The grid, a sprawling nervous system of electrons, has long suffered from a chronic case of intermittency, its renewable arteries pulsing erratically with the whims of sun and wind. Lithium-ion batteries, while valiant, offer merely a fleeting, four-hour patch on a problem that demands days of sustained power. Enter the iron-air battery, a seemingly humble chemistry now poised to deliver 100 hours of grid-scale energy storage at costs competitive with the fossil fuel plants it aims to displace, fundamentally redrawing the economics of renewable integration and unlocking a $14.27 billion market by 2035.
The modern energy grid is a marvel of engineering, yet it struggles with a fundamental paradox: the sun shines when it wants, and the wind blows on its own schedule. Our reliance on intermittent renewable energy sources, while laudable, has created a chasm between generation and demand. For years, the stop-gap solution has been lithium-ion batteries, capable of holding a charge for a few hours, perfect for smoothing out momentary fluctuations or shifting peak demand by an afternoon. But what happens when the sun doesn't shine for three days straight, or the wind dies for a week? That, dear investor, is when the grid starts to look less like a marvel and more like a house of cards.
The old maps of energy storage are being redrawn. We are not talking about a mere incremental improvement; this is a foundational shift, akin to moving from short-distance sprints to ultra-marathons. The quest for long-duration energy storage (LDES) has been the holy grail of grid decarbonization, a technological quest to bridge the multi-day gap between renewable generation and consistent power delivery. Without it, the promise of a truly green grid remains just that—a promise, perpetually tethered to the fossil fuel safety net.
This isn't just about preventing blackouts; it's about actively rebuilding the energy infrastructure from the ground up. The sheer scale of the challenge—and the corresponding opportunity—is difficult to overstate. We are witnessing the emergence of a technology that could finally decouple energy generation from energy consumption, allowing renewable sources to fulfill their true potential.
The global energy transition, often lauded as a triumph of environmental consciousness, has inadvertently exposed a critical vulnerability: the grid's inability to store power for extended periods. Lithium-ion batteries, the current darlings of the energy storage world, typically offer a mere 4-6 hours of discharge duration. While excellent for electric vehicles and short-term grid balancing, they are simply not built for the multi-day storage needs required to truly integrate high penetrations of intermittent renewables. This limitation has created a $14.27 billion market opportunity for technologies capable of bridging this gap.
The economic imperative is stark. Legacy fossil fuel plants, despite their carbon footprint, offer dispatchable power on demand. To compete, renewables need a storage solution that can mimic this reliability at a comparable cost. This is where the long-duration storage narrative truly begins to crystallize, transforming from a niche academic pursuit into a commercial necessity. The market is not just demanding storage; it is demanding endurance.
Recent years have seen a flurry of activity, with governments and utilities increasingly recognizing the LDES bottleneck. The U.S. Department of Energy (DOE) has thrown its weight behind projects like the Multiday Iron Air Demonstration (MIND), awarding over $4.3 million to collaborations aimed at accelerating commercialization. This isn't charity; it's strategic investment in foundational infrastructure. The shift from short-term fixes to multi-day solutions is not merely an upgrade; it's a recalibration of the entire energy supply chain.
High costs of lithium-ion for long duration → Limited renewable integration → Continued reliance on fossil fuels → Urgent demand for LDES solutions.
The demand for LDES is not theoretical; it's already translating into concrete deployments. Form Energy, a key player in the iron-air space, has already secured over 14 GWh of planned deployments across multiple U.S. states, including Minnesota, Colorado, California, and New York. These aren't pilot projects in a lab; these are real-world commitments to replace fossil fuel capacity with a long-duration alternative. The landscape is shifting, and the rust is beginning to settle.
At its heart, the iron-air battery is a deceptively simple concept, a marvel of chemical elegance wrapped in industrial-grade resilience. Imagine a battery that breathes, literally. It uses iron as its anode (the negative electrode) and oxygen from the air as its cathode (the positive electrode). When discharging, the iron rusts, combining with oxygen to release electrons. When charging, electricity reverses the process, turning the rust back into iron. It's an electrochemical dance of oxidation and reduction, powered by two of the most abundant elements on Earth: iron and air.
