The Human-Powered Light Bound: How Much Light Ten Minutes of Effort Buys, and Where Muscle Beats the Sun

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?

Authors

Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2026-11-10
DOI
https://doi.org/10.5281/zenodo.24113165
Primary Topic
Power Systems and Renewable Energy
Type
article
Field-Weighted Citation Impact
0.00
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article

The Human-Powered Light Bound: How Much Light Ten Minutes of Effort Buys, and Where Muscle Beats the Sun

William Alexander Aldred
Zenodo (CERN European Organization for Nuclear Research)
Power Systems and Renewable Energy
article

The Human-Powered Light Bound: How Much Light Ten Minutes of Effort Buys, and Where Muscle Beats the Sun

William Alexander Aldred
article en

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?

Zenodo (CERN European Organization for Nuclear Research)
Power Systems and Renewable Energy
DOIOpen Access PDFOpenAlex
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The Human-Powered Light Bound: How Much Light Ten Minutes of Effort Buys, and Where Muscle Beats the Sun — William Alexander Aldred · Zenodo (CERN European Organization for Nuclear Research) (2026) | TGRS Research Map | TGRS