SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Sierra Space logo Sierra Space Designs and manufactures satellite platforms, reusable spaceplanes, expandable habitats, and propulsion systems for national security and civil space vs Space Solar Develops space-based solar power technology to beam continuous clean energy from geostationary orbit to Earth via wireless power transmission Space Solar logo
HEAD-TO-HEAD1 shared sector
Sierra Space Space Solar
Founded 2021 2022
Headquarters Louisville, Colorado Didcot, United Kingdom
Type private private
Status operating operating
Employees 1,072 10
Total funding $2.2B $508K
Latest round Series C Seed
Sectors Satellite Manufacturing, Space Propulsion, Space Stations & Habitats Satellite Manufacturing, Satellite Components & Subsystems
Products listed 7 2
Federal contracts 1 ($6.5M)
Launches
Leaders listed Dan Jablonsky, Janet Kavandi, Troy Lahr Martin Soltau, Sam Adlen, David Homfray
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Sierra Space and Space Solar compare?

Both companies work in Satellite Manufacturing. Sierra Space was founded in 2021 and Space Solar in 2022.

Which is larger, Sierra Space or Space Solar?

Sierra Space reports the larger workforce, with 1,072 employees versus 10.

Which has more US federal contracts, Sierra Space or Space Solar?

Sierra Space has been awarded more, with $6.5M across 1 awards.

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