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Sustainability Times
24-06-2025
- Business
- Sustainability Times
'Europe Just Flipped the Switch': World's Biggest Sand Battery Goes Live and Instantly Slashes CO2 Emissions by 70%
IN A NUTSHELL 🔋 Finland launches the world's first industrial-scale sand battery to store surplus renewable energy as heat. to store surplus renewable energy as heat. 🌍 The project aims to reduce CO2-equivalent emissions by nearly 70%, supporting Finland's goal for climate neutrality by 2035. by 2035. 🔄 This innovative system plays a crucial role in grid stability and promotes a circular economy by optimizing energy use. and promotes a circular economy by optimizing energy use. 💡 The sand battery serves as a model for sustainable energy solutions, showcasing potential for global adoption. In a groundbreaking step toward sustainable energy solutions, Finland has unveiled the world's first industrial-scale sand battery. This innovative energy storage system, developed by Finnish startup Polar Night Energy, aims to significantly reduce emissions and enhance grid stability. Located in the small municipality of Pornainen, the sand battery utilizes surplus renewable energy to generate heat, which is then distributed to the local district heating network. This pioneering project marks a major milestone in the global transition to clean energy, offering a glimpse into the future of energy storage and sustainability. Turning Sand into Power The sand battery represents a revolutionary approach to energy storage, utilizing abundant natural resources in an innovative way. Standing at an impressive 42.6 feet tall and spanning 49.2 feet, this massive installation is packed with 2,000 tons of crushed soapstone, a by-product from Finnish fireplace manufacturer Tulikivi. The stored heat generated by this system is fed into the district heating network, providing thermal energy to homes and municipal buildings. Remarkably, the sand battery can meet nearly a month's worth of local heating demand during the summer and up to a week in the winter. This innovative technology is not just a marvel of engineering but also a critical tool in reducing emissions. By storing clean electricity as heat, the sand battery is expected to cut CO2-equivalent emissions by 160 tons annually, reducing Pornainen's district heating emissions by nearly 70 percent. According to Mikko Paajanen, CEO of Loviisan Lämpö, this system allows the company to drastically reduce emissions while maintaining reliable heat production. The sand battery is a significant step toward achieving climate neutrality by 2035, further reducing reliance on fossil fuels and enhancing energy resilience. 'Your Phone Is Now a Solar Panel': This Shocking New Material Instantly Converts Devices Into Power Generators A Tool for Grid Stability and Circular Economy The sand battery is not just a storage system; it is a critical component in promoting a circular economy and enhancing grid stability. By uniting partners from various sectors, this project exemplifies the cross-sectoral cooperation necessary for driving the energy transition. Beyond heat storage, the sand battery plays a vital role in grid balancing, reducing emissions, and enabling smart energy management. The system optimizes its operation based on electricity prices and reserve markets managed by Finland's grid operator, Fingrid. This smart management helps maintain power grid stability as renewable energy sources like wind and solar expand. By integrating these diverse energy sources, the sand battery supports a more efficient use of resources across the energy system, paving the way for a sustainable energy future. This innovation highlights the potential of renewable energy storage solutions in achieving long-term environmental goals and economic sustainability. Dairy Methane Miracle: These Digesters Deliver 80% Emissions Drop and Turn Manure Into Massive Renewable Energy Wins Innovation and Emission Reduction The sand battery is a testament to the power of innovation in addressing global energy challenges. By leveraging surplus renewable energy, the system provides a sustainable solution for local heating needs while significantly reducing emissions. The installation delivers one megawatt of thermal energy and boasts a storage capacity of 100 megawatt-hours, making it the largest of its kind worldwide. This project also highlights the importance of reducing reliance on traditional energy sources. The sand battery will fully eliminate the use of oil and reduce wood chip consumption by about 60 percent in the local heating system. A biomass boiler remains on standby as a backup, ensuring a stable heat supply during periods of peak demand. This dual approach underscores the need for diverse and resilient energy solutions in the face of growing environmental and energy challenges. 