Ammobia
San Francisco, US · Founded 2022 · 25 employees on LinkedIn · 16 known investors
Ammobia develops a novel ammonia production process that operates at low pressure and low temperature, achieving record-setting conversion rates. The company serves industrial customers in the energy and chemical sectors looking to decarbonize ammonia production.
Also known as Ammobia
Founders & leadership
Ammobia was founded in 2022 by Karen Baert and Tristan Gilbert.
Investors · 16
Also in the syndicate · 5
Funding
SEC filings, press & company announcements- Undisclosed amountseed roundFeb 2026
AIR Capital, ALIAD (Air Liquide), Alumni Ventures, Arosa Capital, Chevron Technology Ventures, Collaborative Fund, Katapult Ocean, MOL Switch (Mitsui O.S.K. Lines), Motivate Fund, Shell Ventures, Starlight Ventures, Zero Infinity Partners
Source ↗ - Undisclosed amountSeed FundingJan 2026Source ↗
Source: company announcements and press reports — follow each round's link for the claim.
Company profile
researched Aug 2026Ammobia is a San Francisco-based company developing reactor technology for ammonia synthesis, which it positions as "Haber-Bosch 2.0." Its process is designed to run at 30-60 bar and 400°C, compared with roughly 200 bar and 500°C for conventional Haber-Bosch plants, and the company states it reaches approximately 80% conversion per pass versus 15-30% for conventional systems. Ammobia links these operating conditions to a stated 50% reduction in synloop capital expenditure and 10-40% lower overall production cost.
The company markets standardized, modular plants that can be deployed in increments of hundreds of tonnes per day, rather than single billion-dollar-scale facilities. It describes the units as feedstock- and energy-agnostic, optimized for low-carbon energy inputs, and intended for siting close to where ammonia demand exists. Ammobia's stated end markets span fertilizer production, power generation and ammonia export, chemicals manufacturing, and maritime shipping fuel.
Business model
Ammobia commercializes its reactor and modular plant technology for ammonia producers and industrial users, positioning standardized units deployable in increments of hundreds of tonnes per day as an alternative to large centralized plants.
Traction
In November 2025 Ammobia was named the start-up winner of Shell's New Energy Challenge 2025, and in January 2026 it announced the close of a $7.5M funding round with strategic backers from the energy and industrial gas sectors. Its co-founders were named to a Forbes 30 Under 30 list in 2023 in the Manufacturing & Industry category.
Latest developments
Ammobia announced a $7.5M round on January 14, 2026, with participation from Shell Ventures, Air Liquide, MOL Switch, Chevron Technology Ventures, and Katapult Ocean. CEO Karen Baert spoke at the Frontier Science House at the World Economic Forum in February 2026 on a science roadmap to 2035, and in May 2026 published commentary on low-carbon ammonia reaching cost parity with fossil-fuelled ammonia.
▸Full profile — market position, technology, go-to-market, geography
Market position
Ammobia positions itself against conventional Haber-Bosch ammonia plants, emphasizing lower capital cost and smaller modular scale relative to facilities it characterizes as costing $1B or more in total installed capital.
Operation at up to 10x lower pressure and 100°C lower temperature than conventional Haber-Bosch, with roughly 80% per-pass conversion, enabling modular plants that the company says halve synloop capital expenditure.
Technology
Ammobia's core technology is an advanced ammonia synthesis reactor operating at 30-60 bar and 400°C, versus roughly 200 bar and 500°C for conventional Haber-Bosch. The company reports about 80% conversion per pass compared with 15-30% conventionally, and attributes to this a 50% cut in synloop capital cost and 10-40% lower overall production cost. Plants are described as modular, standardized, feedstock-agnostic and compatible with multiple energy sources, with optimization for low-carbon inputs.
Go-to-market
Industrial ammonia users and producers, including fertilizer manufacturers, power generation and ammonia export businesses, chemicals producers, and maritime shipping companies facing emerging emissions regulation.
Geography
Headquartered in San Francisco; the company addresses global ammonia markets, including port-proximate deployment and ammonia export applications.
Compiled by commissioned research from 1 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Competitors · 1
by search overlapCompanies competing with Ammobia for the same Google search keywords, organic and paid, via search-intersection analysis.
Timeline · 4
launches, deals, and filingsKaren Baert presented a science roadmap to 2035 at the Frontier Science House at the World Economic Forum 2026 in Davos.
Ammobia announced the close of a $7.5M funding round backed by Shell Ventures, Air Liquide, MOL Switch, and Chevron Technology Ventures, positioned to deliver a 2x cost reduction for ammonia producers. TechCrunch reported the round exclusively on January 13, 2026, and Katapult Ocean published its investment rationale on January 21, 2026.
$7.5M source ↗
Karen Baert and Tristan Gilbert were named to the 2023 Forbes 30 Under 30 list in the Manufacturing & Industry category.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
In the news
▸Research sources · 1
primary sources listed
- Ammobiaammobia.co · web
1 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Ammobia do?
- Ammobia develops modular, low-pressure Haber-Bosch reactor technology for low-cost, low-carbon ammonia production.
- Who founded Ammobia?
- Ammobia was founded by Karen Baert, Tristan Gilbert in 2022.
- Who are Ammobia's investors?
- Ammobia's investors include Chevron Technology Ventures, Shell Ventures, AIR Capital, Castor Ventures (an Alumni Ventures Fund), Collaborative Fund, Creative Destruction Lab (CDL), MOL Switch, Zero Infinity Partners and 3 more.
- Where is Ammobia headquartered?
- Ammobia is headquartered in San Francisco, US.