Hogging - Wikipedia, the free encyclopedia

Greedily eating something, or taking too much of it: see wikt:hogging

So an energy hog would be something that use (too) much energy.

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The diagram actually says if you know the figures for each stage, add all the energy gains, minus all the energy costs, the difference is the net energy.


I've been accused of being a Marxist, yet while Harpo's my favourite, it's Groucho I'm always quoting. Odd, that.

If you originally meant to make the point that the energy input of construction is much less compared to annual production than indicated on the graph, you may have been right. But, being the nitpicker, I have to put the figures right.

This source claims the Olkiluoto 3 EPR is 250,000 m³ concrete (about 600,000 t) and 52,000 t steel. Calculating with 20 GJ/t for steel and 1.6 GJ/m³ for concrete, I get 1.44*10^15 J, or 0.4 TWh. I don't know how to estimate the energy use to move the excavation volume of 450,000 m³ and the energy input of the making and transport of other building materials, but the total is probably not magnitudes higher. Against this stands an annual production of 14 TWh at a high capacity factor of 97%.

Then again, the real question marks still concern the enegy input of making the fuel and decommissioning.

_{*Lunatic*, n.
One whose delusions are out of fashion.}