The Human-Powered Light Bound: How Much Light Ten Minutes of Effort Buys, and Where Muscle Beats the Sun
Year: 2026
Type: article
Abstract: Ten minutes of untrained pedalling (50 W) produces 658.1 lumen-hours — a full 1,000 lumen-hour night in 15.2 minutes — but solar beats muscle on cost wherever the sun shines; human power wins in emergencies and as a reserve. When the sun, the panel, or the battery fails, human effort is the fallback for light: how much light does it actually buy, and what is it worth against solar?
Author: Aldred, William Alexander
Language: English
Subfield: Energy Engineering and Power Technology
Field: Energy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7225732857
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