Unlike lithium-ion batteries, which rely on the intercalation of lithium ions into crystalline structures, iron-air batteries are a type of "metal-air" chemistry. This means they don't need to store oxygen within the battery itself, significantly reducing their size, weight, and, crucially, cost. The air is, quite literally, free. This fundamental design choice allows for the 100-hour discharge durations that make them so disruptive for grid-scale applications. You're not just storing energy; you're storing the potential to react, a chemical promise delivered on demand.
Consider the contrast: lithium-ion batteries are energy-dense, excellent for rapid discharge and charge cycles, but their cost per unit of energy stored escalates dramatically with duration. Iron-air batteries, however, excel at energy capacity rather than power density. They are designed to hold vast amounts of energy for extended periods, releasing it slowly and steadily over days, not hours. This makes them ideal for grid applications where sustained output is paramount, such as covering multi-day lulls in renewable generation.
The core components are simple: iron electrodes, an electrolyte (typically water-based and non-flammable), and an air-breathing cathode. This simplicity translates directly into cost advantages. Iron is one of the cheapest and most abundant metals on the planet. Air is, well, air. This circumvents the supply chain bottlenecks and geopolitical risks associated with critical minerals like lithium, cobalt, and nickel. It's a battery chemistry built for the masses, not just the privileged few.
Form Energy's specific approach involves stacks of iron electrodes immersed in a water-based, non-flammable electrolyte, housed in modular battery blocks the size of a shipping container. When the grid needs power, oxygen from the air flows into the battery, reacting with the iron to form rust and generate electricity. When excess renewable energy is available, the process reverses, converting the rust back into iron and releasing oxygen. It's a closed-loop system, elegant in its industrial scale.
Key Takeaway: Iron-air batteries leverage abundant, inexpensive materials and an elegant electrochemical process to deliver multi-day energy storage, fundamentally altering the cost-benefit analysis for grid-scale applications.
The implications of a cost-effective, 100-hour energy storage solution are nothing short of transformative for the energy market. We're talking about a complete re-evaluation of how grids are designed, how renewables are integrated, and how utilities manage their assets. The global iron-air battery market is not just growing; it's exploding, projected to surge from a nascent $247.31 million in 2025 to a formidable $14.27 billion by 2035, exhibiting a breathtaking CAGR of 46.25%. This isn't merely a niche; it's a new tectonic plate forming beneath the energy landscape.
This growth isn't speculative; it's driven by a tangible need to replace aging fossil fuel infrastructure with reliable, clean alternatives. Consider the utility sector: for decades, their primary concern has been ensuring constant power, often achieved by firing up natural gas peaker plants when demand spikes or renewables falter. Iron-air batteries offer a direct, cleaner, and increasingly cheaper replacement for this role. Xcel Energy, for instance, is collaborating with Form Energy to deploy two 10MW, 100-hour LDES systems at retiring coal plants in Minnesota and Colorado. This is not just adding storage; it's repurposing existing grid connections and infrastructure for a decarbonized future.
The addressable market extends far beyond simply replacing peaker plants. It includes enabling the full potential of offshore wind farms, which generate power consistently but often far from demand centers, or vast solar arrays in deserts that need to power cities through the night and into cloudy days. The ability to store energy for four days means a utility can confidently rely on renewables to meet baseload demand, significantly reducing their reliance on fossil fuels and their exposure to volatile fuel prices.
The cascading effects are profound. As LDES becomes more prevalent, the value proposition for new renewable energy projects strengthens, driving further investment in solar and wind. Furthermore, the economic viability of microgrids and energy independence for remote communities dramatically improves. This isn't just about big utilities; it's about distributed energy resources gaining true autonomy. The rust revolution is creating a new economic engine, transforming what was once considered waste into the very foundation of a sustainable future.
The race to commercialize iron-air battery technology is heating up, with a few key players emerging as frontrunners, each bringing unique strengths to the table. These companies are not merely developing new batteries; they are building the industrial infrastructure and forging the partnerships necessary to redefine grid-scale energy storage. Their success will dictate the pace of grid decarbonization.
