The Origins of the Haber-Bosch Process
In 1908, German chemist Fritz Haber discovered a method to synthesize ammonia from nitrogen and hydrogen, marking a major milestone for the chemical industry. By the summer of 1909, Haber had demonstrated his invention operating at 500 °C and over 100 bar of pressure, producing 125 milliliters of ammonia per hour. Shortly thereafter, the BASF corporation acquired the rights to the technology, and engineer Carl Bosch took on the challenge of scaling it up. In 1913, the first factory began operations in Oppau, producing 20 tons of ammonia per day. Both pioneers were later awarded Nobel Prizes for their contributions.
Today, nearly all of the world’s 180 million tons of ammonia are manufactured using the Haber-Bosch method. However, the process carries serious environmental consequences: it consumes 1–2% of global energy and accounts for 1.44% of worldwide CO₂ emissions. In 2019, global ammonia production reached 235 million tons, making it the second most produced chemical commodity after sulfuric acid.
Haber-Bosch 2.0
In response to environmental concerns, new decarbonization technologies are gaining traction. One notable innovator is the startup Ammobia, which has raised $7.5 million in investments from Shell and Chevron. Ammobia’s system operates at 30 bar and 400 °C—significantly reducing energy demands. By contrast, conventional plants require 200 bar and 500 °C. According to Ammobia’s calculations, lowering the pressure could cut production costs by 10–40%. The company’s baseline unit is designed for 250 tons of ammonia, and they plan to build a pilot plant with a daily capacity of 10 tons.
“Our technology is highly compatible with renewable energy sources, which leads to additional cost reductions because there is no need to store hydrogen or electricity.” — Karen Baert, CEO of Ammobia
She further stated: 'In such scenarios, we hold the strongest cost advantage.'
Another promising startup is Amogy, which has secured $80 million in funding and boasts a valuation of $700 million. Amogy aims to bring to market systems ranging from 500 kilowatts to 1 megawatt. As global competition in the ammonia market intensifies, these new technologies could be key to lowering emissions and improving resource efficiency.
Ammonia becomes liquid at -33 °C or under a pressure of 10 bar. In contrast, hydrogen must be compressed to 350–700 bar or cooled to -253 °C for transport. This means startups offering alternative approaches to ammonia production and use could significantly reshape the global energy and environmental landscape.
The rise of new ammonia production technologies—such as those from Ammobia and Amogy—reflects a growing focus on the environmental impact of the chemical industry. Amid global warming and stricter CO₂ reduction targets, innovations in this field could prove crucial for achieving sustainable development. These startups not only lower costs but also enable integration with renewable energy sources, making them increasingly attractive to investors and consumers alike.