Hystar vs Travertine
Hystar
We make the world's most efficient PEM electrolysers for large-scale green hydrogen production
78 employees · est. 2021 · Oslo, Norway
Hystar is the older company (2021 vs 2022); Hystar is the larger of the two.
1 signal in the last 90 days
Side-by-Side Comparison
| Metric | Hystar | Travertine |
|---|---|---|
| Founded | ||
| Founded | 2021 older | 2022 |
| Headquarters | ||
| Headquarters | Oslo, Norway | Boulder, United States |
| Employees | ||
| Employees | 78 larger | 26 |
| Funding Stage | ||
| Funding Stage | Grant | Venture round |
| Total Funding | ||
| Total Funding | $50.00M | $11.50M |
| Funding Rounds | ||
| Funding Rounds | 3 | 3 |
| Services | ||
| Services | Supply of PEM Electrolyser Stacks, Modular Hydrogen Solutions, Automated Electrolyser Production | Not tracked yet |
| Target Customers | ||
| Target Customers | Energy Companies, Technology Integrators, Sustainability-focused Enterprises | Not tracked yet |
| Taxonomy | ||
| Taxonomy | PEM ElectrolyzersGreen Hydrogen ProductionAdvanced Cell DesignCarbon Emission ReductionEnergy TechnologyHigh Efficiency Energy Systems +7 | Carbon Dioxide RemovalCritical Element ProductionGigaton-Scale SolutionSulfuric Acid ProductionGreen Hydrogen ProductionSustainable Industry +7 |
| Website | ||
| Website | hystar.com | travertinetech.com |
About Hystar
Hystar is a high-tech Norwegian company founded in 2021, specializing in the development of the world's most efficient PEM electrolysers for large-scale green hydrogen production. Aiming to transform energy sectors, they offer a sustainable solution to the prevalent issue of carbon emissions associa...
About Travertine
Travertine, based in Boulder, CO, is a carbon dioxide removal and critical element production company founded in 2022. The company's slogan, "Critical Element Production Recharged," emphasizes its focus on sustainability and innovation. Travertine aims to build a cost-effective gigaton-scale CDR sol...
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Compiled from the BounceWatch company index. We last looked at Hystar on 11 Aug 2025, and Travertine on 11 Sep 2024. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.