Form Energy stands as the undisputed leader in the iron-air space. Based in Massachusetts, the company has garnered significant investment and attention for its robust technology and aggressive deployment strategy. Their iron-air battery system, designed for 100-hour discharge durations, is already being deployed in multi-gigawatt-hour projects across the United States. Their collaboration with utilities like Xcel Energy demonstrates a clear path from R&D to large-scale commercialization, validating the technology's readiness for prime time. Form Energy's approach emphasizes modular, containerized solutions, making integration into existing grid infrastructure relatively straightforward.
A compelling European contender is Ore Energy, a Dutch startup that made headlines in August 2025 by connecting the world's first grid-connected iron-air battery to the Delft University of Technology grid. This milestone, while smaller in scale than Form Energy's deployments, signifies a critical validation of the technology outside the U.S. Ore Energy has also secured a substantial deal with Budget Thuis to deploy 1 GWh of long-duration energy storage, with the initial 400 MWh phase scheduled for 2028. Their rapid progress underscores the global momentum behind iron-air chemistry.
While the primary focus is on dedicated iron-air battery companies, it's crucial to acknowledge the broader ecosystem. Utilities like Xcel Energy (NASDAQ: XEL) are not just customers; they are strategic partners, providing the testing grounds and the financial backing necessary to scale these technologies. Their willingness to invest in novel LDES solutions signals a strong demand pull from the market. Furthermore, the advancements in the broader metal-air battery market, projected to reach $3.41 billion by 2035, will create a fertile ground for innovation and competition. This isn't a zero-sum game; the rising tide of LDES lifts all chemistries capable of delivering.
| Company/Nation | Ticker/Currency | Key Sector | Market Cap/Size {.num-cell} | Signal |
|---|---|---|---|---|
| Form Energy | Private | Long-Duration Storage | ~$1B+ Valuation | BULLISH |
| Ore Energy | Private | Long-Duration Storage | Early Stage Funding | WATCH |
| Xcel Energy | XEL | Utility | $30.6B | NEUTRAL |
| United States | USD | Grid Infrastructure | $28T GDP | BULLISH |
| Netherlands | EUR | Energy Innovation | $1.1T GDP | WATCH |
Key Takeaway: While private companies like Form Energy and Ore Energy lead the direct development, the commitment of utilities and government initiatives in the U.S. and Europe provides critical validation and market pathways for iron-air battery commercialization.
The investment thesis for iron-air batteries is built on a bedrock of fundamental necessity and disruptive potential. We are not merely looking at an incremental improvement in battery technology; we are observing the emergence of a solution to the single largest bottleneck in the global energy transition: long-duration storage. The market is screaming for a technology that can store renewable energy for days, not hours, and iron-air batteries are answering that call with an elegant, cost-effective, and scalable chemistry.
The bull case is compelling. The projected growth from $247.31 million in 2025 to $14.27 billion by 2035 is not just a number; it represents a fundamental re-platforming of grid infrastructure. Companies that successfully commercialize and scale iron-air technology will capture a significant portion of this burgeoning market. Their competitive advantage stems from the use of ultra-abundant and cheap materials (iron, air, water), which insulate them from the price volatility and supply chain constraints plaguing lithium-ion. This translates into lower manufacturing costs, higher margins, and ultimately, more competitive pricing for utilities.
The bear case, while present, appears surmountable. The primary concerns revolve around the scaling of manufacturing and the long-term cycle life of these batteries under diverse operational conditions. While initial deployments and lab tests show promise, the transition from pilot projects to gigawatt-scale production always presents challenges. Additionally, the efficiency of round-trip energy conversion (how much energy is lost during charge/discharge) and the maintenance requirements over a 20-year lifespan will be critical factors. However, the sheer economic and environmental pressure to decarbonize the grid provides an immense tailwind for overcoming these hurdles.
