I've never seen it drop. Better, better, better, spoiled.
Thedogdrinkscoffee
joined 6 months ago
Excess available energy. We've never had that before. Despite all our renewables development is has only supplemented our energy, never displacing fossil fuels.
Ahem. Pangea Proxima.
Don't worry about it. You'll be dead from a multiple simultaneous crises. Your car won't save you.
We in the "rich" world already have a housing crisis where masses would love a cave over their current sleeping rough. Berries would be nice too and hunger is all too well known in the developed world.
You are way out of touch. Congratulations to be so fortunate.
"The EROI for discovering oil and gas in the US has decreased from more than 1000:1 in 1919 to 5:1 in the 2010s, and for production from about 25:1 in the 1970s to approximately 10:1 in 2007 (Guilford et al., 2011)."
https://www.sciencedirect.com/science/article/pii/S0301421513003856
Edit: from the same source.
An examination of the EROI literature on solar photovoltaic or PV energy generation shows differences in the assumptions and methodologies employed and the EROI values calculated. The values, assumptions, and parameters included are often ambiguous and differ from study to study, making comparisons between PV and other energy EROI values difficult and fraught with potential pitfalls. Nevertheless, we calculated the mean EROI value using data from 45 separate publications spanning several decades. These values resulted in a mean EROI value of roughly 10:1 (n of 79 from 45 publications) (see Lambert et al., 2012 for references) (Fig. 3). It should be noted that several recent studies that have broader boundaries give EROI values of 2 to 3:1 (Prieto and Hall, 2012, Palmer, 2013, Weissbach et al., 2013)
I don't think you've fully understood my admittedly terse post. " Excess solar" is a very loaded term. The long term eroei of solar and wind, accounting for best in class recycling of the materials for turbines and panels gives an eroei just over 3-1. This is the surplus energy that your entire civilization has to do its stuff. All resource extraction. All agriculture, all industrial and technological production. The last 250 years have seen us go from 1000-1 to below 18-1. An explosion of metabolic activity followed by contraction, atrophy and collapse as we shift to 3-1.
At 3-1 eroei, are we driving cars? Are we heating homes? Are we mining crypto? Are we feeding 8-11 billion humans? We will have to make some wildly radical decisions on where to apply limited resources. Everything is too precious to waste.
Under every conceivable option yet discovered, carbon capture makes no sense, and is dwarfed by the obvious and much easier benefits of stopping the use of fossil fuels.
So far DACC is a scam. The energy costs to capture carbon have always proven near as high or higher than the energy gained from burning fossil fuels. It's always been unviable and treating any of it as anything but research projects is 100% bs.
Fossil fuel companies have vested interests in perpetuating the myth that we can clean up our mess after the fact. Think about how insane this proposition is! How can a world that has to drastically reconfigure itself to run on a renewables eroei of roughly 3 to 1, find the surplus energy to recapture capture carbon when the 100:1 eroei of fossil fuels are no longer available? The superorganism known as human civilization won't have the surplus energy to handle its own metabolic needs and recapture carbon.
A surface gusher of light sweet crude used to give 100:1. The last 30 years have seen eroei decline from 30-1 to 18-1 today as an average with tight oil going as low as 5-1.
This article is false hope. Sickly sweet paliative medicine given to terminal patients. There there dear. Your suffering will soon be over and everything will be beautiful again in the afterlife.
Compared to what? Horses are 100% recyclable and biodegradeable.
Cars, even ev's. Not so much.
Pouty China: "We don't need your corrupt institutions! We'll make our own corrupt institutions."
The most environmentally friendly thing you can do as a car owner is stop being one. Ride a bike. Take Mass Transit. Walk.
I need a link to this dish.