'This System Turns Any EV Into a Solar Vehicle': Revolutionary Tech Lets Electric Cars Recharge Themselves While Driving Future Implications and Global Impact The successful implementation of the sand battery in Pornainen sets a precedent for similar projects worldwide. As the global community strives to meet ambitious climate targets, innovations like the sand battery offer a viable path toward reducing emissions and enhancing energy security. By demonstrating the potential of renewable energy storage, this project serves as a model for other regions seeking to transition away from fossil fuels. As countries around the world grapple with the challenges of climate change, the sand battery offers a scalable and sustainable solution that could play a crucial role in global energy strategies. The success of this project raises important questions about the future of energy storage and the potential for further innovation in this field. How might other regions adopt similar technologies to meet their energy needs and reduce emissions, and what new innovations will emerge to further advance the transition to a sustainable energy future? Our author used artificial intelligence to enhance this article. Did you like it? 4.4/5 (21)
Hindustan Times
18-06-2025
- Science
- Hindustan Times
World's largest sand battery switched on in Finland; stores heat for entire town
Finland has just switched on the world's largest sand battery, and it's already making waves in the energy world. The concept is refreshingly straightforward: when there's extra solar or wind power, the battery stores that energy as heat in a massive silo filled with sand. When the town needs heating, especially during those long Finnish winters, the stored heat is released and piped into homes, offices, and even the local swimming pool, cutting fossil fuels out of the equation. Lithium batteries get all the attention, but they're costly and come with their own environmental baggage. The Finnish team at Polar Night Energy decided to go back to basics and use sand, which is often just industrial waste from fireplace factories. The sand sits in a silo, and when there's surplus electricity, a current is passed through, heating the sand up to a scorching 400 to 500 degrees Celsius. Thanks to clever insulation, the sand holds onto that heat for weeks, losing only about 10 percent along the way. When warmth is needed, hot air is drawn out and sent into the district heating network, as reported by ZME Science. This new battery in Pornainen is a powerhouse. It can store about 1,000 megawatt-hours of heat, enough to keep roughly 260 homes warm for a week in winter. The economics are hard to ignore - sand is cheap, and in this case, it's basically recycled material. The process is simple, but it works. The big question is whether this Finnish innovation can work elsewhere. Sand batteries are a great fit for places with district heating systems, like Northern Europe, because they're cheap, reliable, and don't rely on rare materials. In Pornainen, the new battery is expected to cut heating emissions by nearly 70 per cent, saving about 160 metric tons of carbon dioxide every year. Not every country has a clean grid or the right infrastructure, though. In places where electricity still comes mostly from coal or gas, charging a sand battery could just shift the emissions upstream. Still, the core idea is flexible. You could use other cheap, local materials like crushed brick or volcanic rock and adapt the design to fit what's already there. If this catches on, sand - something most of us overlook - could play a starring role in the clean energy story.
Euronews
15-06-2025
- Science
- Euronews
World's largest sand battery starts slashing emissions in Finnish town
The world's largest sand battery has started working in the southern Finnish town of Pornainen. Capable of storing 100 MWh of thermal energy from solar and wind sources, it will enable residents to eliminate oil from their district heating network, thereby cutting emissions by nearly 70 per cent. 'Our goal is to be climate neutral by 2035, and the sand battery is a major step toward that,' says Mikko Paajanen, CEO of Loviisan Lämpö, which runs the district heating network. The industrial-scale solution from Finnish company Polar Night Energy is now the primary production plant for the network. The consumption of wood chips is set to drop by around 60 per cent as a result, while the existing biomass boiler will continue to serve as a backup and support the sand battery during peak demand periods.** The new 1 MW sand battery has a precursor. In May 2022, Polar Night Energy rigged a smaller design to a power station in Kankaanpää town. Launched just as Russia cut off gas supplies in retaliation for Finland joining NATO, the project was a timely example of how renewable energy could be harnessed in a new way. Euronews Green previously spoke to the young Finnish founders, Tommi Eronen and Markku Ylönen, who engineered the technology. 'We were talking about how - if we had the liberty to design a community for ourselves - how could we solve the energy problem in such a confined environment?' Markku said of the inspiration behind Polar Night Energy in 2018. 