NEG
Chapter 2 - Society
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Welcome to the NEG page
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NEG is a more specific term than EROI and refers only to the pure energy part. In energy economics, the concept relates to the difference between the energy expended to harvest an energy source and the amount of energy gained from that harvest.
NEG = Energie consumable minus Energy expended.
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Core idea
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Net Energy Gain (NEG) is a subcomponent of energy analysis used in energy economies. It refers to the difference between the energy expended in producing a product and the sum of energy gained from the product.
The extraction energy can be profitable extractable (NEG>0) or nonprofitable extractable (NEG<0).
In all energy extraction cases, the life cycle of the energy-extraction device is crucial for the NEG ratio. If an extraction device is defunct after 10 years, its NEG will be significantly lower than if it operates for 30 years. Therefore, the 'energy payback time' is sometimes used, and it is called energy amortization. Usually given in years, this period is when a plant must operate until the running NEG becomes positive (i.e. until the amount of energy needed for the plant infrastructure has been harvested from the plant).
NEG is mainly used when energy comes from bio- or nuclear sources.
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Do you want to know more?
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| Source | Link |
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| Wikipedia | https://en.wikipedia.org/wiki/Net_energy_gain |
| Science Direct | https://www.sciencedirect.com/topics/engineering/energy-gain |
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