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Stargate Hydrogen

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Stargate Hydrogen delivers turn-key solutions for hydrogen projects throughout the world

Tallinn, EstoniaFounded 2021Energy
Valuation $100–250M Last recorded · 2025
Revenue $1–10M Latest reported FY
Headcount <100 Current team size
Total funding $50–100M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Stargate Hydrogen and the history behind them.

About Stargate Hydrogen

Stargate Hydrogen is a forward-thinking company specializing in hydrogen technology solutions. Based in Tallinn, Estonia, the company operates primarily in the green energy sector, focusing on the development and deployment of electrolyzers and fuel cell locomotives. Their primary clients include industries such as refineries, green ammonia producers, green steel manufacturers, and synthetic fuel producers. Additionally, they serve the transportation sector by retrofitting freight locomotives with zero-emission hydrogen powertrains.

The company’s business model revolves around providing tailored, cost-effective, and scalable hydrogen solutions. Stargate Hydrogen generates revenue through the sale of their advanced electrolyzers and fuel cell systems, as well as through service and maintenance contracts. Their electrolyzers use cutting-edge alkaline technology, which is free of precious metals like iridium and ruthenium, making them both cost-effective and scalable. These electrolyzers are designed to produce hydrogen at high pressure, thereby saving energy and reducing costs for their clients.

Stargate Hydrogen is also a member of several key industry associations, including the European Clean Hydrogen Alliance, the Estonian Hydrogen Association, and the Latvian Hydrogen Association. This affiliation underscores their commitment to advancing hydrogen technology and contributing to a sustainable future.

Their innovative approach includes converting existing diesel-electric locomotives into zero-emission hybrid fuel cell battery-powered shunting locomotives. This solution is less capital-intensive and offers a lower total cost of ownership compared to traditional electric locomotives, making it an attractive option for the freight industry.

In summary, Stargate Hydrogen is a dynamic player in the green energy market, offering versatile and reliable hydrogen solutions that help industries and transportation sectors reduce their carbon footprint.

Source: Dealroom company data

At a glance

Status
Operational
Founded
2021
Headquarters
Tallinn, Estonia
Employees
65
Open positions
2
Dealroom signal
85.1/100
Sub-industry
Clean Energy
Sector
Energy, Hydrogen, Ceramic, Sustainable Development Goals, Climate Tech, Electrolysis, Green Hydrogen, Hydrogen Production, Startup Estonia, Startup Estonia: Deep Tech
Technology
Hardware, Deep Tech
Business model
Manufacturing
Client focus
b2b

Funding history

4 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
EARLY VCOther financing Jul 2025 $0 — Repsol Energy Ventures ↗
SERIES AOther financing Mar 2025 $12M $231M SmartCap · UG Investments · GIGA Venture ↗
Showing the latest 2 of 4 recorded eventsBook a demo for the full funding history →

Financials

Revenue over time

Revenue, earnings and other financial measures where available. Years marked “E” are estimates.

YearRevenueGrowth
2026
2025
2024
2023
2022 —
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Growth signals

Stargate Hydrogen website traffic

Latest recorded traffic for Stargate Hydrogen is 26K monthly website visits, up 36.8% over the last three months. Stargate Hydrogen's team grew 1.6% over the past year.

Latest monthly visits26K 3-month web change+36.8% 1-year team growth+1.6%
Summary metrics are public; monthly history is available with a demoCompare with peers →

Open positions

Openings linked to this company in Dealroom
1 distinct opening shownExplore hiring signals →

Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

6 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed3 investors entered at this stage

  • European Commission
  • UG Investments
  • Important Projects of Common European Interest

Series A3 investors entered at this stage

  • SmartCap
  • GIGA Venture
  • Repsol Energy Ventures
Team profiled 6 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 2 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
5 countries with
team presence
🇪🇪 Estonia92.7%
🇸🇪 Sweden1.8%
🇩🇪 Germany1.8%
🇳🇱 Netherlands1.8%
🇵🇱 Poland1.8%
5 countries shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Stargate Hydrogen on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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