# From Backpack Panels to Orbital Power

> 100 W at Sunset vs. the ISS Solar Farm

**Published by:** [David T Phung](https://paragraph.com/@davidtphung/)
**Published on:** 2025-06-30
**URL:** https://paragraph.com/@davidtphung/from-backpack-panels-to-orbital-power

## Content

In 2025, a foldable solar-panel kit, the 220W EcoFlow blanket, can still pull about 100 watts of input at sunset. That’s plenty for a laptop, satellite hotspot, or a string of LEDs while you watch the sky fade. It’s a neat reminder of how personal, portable, and democratized solar power has become. Now place that humble rig beside the International Space Station, whose 1998-era solar array is still humming overhead: System: ISS array Collective Area: 2,500 m²/ 26,910 ft Span: Wings stretch 73 m/ 240 ft, wider than an entire football field Power Output: ~0.22 kW peak; ~0.10 kW at sunset, 60–120 kW of usable power In comparison:American football field (including end zones)~5,350 m² / 57,600 ft²109 m / 360 ft longEcoFlow 220 W panel1.5 m² / 16.2 ft²Folds into a backpack This Substack is reader-supported. To receive new posts and support my work, consider becoming a free or paid subscriber. Subscribe Clarification: The ISS truss structure is roughly half the square area of a football field, but its 240-foot wingspan is wider than the field itself. Not sponsored by EcoFlow. Just powered by curiosity.Presented by David T PhungPowered by: NLT143 | ⚛️⚡️ | Farcaster | X |YouTube Podcast

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