'Then quite quickly, especially here in the north, you run into the problem of energy storage if you're trying to produce the energy as cleanly as possible.' The friends started playing around with ideas, landing on sand as an affordable way to store the plentiful electricity generated when the sun is shining, or the wind blowing at a high rate. Finding a way to store these variable renewables is the crux of unleashing their full potential. Lithium batteries work well for specific applications, explains Markku, but aside from their environmental issues and expense, they cannot take in a huge amount of energy. Grains of sand, it turns out, are surprisingly roomy when it comes to energy storage. At 13 metres high and 15 metres wide, the sand battery in Pornainen is around 10 times larger than the one at Vatajankoski power plant in Kankaanpää. Polar Night Energy also previously connected a pilot plant to the district heating network of Tampere city. It's quite a simple structure to begin with, Polar Night Energy said of its prototype. A tall tower is filled with low-grade sand and charged up with the heat from excess solar and wind electricity. This works by a process called resistive heating, whereby heat is generated through the friction created when an electrical current passes through any material that is not a superconductor. The hot air is then circulated in the container through a heat exchanger. The sand can store heat at around 500C for several days to even months, providing a valuable store of cheaper energy during the winter. When needed, the battery discharges the hot air - warming water in the district heating network. Homes, offices and even the local swimming pool all benefit in Kankaanpää, for example. 'There's really nothing fancy there,' Markku says of the storage. 'The complex part happens on the computer; we need to know how the energy, or heat, moves inside the storage, so that we know all the time how much is available and at what rate we can discharge and charge.' Having refined its charging algorithms, Polar Night Energy has now successfully scaled up the storage tech in Pornainen. 'This project has gone very smoothly," says Mayor of Pornainen Antti Kuusela. Many of the town's buildings, including the comprehensive school, town hall, and library, rely on district heating. "Pornainen wants to be a front runner in sustainable energy solutions, and we welcome all innovations that support that goal. One of the key targets in our municipal strategy is carbon neutrality, and the sand battery plays an important role in achieving it." In total, the sand battery is expected to knock off 160 tonnes of carbon dioxide equivalent emissions per year. The battery's thermal energy storage capacity equates to almost one month's heat demand in summer and a one-week demand in winter in Pornainen, Polar Night Energy says. 'We wanted to find something that can be sourced nearly everywhere in the world,' Markku said. But is sand as ubiquitous as we might think? Demand for the construction material is set to soar by 45 per cent in the next 40 years, according to a recent Dutch study. Building sand is typically extracted from rivers and lakes, and 'sand pirates' are speeding up its loss from these ecosystems. But as far as the Finnish engineers are concerned, it doesn't really matter where the sand comes from. Though builders' sand was used initially (to limit transport emissions), sand batteries work with any sand-like material that has a high enough density, within certain thermodynamic parameters. In Pornainen, Polar Night Energy has found a sustainable material in crushed soapstone; a by-product of a Finnish company's manufacture of heat-retaining fireplaces. "Tulikivi is a well-known and traditional company,' says Naskali. 'The soapstone they use is a very Finnish thing.' "We always choose the thermal energy storage medium based on the customer's needs. Examining and testing different materials is crucial for us to use materials that are suitable in terms of properties, cost-effectiveness, and promotion of circular economy," she adds. Polar Night Energy has big ambitions to take its technology worldwide, and is currently in "active discussions" with both Finnish and international partners. Earlier this spring, the company announced a pilot in Valkeakoski to explore the conversion of stored thermal energy back into electricity. As Markku told us back in 2022, 'we want to build a hundred times larger storages around the world as fast as possible.' The ocean is essential to limiting global temperature rise. It captures about 30 per cent of all carbon dioxide emissions, and 90 per cent of the excess heat generated by these, but has been overlooked in the conversation about how to curb climate change. This is increasingly concerning as oceans suffer from the results of excess carbon dioxide, including acidification and rising sea temperatures. These have significant impacts on ecosystems, the communities that rely on them, and the ocean's role as a climate regulator. 