Full-Time
Updated on 9/4/2026
Iron-air multi-day energy storage systems
No salary listed
Weirton, WV, USA
Hybrid
Three days on-site per week are required; relocation assistance is available.
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Form Energy develops and sells energy storage systems designed for long-duration use in the electric grid. Its main product is an iron-air battery that can store electricity for up to about 100 hours, offering a cost-effective alternative to traditional power plants and enabling a fully renewable grid. The system works by storing energy chemically in iron and air, allowing electricity to be released when needed over multi-day stretches, with a focus on scalable manufacturing and system integration to meet utility and municipal needs. The company differentiates itself by pursuing low-cost, multi-day storage on a large scale, leveraging iron as a plentiful material to deliver affordable, reliable energy storage compared to conventional approaches. Its goal is to support deep decarbonization of the electric system by providing reliable, year-round renewable power through affordable energy storage and deployment alongside grid infrastructure.
Company Size
501-1,000
Company Stage
Series G
Total Funding
$2.3B
Headquarters
Somerville, Massachusetts
Founded
2017
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100% of medical, dental, & vision premiums
HSA & Flexible FSA
Generous PTO
Employee resource program
Parental leave
Commuter benefits account
Stock options
Equity
401k
Profession development budget
Life & disability insurance
Five Cambridge and Somerville climate tech companies receive state tax incentive. The companies will be able to put this money toward expansion through advancing research and projects, hiring more employees and offering stipends Somerville's Form Energy received the majority of a $6 million tax incentive for job creation granted to five climate tech innovation companies in Cambridge and Somerville. Form, which produces high-capacity batteries used for storing renewable energy at utility scale, earlier this year was identified as the recipient of a billion-dollar contract for energy storage from Google, and recently received $750 million in venture capital to help expand its battery factory in West Virginia. Form received $5.6 million in credits from the Massachusetts Clean Energy Center, which gave $27.2 million in tax incentives to 18 companies across the state to create more jobs. In addition to Form, four other local companies received grants. Pascal Technologies and Mantel Capture in Cambridge as well as Eden Geopower in Somerville received $100,000 in tax credits. Somerville's Vertical Semiconductor received $120,000. Some recipients also receive incentives for capital investment, specifically for leasing or buying facility space. MassCEC selected companies with a clear business plan, evidence of continued revenue gains, and were creating technology that would hinder the impacts of climate change and emissions throughout the world," said Mike Condon, the director of economic growth and partnership at MassCEC, in an interview with Cambridge Day. Condon said MassCEC's grant program, modeled after the Mass Life Sciences Center's program, is a way to help grow and retain climatetech companies in Massachusetts. Form Energy. The Somerville-based company Form Energy produces iron-air batteries designed to deliver electricity for 100 hours to create a reliable electric grid year-round. The $5.6 million incentive allowed Form to hire new employees, bringing the company's employee count to 240. Form was originally developed at MIT before it was further developed at the Somerville climatetech incubator Greentown Labs as well as the Cambridge incubator The Engine. Eden Geopower. Eden Geopower, located in Somerville, developed a "first-of-its-kind" electric reservoir stimulation technology, which uses electric pulse drilling to increase the recovery of natural resources in the ground. Overall, the technology aims "to extract natural resources out of the ground, whether its critical minerals, geothermal energy, geologic hydrogen," said Desi Hambrock, Eden Geopower Chief of Staff. The $100,000 tax incentive allows Eden Geopower "to execute our goals more quickly" by hiring more employees, Hambrock said. Overall, Eden's goal is to develop and generate "energy and resources in a way that is very low cost, but at the same time, has huge environmental impact," as is the goal of all climatetech companies, Hambrock said. Mantel