PlasmaLeap raises $20M to make ammonia from air at low cost

The energy figures show where the difficulty lies. A 2026 study using Ni(OH)₂@Cu nanowires, which integrates air oxidation and nitrate reduction, reported an overall specific energy of 2.89 kWh per mole of NH₃. Unlike studies that report nitrate reduction alone, it counts the upstream step of activating nitrogen.

Another 2026 study, using a plasma-coupled solid acid cell with a molybdenum cathode, ran at 140°C rather than room temperature. It reached a Faradaic efficiency of 1.9 ± 0.7%, and plasma accounted for 99.85% of the reported energy consumption. Its authors present the work as a fundamental proof of concept, not near-commercial performance.

The October 2026 assessment names plasma electricity consumption as the dominant constraint. It also found that better selectivity alone does not close the gap at the level of the full system.

Headline metrics deserve some suspicion. UNSW and peer-reviewed literature indexed in PubMed Central both separate Faradaic efficiency, the share of electrical charge that ends up making the desired product, from energy efficiency, so near-100% Faradaic efficiency does not mean near-100% conversion of electricity into ammonia. "Ambient" is a similarly slippery word, since it describes the reaction only. One Wiley-published catalyst study relied on alloying at 1500°C for three hours.

A Crowded Field of Catalysts and Rivals

Catalyst claims vary widely by study. Published systems use iron oxide/copper, gallium-based alloys, copper-manganese-antimony, copper-palladium, silver or platinum. A 2026 plasma-liquid microdischarge study reported Faradaic efficiency above 70% without any catalyst, though the accessible record did not establish commercial scale or full plant cost. An in-liquid plasma catalysis paper found platinum the most active and stable material it tested.

Competitors are taking different routes:

• OzAmmonia signed a memorandum of understanding with Jakson Green on March 18, 2026, to pilot its electrolyser technology in India. CEO Rahman Daiyan called it "a significant milestone in the commercialisation of our electrolyser technology." Verified pilot commissioning and output were not located.
• Jupiter Ionics and Monash work on lithium-mediated and alloying electrochemistry. An interim report hosted by ARENA, covering March 2024 to November 2025, targets a 20-40% capital-cost reduction and describes ongoing work on separator membranes, along with a pivot away from membrane pervaporation. Monash professor Alexandr Simonov said Oct. 8, 2026: "We are also working to scale up the cathodes and demonstrate long-term ammonia production at competitive energy efficiency."
• Atmonia describes patented-catalyst systems built around 150 tonne-per-year modules. That is a design claim, not verified installed output.

The incumbents, meanwhile, are moving faster. Woodside's Beaumont New Ammonia project recorded first ammonia in December 2025, reached operational handover in March 2026 and has 1.1 Mtpa of capacity, with lower-carbon production targeted for 2027. In May 2026, the Ammonia Energy Association reported that LOTTE Fine Chemical bunkered 600 tonnes of ammonia from Envision's Chifeng facility into EXMAR's Antwerpen for sea trials. That ammonia was not plasma-made.

Demand and Rules Complicate the Pitch

Demand is uncertain. The IEA's June 2026 review said deployment of low-emissions hydrogen is growing but project pipelines have contracted, with weak demand and regulatory barriers outside leading markets. On June 30, 2026, Yara said it would not acquire Air Products' Louisiana Clean Energy Complex ammonia assets because expected returns did not meet its investment criteria. The company said it was finalizing a separate NEOM renewable-ammonia marketing and distribution agreement.

Regulation will shape any advantage as well. Under the EU's carbon border mechanism, verified product carbon intensity and documentation matter, and a mild-process label does not establish compliance. The IMO counts full well-to-wake greenhouse-gas intensity, including N₂O.

Any claim of being "cheaper than Haber-Bosch" needs matched product purity, geography, electricity price, utilization, capital recovery and plant boundary, according to the Wiley-published analysis. The research record suggests the question of whether ammonia can be made under mild conditions is largely settled. Whether it can be done economically across a whole plant, at verified scale and over sustained operation, remains unproven.

Simonov's group faces the same test as PlasmaLeap: electrodes that scale, long-duration runs and efficiency that holds up against the competition.

Editor's note: the supplied headline cited $20 million, but the research supports A$30 million per PlasmaLeap's March 3, 2026 release. This draft uses the sourced figure.