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Old 03-27-2019, 02:31 PM   #5446 (permalink)
aerohead
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2016

Quote:
Originally Posted by oil pan 4 View Post
In 2016 for the US nuclear made almost 20%, hydro made 6.5% wind made 5.5% and everything else made 4%.
I don't think those add up to 20%
The values I posted were for 2017,EIA.
And they are for only energy actually produced domestically,no foreign energy (of which we bought 23.7-quads).
*Natural gas was 31.77%
*Crude oil was ... 22.31%
*Coal was ......... 17.82%
*Renewable was . 12.7%
*Nuclear was ..... 9.6%
*Natural gas liquids 5.76%
Total domestic production was 87.64-quadrillion Btus.
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I purposely left out foreign energy sources to illustrate 'actual' US energy capacity.
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One glaring omission from the EIA data,is that they do not parse out 'feedstock' energy inputs,versus net produced energy output.
For instance,a light water reactor only harvests about 1% of the energy contained in the fuel rods.
And the best Integrated Gasification Combined Cycle coal-fired power plant has a thermal efficiency of,say,44%,so if it wheeled 15.62 quads of electric power onto a hub,it burned 35.5 quads worth of coal to get there,losing 56% of it's fuel's chemical energy potential to entropy.
*As of 2010,the best turbine was rated at 52% conversion efficiency,and after the cost is amortized out,it's 'fuel' is free.
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