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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
client focusb2btechnologyHardwaretechnologyDeep Techbusiness modelManufacturingsectorSpinoutsectorSpace TechsectorSpace Vehicles Components and PayloadssectorPropulsion SystemssectorSpace UpstreamsectorHard TechsectorNIF defense security and resiliencesectorNIF freedom of operations and mobilitysectorDT and LSsectorscience-based

Valuation & funding

Pale Blue funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
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
Showing 10 recorded eventsUnlock the complete deal history →

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.

Latest monthly visits9K 3-month web change-5.3% 1-year team growth-4%
Monthly website visits67 observations · Nov 2020–Jul 2026
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Comparisons

Pale Blue compared with similar companies

Dealroom’s weighted taxonomy model identifies the closest operating peers. Company identity and context stay open; selected comparison metrics preview what is available in the platform.

Showing 8 of the closest matchesCompare every metric →

Talent graph

Pale Blue's talent

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Team profiled 2 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 1 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.

Investors

16 investors on Pale Blue's cap table

Sourced from Dealroom's funding and investor records.

Seed 5 investors entered at this stage
UTokyo Innovation Platform
Incubate Fund
Japan Small and Medium Enterprise Agency
NEDO
Japan Ministry of Education
Series A 8 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+ 2 investors entered at this stage
Nissay Capital
Mitsubishi Electric Innovation Fund
Other known 1 additional known investor
The University of Tokyo

Global footprint

Where Pale Blue has talent and traffic

Workforce by country
2 countries with
team presence
🇯🇵 Japan94.7%
🇺🇸 United States5.3%
2 countries shown

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.

See all news

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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