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Old 11-28-2010, 04:07 PM
 
15,924 posts, read 16,859,369 times
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This comes via Slashdot, charging your electric car *could* knock out the transformer in your neighborhood:

First Electric Cars Have Power Industry Worried - Slashdot

Cities/neighborhoods that will have large populations of electric vehicles are the ones most vulnerable.
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Old 11-28-2010, 08:44 PM
 
15,758 posts, read 13,184,034 times
Reputation: 19646
Quote:
Originally Posted by plwhit View Post
This comes via Slashdot, charging your electric car *could* knock out the transformer in your neighborhood:

First Electric Cars Have Power Industry Worried - Slashdot

Cities/neighborhoods that will have large populations of electric vehicles are the ones most vulnerable.
Your link says most cars pull 3K watts and some may eventually pull 6K watts. A single 5 ton AC or 60K BTU (not an uncommon size for a decent sized house) bulls about 14K watts. Not really sure why it would be so much worse to charge a car that pulls less than half the wattage of an AC unit?
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Old 11-29-2010, 02:03 PM
 
Location: Planet Eaarth
8,957 posts, read 17,013,046 times
Reputation: 7193
Quote:
Originally Posted by plwhit View Post
This comes via Slashdot, charging your electric car *could* knock out the transformer in your neighborhood:

First Electric Cars Have Power Industry Worried - Slashdot

Cities/neighborhoods that will have large populations of electric vehicles are the ones most vulnerable.
I'm sitting here laughing my butt off that finally someone woke up to the fact that the power grid in America won't be able to handle much more load let alone a bunch of electric cars.
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Old 11-29-2010, 02:29 PM
 
Location: Middle Tennessee
184,037 posts, read 74,998,898 times
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There is always a straw that breaks the camels back.
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Old 11-29-2010, 05:59 PM
 
26,912 posts, read 38,161,464 times
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Perhaps the wiz kids at the power companies should get off their moneyed butts and rebuild the grid. Wait! Silly me, what was I thinking?
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Old 11-30-2010, 04:51 PM
 
3,065 posts, read 3,696,142 times
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Rebuilding the grid costs money. Lots of money.

The reality is home power grids were not designed with everybody charging electric cars on top of everything else in their house in mind. It's easy for everybody to get on board with this whole "electric alternative energy" movement, but there are always unintended consequences. Sure, you release less emissions from fossil fuels into the air. But the coal plant that provides the electricity for you to charge your toy up releases more. Sure, you don't have to go to a gas station. But the power station down the road from your house becomes strained.

BMW is coming out with a 12 cylinder, hydrogen powered car that provides true "alternate energy fuel". But it won't catch on. Why? Because people here are all terrified of exploding gas tanks, even though it would basically never happen, and because nobody wants to spend money to create the infrastructure. Companies like Clean Energy (CLNE) are rolling out nat gas stations for people to use (and for those unaware, the US is basically the Saudi Arabia of natural gas), but people don't want to use it because it has the word "gas" in it.

So yeah, everybody clamor aboard the electric chugachoo. Let's sit back and watch what happens when we take a 30 year old power grid and try to force it to meet the higher demand.
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Old 11-30-2010, 06:18 PM
 
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So the power generation plants should be converted to natural gas instead of coal?
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Old 12-07-2010, 10:30 AM
 
Location: Brooklyn, New York
3,238 posts, read 3,479,986 times
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Quote:
Originally Posted by Xanathos View Post
Sure, you release less emissions from fossil fuels into the air. But the coal plant that provides the electricity for you to charge your toy up releases more.
Stop spreading myths. Even the dirtiest coal fired power plants in America release less stuff into the air compared to the equivalent amount of portable internal combustion engines in all those cars. This is simply a matter of industrial scale of production of energy.

If you have a thousand EVs charging from the dirtiest coal fired power plant in America, it will still be around 20% more efficient than a thousand average efficiency portable internal combustion engine cars. And if EVs are charged from a gas powered plant... this is not even a comparison.
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Old 12-07-2010, 04:25 PM
 
37,072 posts, read 38,307,603 times
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Quote:
Originally Posted by Tek_Freek View Post
So the power generation plants should be converted to natural gas instead of coal?
There's a lot of concern in my area about what it might do to the water supply. We're on top of the Marcellus Shale which has a lot of gas but it's trapped in the shale, they drill into the shale and then fracture it using water mixed with chemicals. The gas companies claims it's harmless and of course you have the doomsdayers claiming it will destroy the water supply, who to believe is always the question and I would guess it lies somewhere in between.

Coal mining has it's own issues but it's localized for the most part. Biggest concern is mine off which is going to have a lot of sulfur. Looks really bad and will kill the aquatic life but it can be mitigated and even fixed. These gas wells on the other hand have the potential to effect a great deal of water in the ground, it's pretty rural where they are drilling and everyone gets their water from wells. They even had gas bubbling up from the river...



http://www.youtube.com/watch?v=2wGlWiN_-BQ
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Old 12-08-2010, 09:50 AM
 
Location: Fortaleza, Brazil
2,545 posts, read 4,444,485 times
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Quote:
Originally Posted by Gantz View Post
Stop spreading myths. Even the dirtiest coal fired power plants in America release less stuff into the air compared to the equivalent amount of portable internal combustion engines in all those cars. This is simply a matter of industrial scale of production of energy.

If you have a thousand EVs charging from the dirtiest coal fired power plant in America, it will still be around 20% more efficient than a thousand average efficiency portable internal combustion engine cars. And if EVs are charged from a gas powered plant... this is not even a comparison.
Great point! EV's widespread adoption will cause a significant reduction in greenhouse gases emission, even if the electricity to charge it comes from non-renewable sources. And part of the electricity will come from clean and renewable sources, depending on the place where the EV will be.
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