Capture. Mantel Capture in Cambridge created a carbon capture system that uses molten borate salt to capture greenhouse gases in industrial boilers, kilns, and furnaces before they enter the atmosphere. The MassCEC incentive will be "super helpful" as Eden builds a bigger team at its facility at 750 Main Street in Cambridge, said Danielle Rapson, the chief operating officer of Mantel Capture. Particularly, tax incentives "really help" Eden give their interns full-time jobs, she said. Vertical Semiconductor. Located in Somerville, Vertical Semiconductor, which was originally started at MIT, is developing a semiconductor power chip that reduces energy losses in data centers. The power chip, made with vertical gallium nitride, essentially makes power systems "much more efficient," said Cynthia Liao, the co-founder and CEO of Vertical Semiconductor. The power chip reduces energy losses inside a data center by about 80 percent, Liao said. She said right now, 20 to 30 percent of energy in a data center never makes it to the center's computers. Liao is "super excited" about the $120,000 tax incentive because it allows Vertical Semiconductor to create new semiconductor engineering and research and development positions and offer stipends for employees who relocate to Somerville. Pascal Technologies. Pascal Technologies is developing efficient, non-polluting refrigerants that allow HVAC systems to put less strain on the electric grid. More efficient refrigerants are needed because "as the world needs more and more cooling, the amount of super-polluting fluorinated gas refrigerants used in these systems will increase while the extra energy usage will strain our electrical grid," said Adam Slavney, co-founder and CEO of Pascal Technologies. Tax incentives generally allow the Cambridge-based company to "offset the high cost-of-living," Slavney said. The MassCEC incentive specifically allowed Pascal to hire an additional employee, bringing its total employees to 15. A stronger. Please consider making a financial contribution to maintain, expand and improve Cambridge Day. Cambridge Day is now a 501(c)(3) nonprofit and all donations are tax deductible. Please consider a recurring contribution.
What's behind Form Energy's downgraded valuation. Form raised its Series G at a $1.75-billion pre-money valuation, down from $3 billion in 2024 - but it's isn't necessarily cause for alarm. August 20, 2026 Photo credit: Form Energy Hundred-hour battery maker Form Energy raised a $750 million Series G last week, amid rumors that the company is preparing to go public in 2027. The financing brings Form's total equity raised to more than $2 billion - which is just behind home battery company Base Power, which recently raised a $1 billion Series D. Form's fundamentals, order books, and political tailwinds are all at all-time highs. Its first commercial-scale installation is underway in Minnesota. Manufacturing is scaling up at Form's West Virginia factory, and Biden-era tax credits key for energy storage made it through the Republican budget overhaul last summer. And, despite chaos at the Department of Energy, Form's promised federal funding has stayed on track. (CEO Mateo Jaramillo recently appeared on stage alongside Energy Secretary Chris Wright on a DOE tour focused on energy affordability.) And yet, Form raised its latest round at a $1.75-billion pre-money valuation, according to Axios: a significant downvaluation from the $3-billion pre-money valuation at which the company raised its Series F in October 2024. But the down round isn't necessarily cause for alarm, an investor in the round told Latitude Media on background, who added that it's not a reflection of waning investor faith in iron-air batteries, or a sign that demand for next-gen power solutions to power data centers is being usurped by established solutions. Instead, the raise is ultimately a "lagging indicator" of how tighter private markets and an AI-obsessed capital cycle are affecting even more mature startups. In 2024, there was significantly more capital "swimming around" for clean tech, they said, while today, the capital interested in investing in anything other than artificial intelligence is smaller. And Form, the investor added, isn't considered a direct "AI beneficiary." Ironically, it's Form's versatility that gave investors conviction in the company to start with, they added. "The [total addressable market] for Form's product is just immense...anywhere that you can put a gas peaker you can put a Form battery," they