Our conviction level is HIGHLY BULLISH on the long-term prospects of iron-air batteries as a foundational technology for grid decarbonization. The multi-day storage capability, combined with cost-effectiveness and material abundance, positions them as a superior solution for LDES compared to current alternatives. Investors should look for companies demonstrating clear pathways to scaled manufacturing, strong utility partnerships, and robust performance data from commercial deployments.
LONG Alternative Energy Infrastructure ETFs — The entire ecosystem supporting long-duration storage will benefit, including grid modernization and renewable project developers. SHORT Natural Gas Peaker Plant Developers — As iron-air batteries become cost-competitive, the economic rationale for new fossil fuel peaker plants will rapidly erode. WATCH Form Energy (Private) — The current leader, its future IPO or acquisition will be a significant market event.
While the promise of iron-air batteries is immense, the path to widespread adoption is not without its challenges. Every disruptive technology faces a crucible of technical, economic, and logistical hurdles, and iron-air is no exception. Understanding these potential pitfalls is crucial for any astute investor navigating this nascent market.
One primary concern revolves around round-trip efficiency (RTE). While iron-air batteries excel at long-duration storage, their RTE, which measures how much energy is recovered versus how much was put in, can be lower than that of lithium-ion batteries. This means more energy is lost during the charge and discharge cycles. Improving this efficiency is a key area of ongoing research and development, as even small gains can significantly impact the economic viability of large-scale deployments. A lower RTE could increase the overall cost of delivered energy, potentially eroding the cost advantage derived from cheap materials.
Another significant challenge is scaling manufacturing. Building gigawatt-hour scale battery factories is a capital-intensive and complex undertaking. While the materials are abundant, the specialized processes for manufacturing the iron electrodes and assembling the battery modules efficiently require significant investment and expertise. The industry will need to demonstrate that it can ramp up production quickly and cost-effectively to meet the projected demand, which is growing at a staggering 46.25% CAGR. Any delays or cost overruns in manufacturing could slow adoption.
Furthermore, long-term cycle life and degradation in real-world grid conditions remain critical areas of validation. While lab tests show promising "T80" metrics (time to 80% of original power) for perovskite solar cells, similar rigorous, long-term data for iron-air batteries in diverse climates and operational profiles is still accumulating. Utilities require storage solutions that can reliably perform for 15-20 years with minimal maintenance. Any unexpected degradation or performance issues could undermine confidence and slow deployment.
Regulatory and market frameworks also present a nuanced risk. While governments are increasingly supportive of LDES, the specific mechanisms for valuing and remunerating long-duration storage in wholesale electricity markets are still evolving. Without clear and consistent market signals, investor confidence and project financing could be impacted. Navigating these evolving regulatory landscapes will be crucial for the successful commercialization of iron-air technology.
Key Takeaway: While iron-air batteries offer compelling advantages, investors must monitor advancements in round-trip efficiency, manufacturing scalability, and long-term performance validation to mitigate potential investment risks.
For investors seeking to capitalize on the energy transition, the emergence of iron-air batteries presents a unique and compelling investment angle. This isn't just about picking a winning stock; it's about understanding a fundamental shift in energy infrastructure that will create ripple effects across multiple sectors. Building a portfolio of endurance means looking beyond the immediate, short-duration solutions and embracing the long game.
The most direct investment opportunity lies in the private companies pioneering iron-air technology, such as Form Energy and Ore Energy. While direct investment may be limited to venture capital or private equity for now, keeping a close watch on their funding rounds, strategic partnerships, and eventual public offerings or acquisitions is paramount. These companies are the direct beneficiaries of the market's insatiable demand for LDES. Their ability to scale production and secure long-term contracts will be critical indicators of their investment potential.
Beyond direct battery manufacturers, the broader alternative energy infrastructure sector stands to gain significantly. As iron-air batteries enable higher penetrations of renewables, demand for new solar and wind farms will surge. This creates opportunities in companies involved in renewable energy project development, engineering, procurement, and construction (EPC), as well as those manufacturing components for solar panels and wind turbines. The grid itself will require substantial upgrades to handle the new flow of energy, benefiting companies specializing in grid modernization, smart grid technologies, and transmission infrastructure.
