P
Pale Blue
Offering next-generation spacecraft propulsion systems that use water as a safe green propellant
About Pale Blue
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.
Source: Dealroom company dataAt a glance
- Status
- Operational
- Founded
- 2020
- Headquarters
- Kashiwa, Japan
- Employees
- 24
- Open positions
- None listed
- Dealroom signal
- 76.6/100
- Sector
- Space, Spinout, Space Tech, Space Vehicles Components and Payloads, Propulsion Systems, Space Upstream, Hard Tech, NIF defense security and resilience, NIF freedom of operations and mobility, DT and LS, science-based
- Technology
- Hardware, Deep Tech
- Business model
- Manufacturing
- Client focus
- b2b
Knowledge graph
More headlines
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 | ↗ |
Growth signals
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.
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Investments and acquisitions
Recent portfolio relationships for companies that also act as investors or acquirers.
Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Seed5 investors entered at this stage
UTokyo Innovation Platform
Incubate Fund- JAJapan Small and Medium Enterprise Agency
NEDO
Japan Ministry of Education
Series A8 investors entered at this stage
Mitsui Sumitomo Insurance Venture Capital
Sparx
Kuroneko Innovation Fund
Itochu Technology Ventures
Gogin Capital
Chibagin Capital
Global Brain Corporation
AStart
Series B and later2 investors entered at this stage
Nissay Capital
Mitsubishi Electric Innovation Fund
Other known investors1 additional known investor
The University of Tokyo
Source: Dealroom Talent Intelligence.
Global footprint
team presence
Market sentiment
An AI-synthesised read of the highest-engagement posts about Pale Blue 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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