Assembly in Orbit: What Has Been Done So Far
What experience exists of assembling large structures in space, and how far is it from what a space solar plant needs?
Chapter summary
the experience is real but small.
Key takeaways
- 1
The International Space Station, the largest structure ever assembled in orbit, has a mass of about 420 tonnes and took more than a decade of crewed spacewalks, robotic arms and dozens of launches to build.
- 2
A 2 GW space solar plant at Setcoin's reference mass of 10 kg/kW would weigh about 20,000 tonnes, roughly fifty times the station, and would have to be assembled without crews, faster and at a fraction of the cost per tonne.
- 3
Robotic servicing missions have docked with satellites and extended their lives; experiments have shown robotic arms joining trusses and fitting components; and deployable structures of tens of metres unfold routinely.
Keep reading with Space access
This chapter (451 words) is part of Space & aerospace. Space access opens every chapter of all 11 Space reports, with the interactive models, Excel downloads, Ask and named Atlas records.
- Global Market Analysis: Deep Space Economy
- Space-Based Datacenters: Feasibility Study
- Commercial Space Stations: Feasibility Study
- Defence Space and Missile Defence: Golden Dome and the SDA Architecture
- Launch After Starship: Prices, Capacity and European Sovereign Launch, 2026–2035
- Satellites to Phones: Direct-to-Device Connectivity, Spectrum and Economics, 2026–2035
- Space Supply Chain Bottlenecks: Components, Minerals and Capacity, 2026–2030
- Lunar, Cislunar and Settlement Economics: What the Moon Costs and Who Pays, 2026–2060
- Earth Observation and AI Analytics: What a Square Kilometre Is Worth and Who Captures It, 2026–2035
- In-Space Manufacturing and Microgravity Biotech: Products, Platforms and Economics, 2026–2035
- Space-Based Solar Power: Physics, Costs and the Path to Firm Power from Orbit, 2026–2050
€199 a month or €1,490 a year per sector, after a 7-day free trial. Cancel any time. Need several sectors? All sectors: €999 a month.
Check the live record Space Contracts & Tender Radar · Space Claim Check (free)
Ask about this chapter
Answers drawn from every Setcoin report and the live Atlas. Each statement links to the passage behind it.
Ask is included with every subscription
Cited answers across every report and the Atlas, with follow-up questions and a hand-off to the opportunity finder.
Research for professional investors. Not investment advice, and not an offer of any security or fund interest.