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Power is not energy: why the difference matters

Technology Connections · 2.3M views · 2025-03-29 · 52:22

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Overview

Technology Connections explains the difference between power (watts) and energy (watt-hours) and why confusing them leads to errors. It runs about 52 minutes and uses everyday examples.

On Hacker News

HN points to it whenever a thread mixes up power and energy, such as battery specs and solar generation.

Recommended by 2 HN people across 2 months · HN mentions 2025–2026

Topics

Power grid, heating & buildingsFundamental physics
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wattsenergyelectricityunitsphysics

What people said

DavidVoid · 2025-06 · Recommendation

There is indeed; Watts aren't energy, and it's a common enough mistake that Technology Connections made a pretty good 52 minute video about it the other month [1]. [1]: [VIDEO]

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VogonPoetry · 2025-04 · Recommendation

Yes, totally agree. Also a paragraph on the relationship between energy, heat, cooling and that computers effectively turn all energy into heat might have been useful. The April 1st date on the article is telling. Shout out to "Technology Connections" YouTube channel for recently publishing "Power is not energy" - < [VIDEO] >.

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Kye · 2026-02 · Reference

He has a whole video[0] on the difference between energy and electricity, so he understands it. Maybe there's some disconnect between the video and your interpretation. [0] [VIDEO]

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Sources

Video by Technology Connections, played through YouTube.

Data and selection notes

HN summaries and labels may contain AI errors. HN dates refer to discussions, not video publication.

HN Library: HackerTube export (2026-10-31) and open-index/hacker-news. Upstream summaries and classifications may contain AI errors.

Views, duration and playback status refresh separately from the published catalog. When an update fails, existing data remains visible.

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Rule matches identify candidates. They do not guarantee video quality or financial results.

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