Consider the utilities that are early adopters of iron-air technology. Companies like Xcel Energy (NASDAQ: XEL), by integrating these LDES solutions, are positioning themselves as leaders in grid decarbonization. This strategic foresight could lead to more stable earnings, reduced exposure to fossil fuel price volatility, and potentially higher valuations as they de-risk their energy portfolios. Investing in utilities with clear decarbonization roadmaps and active LDES deployment projects could offer a more conservative, yet still growth-oriented, approach.
Finally, the material science and manufacturing sectors will play a crucial supporting role. Companies innovating in advanced manufacturing techniques for battery components, or those involved in the supply chain for iron and other non-critical materials, could see increased demand. This is a multi-faceted investment play, where the core technology acts as a powerful gravitational force, pulling capital and innovation into its orbit. The rust revolution is not just about batteries; it's about building a more resilient, sustainable, and profitable energy future.
The energy grid, for too long, has been a fragile ecosystem, perpetually balancing on the knife-edge of supply and demand, often propped up by the very fossil fuels we seek to abandon. But the age of fleeting, four-hour storage is drawing to a close. The future of grid stability, and indeed, the full realization of renewable energy's potential, hinges on the ability to store power for days, not hours. This is where iron-air batteries step onto the stage, not as a fleeting innovation, but as a foundational pillar for the next era of energy.
The rust revolution is upon us, offering a robust, cost-effective, and environmentally benign solution to the grid's most pressing challenge. With a projected market soaring to $14.27 billion by 2035, the economic incentives are as clear as the environmental ones. Companies like Form Energy and Ore Energy are not just building batteries; they are building the very infrastructure of a decarbonized future, transforming the humble element of iron into the bedrock of energy independence.
The transition will not be without its friction—scaling manufacturing, optimizing efficiency, and navigating evolving regulations will test the mettle of these innovators. Yet, the sheer necessity of long-duration storage, coupled with the inherent advantages of iron-air chemistry, creates an irresistible force. Utilities are already committing to gigawatt-hour deployments, signaling a clear market pull that will accelerate development and deployment.
LONG Form Energy (Private) — The clear leader in iron-air, poised for significant growth and market capture. SHORT Legacy Peaker Plant Manufacturers — Their market will erode as iron-air provides a superior, cleaner alternative. WATCH Xcel Energy (NASDAQ: XEL) — A utility actively integrating LDES, offering a stable investment in the transition.
As the sun sets on the age of fossil fuels, and the wind whispers promises of clean power, will your portfolio be forged in the rust of revolution, or merely gather dust on the sidelines?
Iron-air batteries are emerging as a formidable contender in the long-duration energy storage landscape, promising to revolutionize how grids manage renewable energy. Unlike their lithium-ion counterparts, which excel in short-duration applications, iron-air batteries are designed for multi-day storage, offering up to 100 hours of discharge. This capability is critical for balancing intermittent renewable sources like solar and wind, addressing prolonged periods of low generation, and ensuring grid reliability. The technology leverages abundant, inexpensive, and non-toxic materials—iron, water, and air—making it inherently safer and more sustainable than batteries reliant on scarce minerals like lithium and cobalt. The global iron-air battery market, valued at approximately $0.65 billion in 2025, is projected to surge to $4.60 billion by 2033, exhibiting a compound annual growth rate (CAGR) of 28.20% from 2026 to 2033. Another estimate projects an even more aggressive growth, from $247.31 million in 2025 to $14.27 billion by 2035, at a CAGR of 46.25%. This explosive growth is fueled by increasing investments in renewable energy infrastructure, grid modernization, and the urgent demand for cost-effective, long-duration storage solutions.
Company: Form Energy Ticker Symbol: Not publicly traded (Private Company)
While Form Energy isn't publicly traded, it stands out as the undisputed leader in the iron-air battery space, making it a crucial company for investors to watch for potential future IPOs or indirect investment opportunities. The company has garnered significant attention and investment, having raised over $1.2 billion in funding and achieving a valuation of $3.42 billion as of October 2024. Their first commercial product is an iron-air battery system capable of cost-effectively storing energy for up to 100 hours. This multi-day storage capability is a game-changer for grid stability, addressing the intermittency of renewables far beyond what lithium-ion batteries can achieve.
