy for far longer than currently possible with a typical lithium-ion battery.
Demand for battery energy storage systems has surged and it currently accounts for 15% of global battery demand, according to the International Energy Agency (IEA).
Multi-day storage capabilities will become increasingly important as renewable integration booms, said Zeenat Hameed, principal analyst for energy storage at Wood Mackenzie.
“Under net-zero scenarios, the average duration of newly installed storage assets may need to increase from around 2.5 hours today to roughly 20 hours to manage multi-day variability in wind and solar generation,” she told Climate Home News.
Europe added a record 27.1 GWh of new batteries in 2025, bringing total capacity to 77.3 GWh, according to a recent report by industry group SolarPower Europe, adding that capacity must increase 10-fold by 2030 to meet its needs.
With about 90% of battery-storage applications relying on Chinese lithium batteries, steps to diversify suppliers are also seen as vital to shore up energy security.
Innovation that can help reduce or diversify battery mineral supplies and demand – for example, technologies that do not require critical minerals – could play a key role in shoring up energy security, the IEA says.
Uncomplicated alternative?
This is where iron-air comes in.
Koç said Ore’s system can be configured to store energy anywhere between 24 and 100 hours, and is capable of being reused over a lifespan of as much as 20 years.
Each battery storage unit ships in standard 40-foot containers, a similar size as lithium-ion systems, and can be connected and operational within days of arriving on site.
Ore Energy is not the only company in the race to bring iron-air to the market.
US-based Form Energy, which has also developed an iron-air battery system, has partnered with Xcel Energy on a 10-megawatt (MW) iron-air system in Minnesota at a retiring coal plant. They have also announced plans to provide a 300-MW iron-air system to power a new Google data centre.
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Lithium iron phosphate batteries do not contain cobalt and nickel, which are mostly found in rainforest nations like the DR Congo and Indonesia
Beyond iron-air, a broader range of long-duration energy storage (LDES) technologies is taking shape. US-based Noon Energy is developing a carbon-oxygen battery based on solid-oxide fuel cell technology which it says avoids “scarce metals and minerals” and targets storage durations of 100 hours and above, while E-Zinc’s zinc-air systems are another player in the ultra-long-duration bracket.
Mahika Sri Krishna from the LDES Council, a global organisation focused on accelerating long duration energy storage solutions, told Climate Home News a mix of different technologies would be necessary to support grid reliability as renewables gain ground.
“Medium-duration storage solutions can help manage daily variability in renewable generation, while very long-duration systems may help address less frequent but more challenging reliability events,” said Sri Krishna, a senior manager for research and analysis at the group.
Last longer, scale up faster
Iron-air faces numerous challenges to scale-up and challenge established battery technologies, however, energy experts say.
Demand for multi-day storage is not yet high enough to drive commercialisation, Hameed said, estimating that lithium-ion is expected to retain about 85% of the global storage market through 2034 as economies of scale and manufacturing innovations reduce its costs.
While iron-air’s raw materials are cheap, the overall system cost still needs to prove itself at scale, Hameed added.
At Ore Energy, the next step is moving from single- to multi-container configurations, building what Koç describes as an “energy reservoir” that can be deployed across different use cases.
The scale-up itself, he said, is less the challenge than gaining industry acceptance by building a commercial track record.
“It’s not only about customers seeing the data and knowing it works,” he said. “The whole ecosystem around a new technology has to be brought along.”
When that happens, the technology could have transformative effects on Europe’s energy transition, he said.
“Europe will not decarbonise its power system on renewables alone,” Koç said. “Without long-duration storage, Europe risks replacing dependence on fossil fuels with dependence on overbuilding, curtailment and backup generation.”
The post Dutch startup’s rust-powered batteries could help crack Europe’s energy storage gap appeared first on Climate Home News.
Dutch startup’s rust-powered batteries could help crack Europe’s energy storage gap
Climate Change
‘A strong start’: WA’s transition to renewable energy powerhouse aided by Premier’s announcement
PERTH, Tuesday 27 October 2026 — In response to WA Premier Roger Cook’s announcement of a doubled renewable energy target for WA’s main energy system, reported today, the following comments can be attributed to WA Campaign Lead at Greenpeace Australia Pacific, Geoff Bice:
“A Western Australian renewable energy target of 75% by 2030-31 is a welcome step in the right direction following sustained calls from across the WA community including unions, industry and advocacy groups.
“This common sense policy is a vital roadmap for WA’s shift to affordable and reliable solar and wind backed by batteries, and gives certainty to business and investors in a volatile global environment.
“Clear policy on renewable energy for WA’s main electricity grid will allow the phase out of polluting coal-fired power from the system and begin to remedy our reliance on expensive and polluting gas.
“This commitment is a positive first step for WA’s clean energy future, but the Cook Government must also address the state’s rising climate pollution driven by the gas industry and industrial processing.
“A natural step towards tackling rising emissions is rejecting any new fossil fuel projects, including Woodside’s proposal to drill for gas at Scott Reef.
“Expert advice and analysis compiled by Greenpeace and Springmount Advisory clearly lays out a viable pathway for WA to follow a staged transition away from fossil fuels and unlock almost $1 trillion of economic value by 2060 by replacing gas exports with green exports.
“The renewable energy target is a strong start — it must now be paired with emissions reduction targets to ensure climate pollution from WA starts falling urgently, and a plan for WA to become a renewable energy powerhouse must be prioritised.”
