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      11-20-2017, 11:16 PM   #61
JamesNoBrakes
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Drives: 428i xdrive GC
Join Date: May 2015
Location: Alaska

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Quote:
Originally Posted by CO_Steve View Post
Some completely back of the envelope calculations:

Fuel at power source-> truck-> car -> motion.
Say the truck averages 500 miles per haul @ 5mpg = 100 gals lost out of 10k gallons delivered = 99% efficient. Double it to be conservative.
Cars internal combustion engine maybe 20% efficient.
Total 19% efficient.

Fuel at source->power plant->transmission lines->charge battery-> battery drives wheels.

From estimates I can find:
Power plant efficiency 35%
Transmission efficiency 92%
Battery charging efficiency 80%
Electric motor efficiency - depends on load, average 60% (generous)
.35x.92x.8x.6=15%

19>15 and we already have everything in place.
Naw, many cities are using gas turbines now, some above 65% efficiency. Look up the technology. Nuclear is horridly inefficient, due to the extreme amount of infrastructure it takes to make the plant, it takes an extreme amount of money and has not turned out to be more efficient or cheaper in many cases, hence the popularity of renewable and gas turbine power generation.