Portal Space Systems
Agent36Agent Readiness: 36/100. Below median. Measured by StartupHub.ai. Median 41.Trust66Data Trust: 66/100. Above median. Measured by StartupHub.ai. Median 61.Developing high-powered solar thermal propulsion for spacecraft.
About
Portal Space Systems is a startup founded in 2021 by former SpaceX engineer Jeff Thornburg, along with co-founders Ian Vorbach and Prashaanth Ravindran. The company is focused on developing and commercializing solar thermal propulsion technology for spacecraft. This technology aims to provide more efficient and powerful in-space propulsion compared to current chemical or electric propulsion systems by concentrating solar heat to heat propellant and achieve high speeds.
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Key facts
- Website
- portalsystems.space
- Headquarters
- Bothell, United States
- Founded
- 2021
- Employees
- 50
- Total funding
- $50M (Series A)
- Business model
- B2B
Funding rounds
| Date | Round | Amount | Post-money | Lead investors |
|---|---|---|---|---|
| 9 Apr 2026 | Series A | $50M | $250M | Geodesic Capital, Mach33 |
Tech stack
Detected on portalsystems.space, last scanned 20 Oct 2026. Run your own scan
- CMS / Builders
- Webflow
- CDN
- Cloudflare
- Video / media
- Vimeo
Portal Space Systems scores 42. Does yours?
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Frequently asked
What does Portal Space Systems do?
Portal's technology has potential applications for both commercial satellite operators and the U.S. military for enhanced orbital maneuverability.
Is Portal Space Systems trustworthy and reputable?
StartupHub's Data Trust & Reputation score for Portal Space Systems is 66 out of 100, a generally safe rating, based on site security posture, privacy practices, malware and phishing checks, and public reputation signals.
How much funding has Portal Space Systems raised?
Portal Space Systems has raised a total of $50M in funding. The most recent round on record is Series A.
How many employees does Portal Space Systems have?
Portal Space Systems has approximately 50 people on record.
Public record
SEC filings, insider activity, nonprofit links and pay benchmarks for Portal Space Systems
