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Gold/Mining/Energy : Gold and Silver Juniors, Mid-tiers and Producers
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To: AuBug who wrote (60082)6/21/2008 10:17:38 AM
From: E. Charters  Read Replies (1) of 78410
 
I think at 150 bucks a tonne, the fuel cost of generating electricity from the coal would be 0.06 dollars per KW hour, but I am not sure on that calc. I take that from how much CO2 coal produces per KW hr. (7.78 * 10^-4 tonnes per KWH.)

One BTU equals 2.93 X 10^-4 KW hrs. But electric conversion efficiency is only 35% on average. New high heat turbines or Stirling engines promise about 46%, so we will use the higher figure.

9300 btu/lb coal should produce 4278 BTU's of electricity at 46% efficiency. This is 1.25 KW hrs of electricity. (1 KW hr - 3413 BTU's)

If GXS coal cost say, 120 dollars per tonne, then a lb of it would cost $0.054. 5.4 cents. At best the cost of making electricity by the fuel cost would be 0.054/1.25 = $0.043/KW hour. Reasonable.

Of course we know with fuel prices today, domestic energy costs must increase. If coal, which makes the majority of the world's electricity increases in price by 3 to 5 times in 8 years, then electricity must play catch up, as politicized as its prices usually are. Utilities cannot go into hock or the infrastructure and industrial capacity of the nation breaks down.

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