> ## Content Index > Fetch the complete content index at: https://nexi.fund/llms.txt > Use this file to discover other available public pages before exploring further. # Voya Energy's $35M Bet to Turn Scrap Aluminum Into Clean Power - URL: https://nexi.fund/voya-energy-metal-fuels/ - Published: 2026-11-14T17:30:00.000Z - Updated: 2026-11-14T17:30:00.000Z - Description: Voya Energy raised $35 million to prove that scrap aluminum can fuel backup power. Inside its generator, the metal reacts with air and water to produce firm electricity with no combustion, no exhaust, and no grid connection. - Author: Nexi.fund Labs - Tags: Energy & Climate, #mode-5, #hook-character, #track-E, #layout-scene-weave Richard Wang has already built one battery company. Cuberg, the startup he founded, was bought by Northvolt — a clean exit in the lithium-ion race. His next bet heads somewhere stranger. He wants to turn scrap aluminum into fuel. Voya Energy, the Hayward, California company Wang runs with co-founders Matt Horton and Steven Kaye, raised $35 million in August to prove the idea. The thesis is compact. Aluminum, one of the most traded and recycled metals on Earth, releases electricity through a controlled electrochemical reaction when paired with the right electrolyte. No combustion. No exhaust. No grid connection required. The round was led by Energy Impact Partners, with John Doerr, Founders Fund and Mantis VC alongside. Those investors are buying a direct shot at the diesel generator, the default answer for backup and off-grid power since the 1930s. ## The backup market diesel owns Every new data center campus has the same problem: the grid cannot connect it fast enough. More than 2,000 gigawatts of capacity is waiting in US interconnection queues, [as we wrote in November](https://nexi.fund/interconnection-queue-bottleneck-2026/). While projects wait, developers fall back on diesel for backup and bridge power. Diesel has survived this long because it is energy-dense, cheap to store, and starts in seconds. It is also loud, polluting, and increasingly hard to permit near the communities that host data centers. A campus that needs hundreds of megawatts of backup now needs an air-quality exemption it may no longer get. Voya's argument is that aluminum does the same job without the smoke. The fuel is made from low-grade scrap, pelletized, shipped in ordinary containers, and stored for decades without degrading. ## Scrap in, electricity out Inside the generator, aluminum pellets meet air and water through a proprietary electrolyte. The reaction is electrochemical rather than thermal, which is why nothing burns and why there is no NOx, PM2.5 or CO2 at the point of use. The hardware is modular. A 50-kilowatt power module stacks into a 250-kilowatt commercial unit; forty modules fill a 2-megawatt industrial generator inside a standard 20-foot container. A separate 10-foot fuel container holds roughly 100 megawatt-hours. The reaction leaves aluminum trihydrate behind, a stable white powder the company calls ATH. Near term, Voya plans to sell it as industrial feedstock for flame retardants and water treatment. Longer term, it wants a closed loop: recycle the ATH back into fuel-grade aluminum using stranded, near-free energy. The obvious question is why metal-air batteries have not already won this market. They have a checkered history. Aluminum-air and zinc-air cells have been proposed for decades and repeatedly stalled on corrosion, byproduct fouling, and the cost of regenerating spent fuel. Voya's own California filing concedes as much, naming metal corrosion and byproduct buildup as the historical barriers. Its answer is a proprietary electrolyte and precision fuel metering; the proof is a working cell, not a slide deck. ## The number that matters For investors, the efficiency figure is the headline. Voya's current validation converts about 57% of the fuel's energy into electricity, against roughly 35% for a conventional diesel generator. 