> replace less than half of that since the electric process is more efficient.

This is right. This shows 63% wasted (as of 2024).

https://flowcharts.llnl.gov/sites/flowcharts/files/2026-08/2...

I remember this was 67% just a few years back. May have gone down because of increase in solar.

sustainabilitybynumbers (Hannah Ritchie) had an article talking about this, that we need only 25%-ish in renewables. I am unable to find that article.

(edit) found the article

https://hannahritchie.substack.com/p/electrification-energy-...: Global final energy demand today2 compared to a ‘post-transition’ energy system where suitable sectors are electrified, and the rest is fuelled by hydrogen. Electricity demand does increase – from 110 to 189 EJ, but total energy demand drops from 416 to 247 exajoules (EJ).