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A farm-scale electrochemical ammonia unit (air, water and electricity in; ammonia out) is designed at 2.0 kg N per day and priced honestly against Haber-Bosch fertiliser. The design fails its own arithmetic: 40.2 kWh per kg N against 11.15 kWh per kg N for Haber-Bosch, $45,865 capital, and a levelised cost of $16.30 per kg N even with free electricity - 8.8 times the delivered remote fertiliser price - with a negative break-even electricity price. All figures are simulated, not measured, and are reproduced by the deposited computation script.
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William Alexander Aldred (2026) studied this question.
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