57% conversion efficiency ↑ 63% vs diesel #### Aluminum fuel-to-electricity efficiency 57% conversion against roughly 35% for a conventional diesel generator · *Voya Energy / Argus Media, 2026* At scale, the density claim is more aggressive: 100 megawatts of generation and 10 gigawatt-hours of stored fuel per acre, four times more compact than diesel fleets and a hundred times more compact than grid-scale batteries. Those are company figures describing the eventual design; independent measurement is still pending. We are skeptical of the marketing numbers and open to the mechanism. A generator that beats diesel on efficiency while running on a non-flammable, storable fuel has a genuine niche. The open question is cost. Voya's California EPIC filing targets under $500 per kilowatt of system cost and a levelized cost under $0.30 per kilowatt-hour — targets, not yet results. Diesel's rivals keep multiplying, which shapes how Voya will be judged. Hydrogen fuel cells promise clean backup but need stored hydrogen and new refueling infrastructure. Long-duration batteries — Form Energy's iron-air cells, the sodium-ion packs GM backed earlier this year — stretch storage hours but stay capital-heavy per megawatt. Voya sits in the gap: an energy-dense solid fuel with a generator that starts like a diesel and emits like a battery. ## A roadmap that runs to 2030 The company's timeline is unusually specific for a hardware startup. The thesis formed with Energy Impact Partners in 2024\. A $13 million seed followed in July 2025, funding the lab where a novel cell produced its first electricity. This year's Series A scaled cells thirty-fold and opened a 28,000-square-foot pilot factory. ``` CHRONICLE: Voya Energy — metal fuels ──────────────────────────── 2024 · 💡 Thesis forms with Energy Impact Partners 2025 · 🧪 $13M seed; first electricity from a novel cell 2026 · 🏭 $35M Series A; cells scale 30x; pilot factory opens 2027 · 🚀 Containerized generators deployed to pilot sites ◉ NOW · Strategic CVC: Idemitsu (Oct), MOL Switch (Nov) 🔥 NEXT · First customer power 2028; commercial launch 2029 ``` Company roadmap as published by Voya Energy Two strategic investors arrived in the past six weeks and shift the story beyond data centers. Idemitsu, the Japanese energy group, invested through its CVC arm in October. MOL Switch, the venture arm of shipping giant Mitsui O.S.K. Lines, followed in November, eyeing shore power at congested ports and, later, aluminum-fueled propulsion at sea. > Electricity demand is rising faster than the grid can expand, and businesses cannot afford to wait years for the power they need.— Richard Wang, co-founder and CEO, Voya Energy Nearly a dozen companies across data centers, industry and utilities are signed up for pilot demonstrations. First deployments land in 2027, first paying customers in 2028, commercial launch in 2029. 🎯 **The wedge is diesel backup.** A non-flammable, storable fuel fits multi-day firm power where batteries run out of hours. **Efficiency and density claims are company figures.** The $500/kW and $0.30/kWh targets stay targets until a deployment proves them. **Strategic CVC money is the real signal.** Idemitsu and MOL Switch lend industrial credibility to a category with no first revenue before 2028\. There is a cleaner way to state what Voya is selling. It is packaging energy as a solid that sits in a shipping container until someone needs it — the same trick the diesel tank perfected, minus the combustion. Whether that becomes a category or stays a niche depends on one measurement: cost per delivered kilowatt-hour at scale, against a diesel fleet that is cheap and, for now, everywhere. ## Sources [ A California Startup Bets on Aluminum as Cleaner Fuel for Data Centers Bloomberg's reporting on Voya's $35 million round and its bid to displace diesel backup. Bloomberg ](https://www.bloomberg.com/news/articles/2026-08-26/startup-bets-on-aluminum-as-cleaner-fuel-to-power-data-centers?ref=nexi.fund) The broadest independent account of the funding and the thesis. [ Voya Energy Unveils a New Metal Fuels Energy System, Closes $35 Million Series A The company's full release with the technical specifications, investor list and founder backgrounds. Voya Energy ](https://www.voya.energy/news/voya-energy-unveils-a-new-metal-fuels-energy-system-closes-35-million-series-a?ref=nexi.fund) Primary source for the 57% efficiency and 2MW container figures. [ Idemitsu Invests in Voya Energy to Explore Aluminum-Metal Power Idemitsu Kosan's strategic CVC investment and its interest in pilot deployments and fuel distribution. Idemitsu Kosan ](https://www.voya.energy/news/idemitsu-invests-in-voya-energy-to-explore-a-novel-energy-generation-approach-utilizing-aluminum-metal?ref=nexi.fund) The October strategic investment that brought an industrial energy group on board.