SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
i-Space logo i-Space Develops solid and liquid-fueled launch vehicles including the Hyperbola series, with China's first privately-built orbital rocket and a reusable methane rocket in development vs Portal Space Systems Manufactures solar-thermal-propelled spacecraft buses for high-delta-v, multi-orbit maneuverability and tactically responsive space operations Portal Space Systems logo
HEAD-TO-HEAD1 shared sector
i-Space Portal Space Systems
Founded 2016 2021
Headquarters China Bothell, Washington
Type private private
Status operating operating
Employees 22
Total funding $473.7M $20M
Latest round Series D++ Seed
Sectors Launch Services, Space Propulsion Space Transportation & Logistics, Satellite Manufacturing, Space Propulsion
Products listed 3 3
Federal contracts
Launches 9 (44%)
Leaders listed Peng Xiaobo Jeff Thornburg, Ian Vorbach, Prashaanth Ravindran
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do i-Space and Portal Space Systems compare?

Both companies work in Space Propulsion. i-Space was founded in 2016 and Portal Space Systems in 2021.

Which has more launches, i-Space or Portal Space Systems?

i-Space leads with 9 tracked launches (44% success rate).

Numbers refresh on every render against the live Space Index database. Federal contract data from USAspending.gov; launches from LaunchLibrary2.