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Media contact
Emma Sangalli at emma.sangalli@greenpeace.org or 0431 513 465
‘A strong start’: WA’s transition to renewable energy powerhouse aided by Premier’s announcement
Climate Change
WA EPA warned Woodside of ‘serious, significant and irreversible’ harms to Scott Reef from gas plans, new documents reveal
SYDNEY/PERTH, Tuesday 27 October 2026 — In response to Western Australian Environmental Protection Authority (WA EPA) documents about Woodside’s plans to drill for gas at Scott Reef, as reported today, the following comments can be attributed to Glenn Walker, Head of Nature at Greenpeace Australia Pacific:
“These WA EPA documents show the depth of concern echoed by multiple regulators about Woodside’s plans to drill for oil and gas at Scott Reef, a proposal that flouts legislated nature protection principles.
“The WA EPA appears to have informed Woodside that the Browse project was bound for rejection based on an extensive review process and the opinion of multiple state government departments and independent experts.
“Greenpeace analyses have confirmed this year that Woodside’s gas drilling plans at Scott Reef still risk destroying vulnerable green turtle homes, further endangering pygmy blue whales with atomic bomb-level seismic blasting noise, and unleashing the worst oil spill in Australian history.
“The federal environment department raised similar red flags about oil spill risk from Woodside’s Scott Reef drilling plans in 2025 and 2026 before handing the project’s assessment over to the National Environmental Protection Authority.
“Woodside’s suggested ‘fixes’ in response to grave concerns for the wellbeing of Scott Reef and threatened species have been unilaterally criticised by independent experts for lacking in scientific basis and adequate detail.
“It would be a major backflip for both the WA EPA and the National EPA to now recommend approving this project. It is now critical that these regulators maintain their independence from corporate and political influence and reject this destructive project once and for all.”
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Notes to editor
Greenpeace Technical assessments of Woodside’s Browse Pygmy Blue Whale Management Plan, the Turtle Management Plan, and an analysis of Woodside’s Browse Oil Spill Modelling and Risk Mitigation Plan
High res images and footage of Scott Reef can be found here
Media contact:
Emma Sangalli at emma.sangalli@greenpeace.org or 0431 513 465
The surprise re-election of Brazil’s President Luiz Inácio Lula da Silva on Sunday, in a tight race against right-wing candidate Flávio Bolsonaro, has raised hopes the country can meet a flagship target to end deforestation in all its biomes by 2030 and advance international fundraising to protect rainforests.
Defying expectations to win an unprecedented fourth term in office, Lula – who turns 81 this week – said in his acceptance speech that “we will show the world how climate policy is handled in this country”, and highlighted that, during his last four years as leader, the country has reduced deforestation every year.
Earlier this month, new data from Brazil’s space agency showed that forest-clearing in the Amazon fell to its lowest on record, after the introduction of a deforestation action plan that constrained illegal cattle ranching from expanding into the world’s largest rainforest.
Brazil leads “encouraging” decline in global rainforest destruction in 2025
At an international level, the country has long championed forest conservation, spearheading the creation of the newly established Tropical Forest Forever Facility (TFFF). As president of last year’s COP30 climate summit, the country is also developing a global roadmap to halt forest loss by the end of the decade, in line with a global goal, which will be presented at the upcoming UN climate summit in Antalya.
‘Much more needs to be done’
In 2023, Lula’s previous administration introduced a deforestation action plan that set a target of zero deforestation by 2030, achieving swift results. His re-election paves the way for this downward trend to continue.
Carlos Nobre, a veteran Brazilian climate scientist and co-chair of the Science Panel for the Amazon, said Brazil now has a “historic opportunity” to prevent a tipping point where large parts of the Amazon rainforest could turn into savanna, with dangerous impacts for the planet’s climate.
“The reduction in deforestation over recent years has been crucial, but much more needs to be done. Ending deforestation by 2030, tackling forest degradation and accelerating large-scale forest restoration are urgent priorities,” he said.
Anders Haug Larsen, advocacy director at the Norway Rainforest Foundation, described the election result as a “relief”, adding it makes it more attractive for donors to support rainforest protection in the country.
“Hope is a scarce commodity these days,” he said. “The international community must grasp this opportunity to strengthen efforts towards zero deforestation in the Amazon.”
Rainforest fund boosted by election result
Brazil was the original proponent of the TFFF, one of the highest-profile initiatives aimed at channelling new finance to protect the world’s rainforests. The fund aims to raise public seed capital to invest in financial markets, and then pay rainforest countries from the returns on those investments.
Despite being a developing country, Brazil has pledged $1 billion to the fund and is expected to play a key role in helping reach its goal to raise $10 billion from governments by the end of this year.
“We need more countries to come on board to meet the mobilisation target of $10 billion this year, and this election should inject trust in the calls from rainforest countries for support to their forest protection efforts,” Larsen said.
Brazil confident new rainforest fund will reach $10bn donor milestone
On Monday, the day after the election result, the Netherlands announced a €500-million contribution to the fund, which will be disbursed over ten years and is still subject to parliamentary approval. This brings the total pledged to the TFFF from a range of countries to $7.8 billion.
Norway’s climate minister Sigrun Aasland told a TFFF event on the sidelines of the UN biodiversity summit in Yerevan that she was hopeful the $10bn goal could be achieved by the end of this year.
Brazilian officials have led the TFFF’s fundraising efforts and said they are in conversations with more potential donors including China, Korea and Japan.