'The globe is burning. Our oceans are boiling. Scientists speak of effects that we're having, heatwaves even in our oceans, and as we have the rising sea levels, submersion threatens us,' said French President Emmanuel Macron at the opening plenary of the United Nations Ocean Conference (UNOC) in Nice this week. The conference saw what Macron called 'unprecedented mobilisation' for oceans, with over 120 countries, 50 world leaders and 10,000 people in attendance. It also included a strong push to start including oceans in climate and biodiversity talks, including the COP30 climate conference to be held in Brazil in November. That would mark a big change from previous discussions. Even the Paris Agreement - the landmark treaty that aimed to keep global warming below 1.5C - has just one mention of the ocean, noting the importance of ensuring the integrity of all ecosystems. 'We're very, very late. We're at UNOC3 - the climate COPs are at COP30. Unfortunately, the climate COPs, much like other conferences of the like, have not really properly integrated the ocean. So on the science, we're picking up, but on the political side of things, it's still very, very much catching up,' says Louis Lambrechts from the Oceano Azul Foundation. Speaking at the beginning of the summit, Marcon pointed to the ocean's carbon capture potential and its role as a climate regulator, highlighting the need to act to protect this, particularly ahead of COP30. Lambrechts tells Euronews Green that it is crucial to create coherence between climate, biodiversity, and ocean silos. 'What should come out of this conference [...] should be very clear messages towards the next climate COP happening in Brazil later this year, about why it's so critical that the ocean should be properly addressed and considered in the debates,' he says. 'Any objective or action we're trying to have on climate would be completely unrealistic if the ocean wasn't there to play the game with us,' he adds. Isabella Lövin, former Swedish climate and environment minister and now Green member of the European Parliament described how, during her time in government, she fought to get oceans into the climate conversation, but said this shift has taken a long time. 'People have so much to think about - what's happening on land and with the forests and the atmosphere and the cryosphere and so on, but the oceans are really one of the two major climate regulators, so we need to have much more conversations on how we can preserve the ocean in order to stay below 1.5C,' she explains. Similarly, Ana Vasconcelos, a member of the European Parliament with centrist group Renew Europe, warned that, politically, ignoring the ocean in climate and economic negotiations is a failure. 'Europe must go to COP30 with a clear message: the ocean is not a backdrop - it's a frontline climate actor. I want the UNOC to produce real and concrete commitments that reflect the scale of the crisis and the ocean's role in solving it,' she says. That includes establishing clear and actionable guidelines for global ocean governance, recognising that the ocean is a common resource that needs to be safeguarded through global cooperation, she adds. Ahead of COP30, France and Brazil also launched the Blue NDC Challenge, calling on countries to place the ocean at the centre of their plans to reach the goals of the Paris Agreement. Countries need to submit updated versions of these plans by September ahead of COP30. The ocean's role as a climate regulator is increasingly being chipped away. At the start of the conference, on 8 June, scientists released the first Starfish Barometer - an assessment of ocean health aimed at providing reliable evidence to inform policymakers and track the restoration of ocean health. It warned of rising sea levels, record temperatures, and rapid acidification. This is worrying given the climate disaster the ocean has, so far, held back. 'If the ocean wasn't there, it could be 50C warmer on land, but you don't get anything for free in this world, and the ocean is changing as a result of all of that excess heat going into it, and its capacity to continue absorbing heat is not something we can count on into the future,' says Robert Blasiak, Associate Professor at the Stockholm Resilience Centre. Lambrechts likens the ocean warming to a kettle boiling: taking a long time to warm up - much longer than the air - but staying hot for a long time. The world is heading towards that boiling point, he says, creating dead zones where marine life cannot survive, hindering ecosystems' ability to store carbon, as well as affecting fish populations and impacting those communities who rely on them. While some damage to the ocean may take centuries to recover from, there are measures we could take today to help prevent further harm. Banning bottom trawling and deep sea mining would be decisions with immediate results, says Lévy. These damage ocean ecosystems and, in the case of deep sea mining, a lot of the potential impacts are still unknown. The EU's 2023 Marine Action Plan called on member states to phase out bottom trawling in all marine protected areas by 2030, due to the importance of the seabed for healthy marine ecosystems and climate change mitigation. While 37 countries, including 15 EU nations and the UK, have signed a pause on deep sea mining as part of a political effort to prevent the practice until the implications of it are understood. According to Lövin, the most important thing to consider when protecting the ocean is the precautionary principle - the idea of avoiding activities that might cause harm that is not yet known. 