On a forward operating base, the most dangerous cargo is often the fuel truck. Diesel convoys are slow, flammable, and a magnet for ambush. NovaSpark Energy, a Houston seed-stage hardware company founded in 2022, is pitching the Department of Defense on an alternative: a mobile rig that pulls humidity out of the air, splits the water, and produces hydrogen on site, on demand, with no tanker in sight.
The company won a contract earlier this year with the Defense Innovation Unit to develop exactly that kind of system, framed around what the military calls Expedient Basing Challenges, the problem of standing up energy at a remote outpost without a supply line behind it [Yahoo Finance]. In June, Boot64 Ventures led a seed round into the company, with Maven Scouts also on the cap table, to push the atmospheric hydrogen platform toward defense and critical-infrastructure deployments [GlobeNewswire, June 2025]. Total disclosed funding is roughly $300,000 [PitchBook], a modest check by hardware standards and a signal that this is still very much a technical-risk stage of the story rather than a scale-up.
The bet
NovaSpark's product, as described in its public profile, is a mobile hydrogen generation micro-grid and fueling system aimed at aerospace, defense, military, and energy customers [Bloomberg]. The wedge is atmospheric water capture married to electrolysis in a transportable form factor, what the company calls reliable energy from air, on demand, anywhere [Crunchbase]. In practice that means a unit you can drop near a runway, a disaster zone, or a remote radar site and produce hydrogen for fuel cells, generators, or refueling without trucking in either water or diesel.
The customer logic is tight. The U.S. military spends a meaningful fraction of its operational risk and budget moving fuel to where it is needed, and the Defense Innovation Unit exists precisely to fund commercial technologies that can shorten that tether. A hydrogen generator that works off ambient humidity is the kind of thing DIU is structurally inclined to fund early and, if the prototype holds up, to scale through follow-on contracts with the services. NovaSpark is selling autonomy from the supply chain, which in defense procurement is worth more per kilogram than the hydrogen itself.
Why it could be big
Military energy is the rare cleantech market where the customer is willing to pay a steep premium for resilience rather than for carbon. The Army's own Operational Energy strategy has for years emphasized reducing fuel demand at the tactical edge, and hydrogen fits the brief because it can be generated locally and used in fuel cells that run quieter and cooler than diesel gensets. If NovaSpark's hardware works at field-relevant scale, the second market opens almost by itself: disaster response, remote telecom sites, mining camps, island microgrids, anywhere diesel logistics is the binding constraint.
Boot64 Ventures' thesis around defense and critical infrastructure tracks that arc, and the firm's decision to lead the round suggests an appetite for hardware bets with government anchor customers [GlobeNewswire, June 2025]. The defense-first go-to-market also sidesteps the most painful part of green hydrogen economics in the civilian world, namely the brutal cost competition with grey hydrogen at $1 to $2 per kilogram. A military buyer comparing NovaSpark's output to the all-in cost of trucked diesel in a contested environment is doing very different math.
Back of envelope
A rough sketch of why the unit economics can pencil for the Pentagon even if they would not for a refinery:
Delivered diesel at forward base ($/gal equivalent) | 40 | USD
Commercial diesel ($/gal) | 4 | USD
Grey hydrogen ($/kg) | 2 | USD
Green hydrogen target ($/kg) | 5 | USD
The Defense Science Board has long pegged the fully burdened cost of fuel at a forward operating base at something on the order of $40 per gallon equivalent once you count convoy security, airlift, and losses (estimated, drawing on widely cited DSB figures). Against that benchmark, even an expensive kilogram of on-site hydrogen looks cheap, and the calculus that kills civilian green hydrogen projects simply does not apply.
The team and traction
Rick Harlow is co-founder and Vice Chairman [North American Clean Energy]. The company describes its founding group as U.S. veterans and engineers with backgrounds in military operations, disaster response, and energy systems [NovaSpark Energy], a profile that lines up with the customer it is chasing. The DIU contract is the most concrete piece of traction in the public record [Hydrogen Fuel News], and for a company at this stage, a paid government pilot is a more useful signal than a revenue figure would be.
The honest counterfactual
What bears will say is that atmospheric water harvesting plus electrolysis is energy-intensive, and that the laws of thermodynamics are unsentimental: pulling water from dry desert air takes meaningful power, and splitting it takes more. If the unit ends up needing a large solar array or a diesel generator to run, the value proposition collapses back into the supply chain it was meant to escape. The bull answer, supported by the DIU's willingness to fund the project [Yahoo Finance], is that the relevant comparison is not grid hydrogen at $2 per kilogram but burdened diesel at a forward base, and that even a thermodynamically modest system wins at that benchmark. The next 18 months of prototype data will settle which side is right.
What to watch
The milestones to track are concrete. First, deliverables under the DIU contract, which typically run on 12 to 24 month cycles and end with a go or no-go on a follow-on production order. Second, a Series A, which for a defense-hardware company with a live DoD program would plausibly land in the $5 to $15 million range if the prototype performs. Third, any second customer outside defense, a disaster-response agency or a remote-site operator, which would prove the platform travels beyond its anchor buyer.
The incumbent NovaSpark has to beat is not another hydrogen startup. It is Cummins, whose diesel gensets are the default power source at every expeditionary base on earth, and whose logistics tail is the entire problem NovaSpark is trying to make obsolete.