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Electric Vehicles - Impact on electrical network. Survey of vehicle uptake.

Former Community Member
Former Community Member
Dear IET forum,

I am carrying out research into the impacts of the projected surge of electric vehicle uptake on the local network infrastructure. The results will be used as part of my Technical report for Ceng. Please could you spare 2 minutes completing the survey in the link below? Its very short I assure you and completely anonymous. My aim is to understand a sample of peoples views on them personally taking up ownership of electric vehicles and if the pandemic may have changed their future car ownership behaviours. 

When complete i can post the results here and if you are interested make a comment and i can send you the finished technical report.

Much appreciated, thank you in advance.!
https://www.surveymonkey.co.uk/r/CC7GJSB

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  • Former Community Member
    0 Former Community Member
    The impact on the electrical network? Well the national grid may claim everything is rosy but ask about the local loop and the subloop. The DNOs are going to struggle, both with local capacity and with resource to supply. 


    Reason?


    The slow chargers run at 30 amps (not the trickle chargers but the 7.2kw chargers). The average cut out in a premise is 60 amps. 100 amps in new builds but most housing stock is old. So you will be putting 50% of your supply capability into a constant load to charge your car - that's one car. If I have 2 cars? My entire household supply needs to be dedicated to my cars. That's the entire load. No kettle, shower or immersion heater. 3 cars - forget it.


    Now this leads me to point 2 and this is first hand experience. Even with the gradual uptick in people taking fully electric cars now, SSE cannot cope with the demand for load checks and premise cut out upgrades to make the jump from 60 to 80 amps. They cannot even give a lead time. A simple job that should be as simple as a fuse change (3 minutes) is currently taking many many months. I am 2 months in to my load check, my neighbour, 5 months - still no lead time.


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  • Former Community Member
    0 Former Community Member
    The impact on the electrical network? Well the national grid may claim everything is rosy but ask about the local loop and the subloop. The DNOs are going to struggle, both with local capacity and with resource to supply. 


    Reason?


    The slow chargers run at 30 amps (not the trickle chargers but the 7.2kw chargers). The average cut out in a premise is 60 amps. 100 amps in new builds but most housing stock is old. So you will be putting 50% of your supply capability into a constant load to charge your car - that's one car. If I have 2 cars? My entire household supply needs to be dedicated to my cars. That's the entire load. No kettle, shower or immersion heater. 3 cars - forget it.


    Now this leads me to point 2 and this is first hand experience. Even with the gradual uptick in people taking fully electric cars now, SSE cannot cope with the demand for load checks and premise cut out upgrades to make the jump from 60 to 80 amps. They cannot even give a lead time. A simple job that should be as simple as a fuse change (3 minutes) is currently taking many many months. I am 2 months in to my load check, my neighbour, 5 months - still no lead time.


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