'We need to really take the precautionary approach seriously because we are the decision makers. We are the ones that are going to be held accountable. We have the responsibility for future generations,' she tells Euronews Green. Vasconcelos also called on the EU to take a 'central and credible role' in International Seabed Authority (ISA) negotiations in July to ensure that ocean governance aligns with its climate and geopolitical priorities. Ahead of UNOC, the European Union released its Ocean Pact, pledging €1 billion to support ocean conservation, science and sustainable fishing. It also announced that it will propose an Ocean Act in 2027 aimed at strengthening and modernising maritime spatial planning to help achieve the pact's priorities, like restoring ocean health, building a blue economy, and advancing research and knowledge. While it was not as ambitious as some would have liked, with Vasconcelos saying it is unclear where the €1 billion will come from and leading ocean NGOs saying it lacks concrete protection measures, it has been widely welcomed as a way of bringing oceans back into the conversation and linking different ocean policies. However, not everyone is on board. One of the notable absences from the conference was the US government, which under President Trump has pulled out of the Paris Agreement and is unilaterally trying to push ahead with deep sea mining. Lövin called the lack of US presence a scandal, contrasting it with the efforts of the EU and other world leaders to work against planetary collapse and pointing to the need to work together to protect the world for future generations.
Zawya
26-05-2025
- Business
- Zawya
Oman: Exploring the potential of sand batteries for the Gulf
In the global quest for sustainable energy, the spotlight often shines on solar panels, wind turbines, and lithium-ion batteries. But in the quiet town of Kankaanpää, Finland, a modest silo packed with sand is rewriting the rules of energy storage; offering a promising solution to one of renewable energy's most stubborn challenges: what to do when the sun isn't shining and the wind isn't blowing. The world's first commercial sand battery became operational in July 2022, the result of a collaboration between Finnish startup Polar Night Energy and local utility Vatajankoski (Polar Night Energy, 2022). The installation, a 7-meter-high steel container filled with around 100 tons of coarse sand, uses excess renewable electricity to heat air, which is then circulated through the sand, raising its temperature to about 600°C. The stored thermal energy is later used to supply the town's district heating network, warming homes and even a municipal swimming pool (BBC Future, 2022). Unlike conventional batteries, which store electricity, sand batteries store heat - a key advantage in cold climates where heating demand exceeds electrical use. The Kankaanpää system delivers 100 kW of heating power with a thermal storage capacity of 8 MWh, allowing energy to be held for days or weeks with minimal loss (Polar Night Energy, 2022). A second installation in Pornainen, southern Finland, is currently under development. Slated for commissioning in 2025, this larger unit will store up to 100 MWh using 2,000 tons of crushed soapstone, a byproduct of fireplace manufacturing. The system is expected to cut the town's oil-based heating use by over 60% (PV Magazine, 2024). The simplicity and sustainability of sand battery technology make it especially appealing. Sand is abundant, affordable, and thermally stable. Unlike lithium-ion systems, sand batteries involve no toxic materials or rare earth elements and operate without moving parts—minimizing long-term maintenance and degradation (NREL, 2024). Although the concept remains new, it is attracting global attention. The US National Renewable Energy Laboratory (NREL) has confirmed sand's potential for long-duration thermal storage, capable of maintaining high temperatures with minimal heat loss over time (NREL, 2024). Meanwhile, researchers in the United Arab Emirates have demonstrated that local desert sand can store solar energy at temperatures of up to 1,000°C, proving its viability for regional adaptation (Masdar Institute, 2017). So far, no sand battery projects have been deployed in the Gulf. Energy