# 45-8 Energy

**Source:** https://www.startuphub.ai/startups/45-8-energy
**Profile type:** Startup

> First European company dedicated to exploration and production of natural hydrogen and helium from subsurface reservoirs.

## About

45-8 Energy is a French deep-tech company pioneering the eco-friendly exploration and production of natural hydrogen and helium in Europe and the United States. Founded in 2017 in Metz, France, the company is the leading producer of helium in France and is advancing natural hydrogen as a low-carbon, locally sourced energy resource. Their projects span France, the Balkans, and the US (Kansas, Iowa), with investors including Bpifrance and TotalEnergies. In 2026, Ad Terra acquired a majority stake to expand their subsurface sovereignty mission.

## Key facts

- **Slug:** 45-8-energy
- **Website:** https://458energy.com
- **Location:** Metz, France
- **Founded:** 2017
- **Employees:** 31
- **Operating status:** Active
- **Total funding:** $7M
- **Sectors / tags:** Energy, Natural Hydrogen, Helium Production, Deep Tech, Renewable Energy, Subsurface Resources, Energy & Climate Tech, Critical Raw Materials, Energy Exploration
- **Social:**
  - LinkedIn: https://www.linkedin.com/company/45-8-energy
  - Twitter: https://twitter.com/458energy

## Frequently asked

### What does 45-8 Energy do?

45-8 Energy is a French deep-tech company pioneering the eco-friendly exploration and production of natural hydrogen and helium in Europe and the United States. Founded in 2017 in Metz, France, the company is the leading producer of helium in France and is advancing natural hydrogen as a low-carbon, locally sourced energy resource. Their projects span France, the Balkans, and the US (Kansas, Iowa), with investors including Bpifrance and TotalEnergies. In 2026, Ad Terra acquired a majority stake…

### What is 45-8 Energy's revenue?

StartupHub estimates 45-8 Energy's annual revenue at $19.1M (range $10.5M to $54.4M, 71% confidence), based on comparable companies in the sector.

### What is 45-8 Energy's valuation?

StartupHub estimates 45-8 Energy's effective valuation at $810.8M (range $567.6M to $1.1B, 34% confidence), based on comparable companies in the sector.

### How much funding has 45-8 Energy raised?

45-8 Energy has raised a total of $7M in funding. The most recent round on record is Series A.

### Where is 45-8 Energy headquartered?

45-8 Energy is headquartered in Metz, France.

### When was 45-8 Energy founded?

45-8 Energy was founded in 2017.

### What industry does 45-8 Energy operate in?

45-8 Energy operates in Energy, Natural Hydrogen, Helium Production, Deep Tech, Renewable Energy, Subsurface Resources.

### How many employees does 45-8 Energy have?

45-8 Energy has approximately 31 people on record.

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