Oh hey, someone else did the math and came to the same conclusion I did a few months ago.https://twitter.com/grist/status/1011747701384507392 …
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How much energy is consumed by a transaction in us dollar, yen or euro in comparison?
Many, many, *many* orders of magnitude less. Which is obvious, because if transactions required 300 kWh of power banks wouldn't be doing them for free in many cases. Something like 0.001 kWh per transaction would already be quite a high number. A Google search requires 0.0003 kWh