Why they benefit: Form Energy's competitive advantage lies in its proprietary iron-air battery technology, which uses abundant, low-cost materials (iron, water, and air) to deliver long-duration storage at a fraction of the cost of lithium-ion systems. This cost efficiency, combined with enhanced safety due to non-flammable materials, positions them perfectly for utility-scale deployment. They are also committed to American manufacturing, with their first high-volume facility, Form Factory 1, located in Weirton, West Virginia. This strategic move not only supports local economies but also mitigates supply chain risks often associated with global battery production.
Current Market Position and Financials Overview: As a private company, detailed financials are not publicly disclosed. However, their significant funding rounds and valuation indicate strong investor confidence. They have secured major agreements, including a 12 GWh deal for AI data centers with Crusoe in March 2026, demonstrating substantial commercial traction. Form Energy is in the early commercialization stage, with over 75 GWh of iron-air capacity under commercial agreement.
Investment Thesis: Savvy investors should keep a close eye on Form Energy. Their technology directly addresses the critical need for long-duration energy storage, a bottleneck in the transition to a fully renewable grid. The sheer scale of their potential impact, coupled with their cost advantages and commitment to domestic manufacturing, makes them an incredibly attractive prospect. Any future public offering would likely be met with significant investor interest, given their disruptive potential and strong market position. Indirect investment through their existing investors, such as Breakthrough Energy Ventures, TPG Rise Climate, and GIC, could also be considered.
Risk Factors: The primary risk for Form Energy, and indeed the entire iron-air battery sector, is the early stage of commercialization. While agreements are in place, actual installed operating experience is still limited compared to established lithium-ion. This lack of long-term operational data can affect bankability and broader market adoption. Additionally, iron-air batteries typically have lower round-trip efficiency and slower response times compared to lithium-ion, making them unsuitable for all applications. Ensuring consistent and clean air supply, along with managing electrolyte stability and thermal profiles, presents engineering challenges.
Company: ESS Tech, Inc. Ticker Symbol: GWH (NYSE)
ESS Tech, Inc. is a long-duration energy storage company specializing in iron flow battery technology, a close cousin to iron-air. While iron flow batteries share some advantages with iron-air, such as using earth-abundant materials and offering long-duration storage, ESS Tech's current market performance suggests it may struggle to keep pace with the rapid advancements and market penetration of iron-air solutions.
Why they're threatened: The rapid ascent of iron-air batteries, particularly from companies like Form Energy, poses a significant threat to ESS Tech. Iron-air technology is gaining traction for its ultra-low material cost thesis and ability to provide multi-day storage, directly competing with iron flow solutions. While iron flow batteries offer a longer asset life than Li-ion and can last 20 years or more without capacity fade, the market is increasingly valuing the specific characteristics of iron-air for multi-day grid applications. Furthermore, ESS Tech's market capitalization has seen a significant decline, indicating investor skepticism. As of July 2026, ESS Tech has a market cap of approximately $26 million USD, a substantial decrease over the past year.
Current Market Position and Exposure: ESS Tech's market capitalization has plummeted, decreasing by -29.5% in the last 12 months and -10.69% in the last 30 days as of July 2026. Its stock price is hovering around $0.88-$0.90 per share. The company's trailing twelve-month revenue as of March 2026 was $2.7 million, with a net income of -$61.3 million, indicating it is operating at a significant loss. While ESS Tech is recognized as a player in the flow battery market, the competitive landscape is intensifying with numerous startups and established players vying for market share.
Investment Thesis: Investors should approach GWH with extreme caution. The company's declining market cap and significant financial losses, coupled with the rising tide of iron-air battery technology, paint a challenging picture. While iron flow batteries have their merits, the market appears to be favoring the cost and duration advantages offered by iron-air. The capital-intensive nature of battery manufacturing, combined with intense competition and the need for continuous innovation, makes ESS Tech a high-risk investment. Without a clear strategy to differentiate itself or significantly improve its financial performance, GWH could continue to struggle in this evolving market.
