“with wind the single-biggest contributor… Power production costs have declined “by almost half” … And the clean energy sector has created 50,000 new jobs… Ask me what was the impact on the electricity sector in Uruguay after this tragic war in Europe — zero.”
You’re right; 2/3 of worldwide energy is actually waste heat.
https://www.businessinsider.com/most-energy-still-comes-from-oil-2015-10
Here’s the chart from 2007: Waste heat / losses are in the top right, although it doesn’t show the transport sector losses which are higher than for coal generation.
What this means is that when we fully electrify all sectors, by using renewable energy such as wind and solar, our total energy generation capacity will only need to be about 1/3 to 1/4 of what we currently produce today to fulfill our current energy needs. That’s huge.