upvote
Comparing primary energy is VERY misleading. From Marc Jacobson:

The use of primary energy on the vertical axis is an old trick by the fossil fuel industry to mislead people into thinking that one unit of fossils = one unit of renewables. In fact, one unit of primary energy for wind or solar electricity is the equivalent of three units of fossil fuel electricity.

Another trick is to pretend we need all those fossils if we switched to renewables. In fact, if we switch to renewables, 12% of the fossil fuel energy disappears because that is how much energy is used to mine-transport-refine fossil fuels+uranium for energy, and we wouldn't need to do that anymore

A third trick is to pretend we need so much energy if we go to all electricity powered by renewables. In that case, because EVs use 75% less energy than gasoline/diesel vehicles, heat pumps use 75% less energy than combustion heating, etc., energy demand goes down another 42%.

In sum, this plot illustrates the real story of where we are and where we need to go. The proper metric is end-use energy, not primary energy.

https://lnkd.in/gYw9mB3x

and here's the paper

https://lnkd.in/gTcqkyG5

reply
Yea, the article struck me immediately as a lot of spin in that it’s hyping the growth rate of solar versus the growth rate of other tech. Solar is newer and is still a relatively small slice of the overall pie compared to oil and gas. It’s relatively easy to rapidly grow a small pie wedge than a large one given the overall growth rate of the pie. And growth rates inevitably slow down as pie wedges get larger, because they have to. So, as you say, good news, but still over-hyped, IMO.
reply
While your statement is true your graph is misleading for two reasons.

1) comparison of spent energy for fossil fuels vs electricity is not a good way to do it because electric motors use less for the same output. Compare kWh per 100km for an ICE car and EV. Electrification will lead to a drop simply because of this

2) the graph is global, we have seen energy consumption go down in the developed world. E.g. the EU now uses less electricity than 20 years ago.

reply
> comparison of spent energy for fossil fuels vs electricity is not a good way to do it because electric motors use less for the same output. Compare kWh per 100km for an ICE car and EV. Electrification will lead to a drop simply because of this

Yes but there are losses in generating electricity, and in transmitting it as well. If you only measure from energy in your car's battery to motion you're right, but I don't think that's a useful measure.

reply
Then you also have to account for losses in drilling oil, shipping it to a refinery, refining it into gasoline or diesel, shipping it to a distribution hub, then to a gas station. And all the electricity consumed in doing that. And the navy and coast guard ships that need to patrol all the oceans to keep the oil tankers safe. And...
reply
Yes, and the same for building and fuelling the power station I suppose. That's why I'm saying you need to pick a sensible point to compare efficiency at.
reply
Building power stations is a one-time cost. If the power station is solar or wind, same thing, only no fuel. Not the case for fossil fuels.

Solar panels or windmills are like oil drills. They aren't oil.

reply
I think 2) is a lot more complicated to the point statements like that are misleading.

Take a look Graph of energy consumption of China which is about double the US: https://ourworldindata.org/profile/energy/china

The energy consumption of the United States has flat lined: https://ourworldindata.org/profile/energy/united-states

One can argue that the US and Europe have maintained a low energy consumption by de-indusrializing and having China produce all the energy (largely with coal!) to manufacture their goods instead of manufacturing it themselves.

1) Is a lot more complicated as well. A simple ICE vs EV comparison ignores electric grid generation efficiency and transmission losses as well as the massive energy cost of manufacturing the battery.

reply
> One can argue that the US and Europe have maintained a low energy consumption

The US has not "maintained a low energy consumption". US total energy consumption is the second highest in the world, at 2x third (India), 3x fourth (Russia), 5x fifth (Japan), and 6x sixth (India). It was first until China overtook it in 2008. Here's a line graph from 1965-2024 of those 6 countries [1].

[1] https://ourworldindata.org/grapher/primary-energy-cons?tab=l...

reply
> A simple ICE vs EV comparison ignores electric grid generation efficiency and transmission losses as well as the massive energy cost of manufacturing the battery

Does it take into account the "massive energy cost" of manufacturing the ICE vehicle then?

reply
Or the gasoline generation efficiency and transmission losses? Or the economic impacts of oil pollution? Getting oil from the ground to the pump isn't free either.
reply
100 percent
reply