explained. Additionally, Form's "e-peaker" doesn't require building gas pipelines and has lower operating costs than a traditional peaker. But in a world where AI data centers never materialized, Form's pipeline "would have looked roughly as it does, anyways." North American PPA market report: july 2026. Bring clarity to your clean energy strategies, with transparent pricing and unique insights for North American PPA markets, in this updated report from S&P Global Energy. The public markets are already reflecting Form's experience. Fuel cell maker Bloom Energy, for example, which is similarly working to capitalize on the data center power frenzy, has many fundamental data points that indicate its sales prospects are higher today than the beginning of the year, the analyst pointed out. However, while Bloom stocks were trading as high as $350 just a few months ago, they've now dropped to around $200. Emerging, unproven tech solutions may face tougher terms from lenders as the largest data center projects turn to multi-billion dollar debt packages, the investor acknowledged. But that's not the dynamic at play in Form's valuation, partly because Form's first major data center adjacent deal, with Xcel Energy and Google, is really a utility deal, meaning the project will sit in the utility's rate base, backed by Google's payments, rather than relying on project finance. Ultimately, Form is facing an age-old problem for tech companies: "There's a pocket of money that needs to invest in companies at the junction that Form is at, that doesn't currently exist," the investor said. "Twenty years ago, the public markets did that, but companies just don't go public that early as often, and that's why fundraisers have been much more challenging for capex-heavy companies." * Maeve Allsup Maeve Allsup is Latitude Media's founding reporter. She was previously a tech reporter at Morning Brew, where she covered tech policy and regulation, as well as the EV industry. Related Reading Stay ahead of energy's next frontier. Subscribe for free:
Senator Collins visits Lincoln energy storage project with energy secretary Wright. U.S. Senator Susan Collins joined U.S. Secretary of Energy Chris Wright and local leaders in Lincoln on Aug. 19 to learn more about Form Energy's plans for a new energy storage facility at the Lincoln Technology Park, located at the site of the former Lincoln Paper & Tissue Mill. The project has received nearly $150 million in federal funding through the Grid Resilience and Innovation Partnerships Program, which was established by the 2021 bipartisan infrastructure law. Collins was part of the group of ten senators who negotiated that law. "Revitalizing Maine's former mill sites is a priority of mine, and this project holds tremendous promise for Lincoln and the surrounding communities," said Senator Collins. "It will not only breathe new life into a vacant former mill site, but also create new jobs and strengthen energy security and grid reliability throughout central Maine. Once completed, the facility, the first of its kind in New England, will be able to provide enough electricity to power approximately 65,000 homes for 100 hours. As Chair of the Senate Appropriations Committee, I am committed to advocating for Maine to remain at the forefront of energy innovation and resilience." Collins secured a total of $7.5 million through her role on the Senate Appropriations Committee for infrastructure improvements and continued redevelopment at Lincoln Technology Park. This includes $3.5 million allocated in fiscal year 2024 and $4 million in fiscal year 2026. Collins draws from a background in a family lumber business with a history of public service; she promotes environmental protection linked to Maine's economy by supporting sustainable practices across tourism, recreation, forestry, fishing and agriculture; she seeks to improve health care access, foster small business development, enhance job opportunities, advance education efforts, strengthen transportation networks across Maine as well as bolster national defense capabilities while assisting seniors; she serves as chair of the Senate Appropriations Committee while holding positions on both Health Education Labor & Pensions Committee as well as Intelligence Committee; she represents Maine securing resources for local operations like shipbuilding & manufacturing; additionally advancing initiatives designed to enhance first responder capabilities, fight domestic terrorism & improve cybersecurity - all according to, the official website.
