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Stress on the grid

Discussion in 'Charging and Infrastructure' started by iSpyLife, Apr 26, 2017.

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  1. iSpyLife

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    So I was thinking about this the other day... With the issues we currently have going on in some of the major cities in regards to rolling blackouts when the national grid becomes stressed from overuse, how do we think adding more and more electric vehicles will impact this? Has anyone seen/heard/read anything about research being done on this subject? I know that not all of the reservations are U.S. residents, so lets just say half, about 200,000 cars being plugged in, stressing that grid out more... Will we see more rolling blackouts? Are electric companies readying for the impact of many more charging cars being added over the next ~2 years? What do you think?
     
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  2. BigBri

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    Charging overnight will be the answer. Some utilities are giving incentives to owners to do this already and it'll probably expand as time goes on. Unless in a pinch it'll always be ideal to charge during off peak so utilities aren't turning on dirty generators.
     
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  3. Jayc

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    I agree.

    I also think eventually, EVs will get charged throughout the day whenever there is excess generation capacity in the system so effectively they become part of the control system that manages grid capacity.
     
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  4. Daliman

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    Part of the solution is charging mostly at night when most grìds have vastly more capacity than is needed. The spread of solar panels and home batteries will help a lot if it becomes part of a package as Tesla plans. While widespread adoption of EVS will add to electricity usage there will also be large users like oil refineries that shrink in usage. There is a video from Fully Charged on the site in another thread that explains the impact of this really well.
     
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  5. garsh

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    If Tesla succeeds in driving costs down further, home rooftop solar will start to offset daytime peak load.
     
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  6. @gravityrydr

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    Some good articles on this:
    From MIT Technology review: Could electric cars threaten the grid.

    From NAVIGANT RESEARCH BLOG: Plug-In Vehicles: For Utilities, More Opportunities than Challenges.

    And finally from the country with the highest per capita BEVs a paper from the Norwegian University of Life Sciences:
    Impact of charging of electrical vehicles on the Norwegian distribution.

    There are a few scare articles out there mostly quoting a paper from the Green Alliance. The paper seems to be stating the worst case scenario to bolster power grid upgrades How consumer choice is changing the UK energy system.
     
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  7. Badback

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    And don't forget the electricity that will be saved by not refining gasoline.
     
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  8. MelindaV

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    as related to everything else, the car doesn't use a huge amount of electricity. for comparison, a 250watt refrigerator would use 6kWh/day. 6kWh could also get you around 25 miles of driving (assuming 55kWh for 225 miles). My commute is about 27 miles round trip and well under the speed limit (so probably could do better than 25miles/6kWh rate) and rarely end up with that many miles on the car over the weekend days - so for me, the Tesla would have less of an impact than my refrigerator.
    play around with this energy calculator to get an idea of what various items are using over x hours (like 3kWh to run an electric dryer for 1hour! or 36kWh to run an electric furnace for 2 hours...) then convert what you find to how many miles that would equate to.
     
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  9. Topher

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    Done correctly, electric cars will reduce stress on the grid. Heck, if it is replacing a ICE car with less than about 25 MPG, it will be reducing total energy through the grid. Additionally, electric cars seem to be a gateway drug to personal solar panels.

    Thank you kindly.
     
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  10. Badback

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    Just for reference: http://gatewayev.org/how-much-electricity-is-used-refine-a-gallon-of-gasoline

    "Your average EV can go 16 miles on 4kwh (20 miles on 7.5kwh)- so that’s on the electricity used to just to refine that gallon of gas, never mind the energy used to extract and transport the oil, and the tailpipe emission."
     
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  11. iSpyLife

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    Awesome information guys. So interesting! Im currently driving a Toyota FJ Cruiser... 17MPG, so this information just blows my mind. I cant wait to go electric and laugh as I pass the petrol stations!
     

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