Pale Blue's funding has not been publicly disclosed.

Pale Blue

Water-fuelled satellite propulsion

Pale Blue operates in the propulsion sector of the space industry, is headquartered in Japan, was founded in 2020, is at Series C+ stage.

Pale Blue at a glance

Record last updated August 2026 · how we verify · spotted something outdated? Tell us.

August 2025Funding
Series C: about 1.5 billion yen (about $10M)↗Led by aSTART, with Nissay Capital, Mitsui Sumitomo Insurance Venture Capital, ITOCHU Technology Ventures and the Mitsubishi Electric ME Innovation Fund
2025Achievement
Water ion thruster achieves its first in-orbit operation↗
June 2024Funding
Series B (final close): about 2.5 billion yen (about $16M)↗aSTART, Global Brain, ITOCHU Technology Ventures, Gogin Capital, Sumisho Venture Partners and others
2024Funding
Series B: ¥2.5B (~$16M)↗
October 2023Funding
Series B (first close): 1 billion yen (about $7.5M)↗Mitsui Sumitomo Insurance Venture Capital and Incubate Fund among long-term backers
March 2023Achievement
First in-orbit firing of its water vapour thruster, aboard Sony’s STAR SPHERE satellite↗
March 2023Achievement
Water-based thruster fires in orbit for the first time, aboard Sony’s EYE satellite↗

Water-fuelled ion and Hall thrusters for small satellite propulsion.

Founder interviews and the most promising space startups, straight to your inbox. Free, no spam, unsubscribe anytime.