Potential Catalysts for Decline: Further market penetration by iron-air battery companies, particularly Form Energy, could accelerate ESS Tech's decline. Any significant breakthroughs in iron-air battery efficiency or manufacturing scale-up could further erode the competitive position of iron flow batteries. Additionally, continued financial losses and an inability to secure substantial new contracts or funding could lead to further stock price depreciation and liquidity concerns. The slower response time of flow batteries compared to other technologies might also limit their application in certain grid services, further constraining market opportunities.
In conclusion, the long-duration energy storage market is on the cusp of a major transformation, with iron-air batteries leading the charge. While this presents immense opportunities for innovators like Form Energy, it also signals a challenging road ahead for companies that fail to adapt or innovate quickly enough, such as ESS Tech. The coming years will undoubtedly be a fascinating period of competition and technological evolution in the alternative energy sector.
As always, the future belongs to those who prepare for it today. Stay curious, stay invested, and stay tuned.
— The Vetta Research Team
Precedence Research, "Iron-Air Battery Market Size, Share, Growth, Report 2024-2035," Precedence Research, 2024, https://www.precedenceresearch.com/iron-air-battery-market Form Energy, "Our Technology," Form Energy, 2024, https://formenergy.com/technology/ U.S. Department of Energy, "DOE Awards $4.3 Million to Multiday Iron Air Demonstration (MIND) Project," Office of Clean Energy Demonstrations, June 2024, https://www.energy.gov/oced/articles/doe-awards-43-million-multiday-iron-air-demonstration-mind-project Form Energy, "Projects," Form Energy, 2024, https://formenergy.com/projects/ Form Energy, "How Our Battery Works," Form Energy, 2024, https://formenergy.com/technology/how-our-battery-works/ Xcel Energy, "Xcel Energy and Form Energy Partner on Long-Duration Energy Storage," Xcel Energy Newsroom, 2024, https://newsroom.xcelenergy.com/xcel-energy-and-form-energy-partner-on-long-duration-energy-storage/ Ore Energy, "Ore Energy connects world's first grid-connected iron-air battery to TU Delft grid," Ore Energy News, August 2025, https://ore.energy/news/ MarketsandMarkets, "Metal-Air Battery Market - Global Forecast to 2035," MarketsandMarkets, 2024, https://www.marketsandmarkets.com/Market-Reports/metal-air-battery-market-102027552.html LONGi, "LONGi Solar Achieves 34.85% Perovskite-Silicon Tandem Cell Efficiency," LONGi News, April 2025, https://www.longi.com/us/newsroom/news/longi-solar-achieves-34-85-perovskite-silicon-tandem-cell-efficiency/ BloombergNEF, "Long-Duration Energy Storage Outlook," BloombergNEF, 2024. (General industry report, specific URL not publicly available for this general citation) International Energy Agency (IEA), "Energy Storage Outlook," IEA, 2025. (General industry report, specific URL not publicly available for this general citation) U.S. Energy Information Administration (EIA), "Electricity Storage Data," EIA, 2024, https://www.eia.gov/electricity/monthly/epm_table_grapher.php?t=epmt_6_01 McKinsey & Company, "The future of energy storage," McKinsey & Company, 2023, https://www.mckinsey.com/industries/electric-power-and-natural-gas/our-insights/the-future-of-energy-storage World Economic Forum, "The Case for Long-Duration Energy Storage," World Economic Forum, 2024, https://www.weforum.org/agenda/2024/01/long-duration-energy-storage-ldess-climate-change/
All sources were verified at the time of publication. For specific citations, contact research@vettainvestments.com.
Disclaimer: The information provided in this article is for educational and informational purposes only and does not constitute investment advice, a solicitation, or a recommendation to buy or sell any security. Vetta Investments does not guarantee the accuracy, completeness, or timeliness of any information presented. Past performance is not indicative of future results. All investments involve risk, including the possible loss of principal. Readers should conduct their own due diligence and consult a qualified financial advisor before making any investment decisions. Vetta Investments may hold positions in securities mentioned in this article.