SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Eta Space logo Eta Space Develops cryogenic propellant management systems for in-space storage, transfer, and refueling, and liquid hydrogen infrastructure for terrestrial energy applications vs Volta Space Technologies Develops wireless optical power transmission systems for lunar surface operations, delivering energy from orbit via laser beaming satellites Volta Space Technologies logo
HEAD-TO-HEAD1 shared sector
Eta Space Volta Space Technologies
Founded 2019 2020
Headquarters Rockledge, Florida Montréal, Canada
Type private private
Status operating operating
Employees 10 15
Total funding $27.2M —
Latest round Grant Seed
Sectors Space Transportation & Logistics, Lunar Services, Space Propulsion Lunar Services, Satellite Components & Subsystems
Products listed 6 2
Federal contracts — —
Launches — —
Leaders listed Dr. William Notardonato Justin Zipkin, Paolo Pino, PhD, Paul Damphousse
News mentions 0 9
SHARED SECTORS
Lunar Services
FREQUENTLY ASKED

How do Eta Space and Volta Space Technologies compare?

Both companies work in Lunar Services. Eta Space was founded in 2019 and Volta Space Technologies in 2020.

Which is larger, Eta Space or Volta Space Technologies?

Volta Space Technologies reports the larger workforce, with 15 employees versus 10.

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