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Why use a bad metric when one can use the actually relevant metrics?

I see this from nuclear advocates when they talk about "energy density". Energy density (or EROI) are only relevant insofar as they affect cost. Why not just use cost? (The answer is that cost isn't giving the nuclear advocates the answer they want, so they have to lie and use some substitute metric.)



Huh? Cost vs EROI differences show potential for improvements. You can never cheat bad eroi of RE grid.


RE grid doesn't have a "bad EROI". The EROI of renewables is quite acceptable.


Not if you factor in all the residual. Adding to fossil or water based grid is okay, running on its own with all the necessary residual it gets way worse.


Yes, even if you factor in "all the residual".

EROI cannot be bad, since energy is only a small part of the cost of manufacturing. If EROI was unacceptable, then overall cost would be too.


EROI of 5 means 20% all energy goes just to preserving current status. As wind is limited this gives hard limits to what is sustainable in northern countries. These problems completely disappear with nuclear.


EROI is a lot higher than 5.


No




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