Iron-air US LDES startup Form Energy secures US$750 million Series G financing. August 18, 2026 US startup Form Energy has secured a US$750 million Series G financing round led by global investment management firm T. Rowe Price. Announced 12 August, Form said the proceeds from the Series G will be used to accelerate its manufacturing scale-up through its first factory, called Form 1, in Weirton, West Virginia, and advance commercial deployments of its iron-air "multi-day" battery energy storage systems (BESS). T. Rowe Price previously led Form's Series F round, the Series G brings the company's total equity raised to over US$2 billion. New investors in the Series G included Sequoia Capital, Janus Henderson, Franklin Templeton, and PEAK6 Investments. The round also received continued support from existing investors including Prelude Ventures, Engine Ventures, TPG Rise Climate, Capricorn's Technology Impact Funds, Breakthrough Energy Ventures, Facebook and Meta co-founder Dustin Moskovitz and his wife, philanthropist Cari Tuna, Gigascale Capital, Coatue, Energy Impact Partners, NGP, GE Vernova, Blindspot Ventures, and M&G Catalyst Fund. Notably, when Form first emerged, it was widely considered to be in a category of one, with its iron-air long-duration energy storage (LDES) technology. While the company is thought to hold extensive patents and IP for its proprietary battery, other iron-air battery startups have emerged. India-headquartered Meine Electric claims it is "APAC's first iron-air LDES innovator" and recently announced a pilot project at the Simhadri Thermal Power Station, owned by NTPC, India's biggest electric power utility. Dutch iron-air startup Ore Energy raised US$43 million in a Series A funding round earlier this month. As with Form Energy's battery, Ore's technology works by essentially rusting and derusting metal. Axios reported that Form's Series G funding round was completed at a US$1.75 billion pre-money valuation. That valuation is down "from a roughly US$3 billion pre-money valuation achieved during its previous fundraising cycle in October 2024, reflecting a down round despite strong commercial momentum." Form's recent activity. The company noted its recent commercial agreements and increase to its backlog from approximately 20GWh to 80GWh. It also announced in March, an agreement to jointly deploy a 10MW/1,000MWh iron-air BESS in the northwest of Ireland with developer FuturEnergy Ireland. Form Energy stated that in order to support its growth, it expanded its executive leadership team, appointing chief financial officer Navneet Govil and chief operating officer Wes Sloan. Battery Asset Management Summit USA 2026 will be held 15-16 September in Garden Grove, California, hosted by Energy-Storage.news publisher Solar Media (part of the Informa Group). The agenda emphasises addressing the roles of AI, cybersecurity, and second-life applications, broken down into two tracks: Technical Asset Management and Commercial Asset Management. This year, the conference is also co-located with Solar & Storage Finance Summit USA. Visit the official site for more details. 25 August 2026 Sydney, Australia Building on its successful global portfolio of energy storage network events including its successful Energy Storage Summit Australia, combined with the exponential buildout of large-scale energy storage, Energy Storage International is delighted to return for the inaugural Battery Asset Management Summit Australia in Sydney (25-26 August 2026). The Battery Asset Management Summit has been received worldwide with huge optimism and has quickly established itself as leading event series for connecting asset owners with optimisers, software providers, and many more. 8 September 2026 Barcelona, Spain Battery & Energy Storage Tech Europe (BESTE) is Europe's industrial scaling platform for stationary and industrial battery applications - not EVs. Taking place 8-9 September 2026 at Fira de Barcelona, BESTE brings together utilities, IPPs, energy-intensive industries, data centres, ports, rail, maritime, defence and aerospace OEMs - all deploying or integrating battery storage at scale. Over 100 companies already confirmed - including EDP Renewables, Acciona, Endesa, Naturgy, Neoen, Galp, Basquevolt and Veolia - alongside 40+ expert speakers and international institutional support from BEPA, BVES, LDES and Volta Foundation. Where Europe's battery & ES ecosystem turns projects into reality. 15 September 2026 San Diego, USA You can expect to meet and network with all the key industry players again in 2025 from major US asset owners, operators, RTOs and ISOs, optimizers, software and analytics providers, technical consultancies, O&M technology providers and more. 15 September 2026 Berlin, Germany Launching September 2026 in Berlin, Energy Storage Summit Germany is a new standalone event dedicated to Germany's energy storage market. Bringing together investors, developers, policymakers, TSOs, manufacturers and optimisation specialists, the Summit explores the regulatory shifts, revenue models, financing strategies and technology innovations shaping large-scale deployment. With Germany targeting 80% renewables by 2030, it offers a focused platform to connect with the decision-makers driving the Energiewende and the future of utility-scale storage. 13 October 2026 London, UK Now in its second edition, the Summit provides a dedicated platform for UK & Ireland's BESS community to share practical insights on performance, degradation, safety, market design and optimisation strategies. As storage deployment accelerates towards 2030 targets, attendees gain the tools needed to enhance returns and operate resilient, efficient assets.
Weirton, WV – August 12, 2026 – Form Energy, Inc., an American technology company developing and commercializing a new class of cost-effective, multi-day energy storage systems, announced today a $750 million Series G financing round led by T. Rowe Price, which also led the company’s prior Series F round. This round brings Form Energy’s total […]