P
Pale Blue
Space · Kashiwa, Japan · Founded 2020
Offering next-generation spacecraft propulsion systems that use water as a safe green propellant MoreLess
Pale Blue Inc., a Japanese startup founded in 2020, is revolutionizing the space propulsion industry with its innovative use of water as a green propellant. The company, established by propulsion specialists from the University of Tokyo, has developed a unique, high-performance spacecraft thruster that leverages the environmental benefits of water.
Pale Blue's business model is centered around its patented miniaturized Electron Cyclotron Resonance (ECR) technology. This technology allows the company to fully utilize water as a propellant, resulting in a safer, more sustainable solution for space propulsion.
The company primarily serves clients in the space industry, specifically those requiring propulsion solutions for small satellites. Their product is an ultra-compact, high specific impulse, clusterable system that is currently available for small satellites.
Pale Blue's revenue model is likely based on the sale of these water-based thrusters to satellite manufacturers and space agencies. As the demand for more sustainable and safer propulsion methods increases, Pale Blue is well-positioned to capitalize on this market trend.
The company's team, with over seven years of experience in propulsion machine research and satellite operation, is committed to realizing sustainable space development and utilization.
Keywords: Spacecraft Propulsion, Green Propellant, Water Propellant, High Performance Thruster, Sustainable Space Development, Small Satellites, ECR Technology, University of Tokyo, Propulsion Specialists, Satellite Propulsion.
Company overview
Pale Blue company information
The essential company record, classifications and operating signals in one place.
- Status
- Operational
- Founded
- 2020
- Headquarters
- Kashiwa, Japan
- Employees
- 24
- Open positions
- None listed
- Dealroom signal
- 76.6
Valuation & funding
Pale Blue funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| SERIES COther financing | Aug 2025 | $12M | $46M | Nissay Capital · Mitsubishi Electric Innovation Fund | ↗ |
| SERIES BOther financing | Jun 2024 | $19M | $77M | Itochu Technology Ventures · Gogin Capital · Mitsui Sumitomo Insurance Venture Capital · Chibagin Capital | ↗ |
| GRANTOther financing | Feb 2024 | $31M | — | Japan Ministry of Education | ↗ |
| SERIES BOther financing | Oct 2023 | $6.2M | $25M | Incubate Fund · Mitsui Sumitomo Insurance Venture Capital | ↗ |
| DEBTDebt | Oct 2023 | $1.5M | — | Undisclosed | ↗ |
| GRANTOther financing | Jun 2023 | NEDO | — | ||
| GRANTOther financing | Jul 2022 | Japan Small and Medium Enterprise Agency | ↗ | ||
| SERIES AOther financing | Oct 2021 | Incubate Fund · Mitsui Sumitomo Insurance Venture Capital · Sparx · Kuroneko Innovation Fund | — | ||
| SEEDOther financing | Oct 2020 | Incubate Fund | — | ||
| GRANTOther financing | Feb 2020 | UTokyo Innovation Platform | — |
Growth signals
Pale Blue website traffic
Latest recorded traffic for Pale Blue is 9K monthly website visits, down 5.3% over the last three months. Pale Blue's team declined 4% over the past year.
Comparisons
Pale Blue compared with similar companies
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Talent graph
Pale Blue's talent
Source: Dealroom Talent Intelligence.
Investors
16 investors on Pale Blue's cap table
Sourced from Dealroom's funding and investor records.















Global footprint
Where Pale Blue has talent and traffic
team presence
In the news
Latest news about Pale Blue
Recent press, funding announcements, and product moves mentioning Pale Blue — open to read from the original sources.
Market sentiment
What the market is saying about Pale Blue
An AI-synthesized read of the highest-engagement posts about Pale Blue on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.
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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