storage in the GCC remains dominated by lithium-ion systems, such as Saudi Arabia's 1,000 MWh battery at the Red Sea Project (Red Sea Global, 2023) and the UAE's Masdar-led 5 GW solar-battery hybrid system (Financial Times, 2024). Yet the Gulf's abundant solar radiation, readily available desert sand, and commitment to decarbonization position it well for future sand battery implementation. If adapted to local needs -particularly cooling- sand batteries could complement existing renewable strategies in the GCC. For example, thermal storage could be linked to concentrated solar power (CSP) systems or used in district cooling networks. These adaptations would support the region's goal of net-zero energy systems without relying heavily on imported battery materials. While commercial use remains limited to Finland, sand batteries offer an elegant, low-cost path forward, particularly for regions seeking seasonal energy storage solutions without the footprint of chemical battery farms. As Polar Night Energy's team puts it, 'the future of clean energy may not only be in the sky, but beneath our feet.' 2022 © All right reserved for Oman Establishment for Press, Publication and Advertising (OEPPA) Provided by SyndiGate Media Inc. (
Observer
24-05-2025
- Business
- Observer
Exploring the potential of sand batteries for the Gulf
In the global quest for sustainable energy, the spotlight often shines on solar panels, wind turbines, and lithium-ion batteries. But in the quiet town of Kankaanpää, Finland, a modest silo packed with sand is rewriting the rules of energy storage; offering a promising solution to one of renewable energy's most stubborn challenges: what to do when the sun isn't shining and the wind isn't blowing. The world's first commercial sand battery became operational in July 2022, the result of a collaboration between Finnish startup Polar Night Energy and local utility Vatajankoski (Polar Night Energy, 2022). The installation, a 7-meter-high steel container filled with around 100 tons of coarse sand, uses excess renewable electricity to heat air, which is then circulated through the sand, raising its temperature to about 600°C. The stored thermal energy is later used to supply the town's district heating network, warming homes and even a municipal swimming pool (BBC Future, 2022). Unlike conventional batteries, which store electricity, sand batteries store heat - a key advantage in cold climates where heating demand exceeds electrical use. The Kankaanpää system delivers 100 kW of heating power with a thermal storage capacity of 8 MWh, allowing energy to be held for days or weeks with minimal loss (Polar Night Energy, 2022). A second installation in Pornainen, southern Finland, is currently under development. Slated for commissioning in 2025, this larger unit will store up to 100 MWh using 2,000 tons of crushed soapstone, a byproduct of fireplace manufacturing. The system is expected to cut the town's oil-based heating use by over 60% (PV Magazine, 2024). The simplicity and sustainability of sand battery technology make it especially appealing. Sand is abundant, affordable, and thermally stable. Unlike lithium-ion systems, sand batteries involve no toxic materials or rare earth elements and operate without moving parts—minimizing long-term maintenance and degradation (NREL, 2024). Although the concept remains new, it is attracting global attention. The US National Renewable Energy Laboratory (NREL) has confirmed sand's potential for long-duration thermal storage, capable of maintaining high temperatures with minimal heat loss over time (NREL, 2024). Meanwhile, researchers in the United Arab Emirates have demonstrated that local desert sand can store solar energy at temperatures of up to 1,000°C, proving its viability for regional adaptation (Masdar Institute, 2017). So far, no sand battery projects have been deployed in the Gulf. Energy storage in the GCC remains dominated by lithium-ion systems, such as Saudi Arabia's 1,000 MWh battery at the Red Sea Project (Red Sea Global, 2023) and the UAE's Masdar-led 5 GW solar-battery hybrid system (Financial Times, 2024). Yet the Gulf's abundant solar radiation, readily available desert sand, and commitment to decarbonization position it well for future sand battery implementation. If adapted to local needs -particularly cooling- sand batteries could complement existing renewable strategies in the GCC. For example, thermal storage could be linked to concentrated solar power (CSP) systems or used in district cooling networks. These adaptations would support the region's goal of net-zero energy systems without relying heavily on imported battery materials. While commercial use remains limited to Finland, sand batteries offer an elegant, low-cost path forward, particularly for regions seeking seasonal energy storage solutions without the footprint of chemical battery farms. As Polar Night Energy's team puts it, 'the future of clean energy may not only be in the sky, but beneath our feet.'
