22 Best Propulsion Startups to Watch in 2025

The Definitive Seedtable Ranking of Propulsion Startups

We track 71,000+ companies and rank them dynamically using our Seedtable Score – a score that uses quantitative and qualitative data points to signal the momentum behind a company. We then monitor the list manually leveraging our expertise as founders and investors.

There are 22 start-ups with an aggregate funding of $589.9m. The average funding per company in this subset is $26.8m.

Last update to the database: Feb 18, 2025. See changelog.

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7

Funding Rounds

$72.5m

Money raised

Accion Systems is a company that provides in-space propulsion systems for satellites

3

Funding Rounds

$108.5m

Money raised

A manufacturing company that specializes in producing solutions for microsatellite operations. It was founded in 2015 and is located in Berthoud, Colorado.

1

Funding Rounds

$150.0k

Money raised

HelicitySpace is a fusion propulsion and power company, developing technology for spacecraft.

Key people:

2

Funding Rounds

$29.8m

Money raised

Orbion develops and manufactures plasma propulsion systems for small satellites.

1

Funding Rounds

$10.0m

Money raised

Apollo Fusion is a company that looks to provide satellite propulsion technologies

Key people:

12

Funding Rounds

$4.6m

Money raised

Parabilis Space Technologies, Inc. is a San Marcos, California-based space technologies company founded in 2014

3

Funding Rounds

$13.4m

Money raised

Company building 3d printed rocket engines for small spacecraft

4

Funding Rounds

$17.3m

Money raised

Benchmark Space Systems is a company founded in 2017 by Matthew Shea.

1

Funding Rounds

$30.0m

Money raised

Morpheus Space is a space technology company developing next-generation spacecraft propulsion founded in 2018.

3

Funding Rounds

$44.7m

Money raised

Phase Four is a company founded in 2015.

3

Funding Rounds

$939.8k

Money raised

Cannae Holdings is a company that is engaged in managing and operating a group of companies and investments and making majority and minority equity portfolio investments in businesses.

2

Funding Rounds

$124.0m

Money raised

Protean Electric is an automotive technology firm. We are over 150 talented people based across the US, UK and China.

2

Funding Rounds

$71.0m

Money raised

Exotrail develops a miniaturised propulsion solution for small satellites.

Location:

3

Funding Rounds

$14.3m

Money raised

Developer of advanced electric propulsion systems for satellites and spacecraft.

1

Funding Rounds

$651.0k

Money raised

Pale Blue Inc. provides water propulsion systems for sustainable space development.

Location:

Key people:

1

Funding Rounds

$1.2m

Money raised

Ienai SPACE is an electrospray-based propulsion system developer for small satellites founded in 2019.

2

Funding Rounds

$8.3m

Money raised

Adranos Inc is a propulsion company founded in 2017.

3

Funding Rounds

$14.8m

Money raised

Liquidpiston is a Bloomfield, Connecticut-based company founded in 2004.

3

Funding Rounds

$16.3m

Money raised

Jing-Jin Electric Technologies is a Beijing-based company founded in 2008.

1

Funding Rounds

Porkchop is an in-space logistics enabled by a reusable vehicle founded in 2019.

1

Funding Rounds

$2.0m

Money raised

Components for satellite attitude and orbit control, reliably mass-produced for manufacturers.

Location:

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