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  1. #11
    VXR Adam"san" w20adm's Avatar
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    Quote Originally Posted by Natholomew View Post
    It's incredibly naive and shortsighted for governments to impose these ideas without understanding the technology. There are a few reasons why a complete switch to electric vehicles in 2030/2040 won't be feasible or will be a stupid idea:

    Emissions: Despite how green the media and car companies would have you believe electric cars are, in the UK, over 50% of the electrical energy we produce comes from fossil fuels. Sure, power stations can burn fuels more efficiently, but that efficiency is lost because you lose about 15% energy as heat when you charge the batteries and another 15% when the batteries are discharged to power the car. The emissions are taken out of the cities which is a good thing, but does nothing for climate change. Until we can produce more energy from renewable and nuclear, our emissions will remain about the same.

    Power Grid: It's estimated that by 2030, we'll need an extra 18GW of power to charge our electric cars. Most of this power will be demanded at peak times already when people arrive home from work. All this extra power and yet no infrastructure improvement has been set out by our government.

    Battery Tech: We are pretty much at the limit of energy density in lithium ion/polymer batteries, yet the range of electric cars is notoriously poor. Range figures given are always best case scenarios which don't account for driving with lights on, cabin heating, A/C etc. The most important thing which they neglect to tell you is just how much battery capacity decreases with temperature drop. Almost everyone has experienced a struggling battery in the winter. The capacity of a lithium ion battery can almost half from 20C down to -20C. That's half the range for most European countries in the winter.

    Economy: By the time 2030 rolls around, batteries will be considerably more expensive to reproduce. This is because the price of lithium is going up, reserves are going down and finding it is getting harder. It's as if these people think that lithium is an unlimited resource. The UK imports 35% of its total energy. When the countries we import from go electric and they need the electricity, they will charge more for us to import so the price of electricity will go up.

    Charging Points: For a lot of people who live in towns and cities, charging their cars every night will be impractical. What about the people who live in flats? Or the people who have to park on a public road with no reserved space? Are they supposed to run a 50m cable from their house to their car?
    Need some serious innovation in the next decade ...
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  2. #12
    VXRed Natholomew's Avatar
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    Quote Originally Posted by w20adm View Post
    Need some serious innovation in the next decade ...
    Unfortunately major battery innovation has been 2 years away for the last 10 years.

    Regardless, there will always be a market for petrol/diesel cars, so phasing them out completely is ridiculous.

  3. #13
    VXR Adam"san" w20adm's Avatar
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    It's just interesting. New cars don't hang around, after 3 years everyone moves onto a new lease deal these days so it won't be long until production has ceased and the 3 subsequent years have passed, but this time there's not been enough resolution to solve the electricity problem. Will this see people just hang onto their now 3+ year old ICE cars??? ......
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