Observed arrival · 2026-10-21
Power in Orbit counts the sunlight running satellites
An independent tracker estimates the solar-array power of satellite constellations in orbit, comparing operators, cell technologies, and array manufacturers.
- For
- Satellite-industry watchers and space-systems researchers
- Worth noticing
- Planned totals exclude orbital data-centre concepts and the unapproved Starlink Gen3 filing.
Field notes
The method starts with launched satellites and subtracts spacecraft listed as reentered, lost, or retired, then multiplies the remaining count by an assumed array rating. Where published ratings are missing, the author estimates them from satellite mass and class; the page identifies this as a limitation, not a measured total. Its planned-power comparison uses announced constellation sizes and excludes orbital data-centre concepts and the unapproved Starlink Gen3 filing.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
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