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| “Battery EV” vs “Hydrogen Fuel cell EV” |
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| tom66:
--- Quote from: Miyuki on November 21, 2021, 11:36:35 am ---How many hours a day do you drive 1, 2, do not tell me you drive more than 2 hours a day The rest of the time car just sits somewhere and can scavenge low demand/renewable production peaks from the network Grid is enough "smart" for it even today And how long it will take till BEV will be the majority? 10, 15 years? --- End quote --- This - almost every EV comes with a 'smart app'. There is even a reverse-engineered API for my vehicle: https://github.com/trocotronic/weconnect I have been using this to start and stop charging remotely with charging to a specific state of charge (as the car always charges to 100% when on the timer function, and I don't always need 100%, even with a PHEV.) The connectivity of the vehicle to the grid will be very important. |
| not1xor1:
the last nail on the coffin :) https://theconversation.com/we-must-rapidly-decarbonise-road-transport-but-hydrogens-not-the-answer-166830 --- Quote ---In fact, hydrogen vehicles and vehicles that run on petrol or diesel have a similarly low energy performance: just 15-30% of the available energy in the fuels is used for actual driving. Compare this to battery electric vehicles, which use 70-90% of the available energy. In other words, the amount of renewable energy required for a green hydrogen vehicle to drive one kilometre is the same as what’s required for three electric vehicles to drive the same distance. --- End quote --- |
| PlainName:
--- Quote ---How many hours a day do you drive 1, 2, do not tell me you drive more than 2 hours a day --- End quote --- What's driving got to do with it? The thing is where the car is, and daytime it is likely not at home. Doesn't matter where on Earth it is - the point is it is not at home sucking up premium rate electricity. When it IS at home, it is likely to be cheap rate electricity. So, as an energy supplier, you look at your graphs and think, "Hang on, we are giving them cheap energy when we don't have that much available and could sell it twice over because everyone wants to charge their EV. WTF? Why is it cheap rate?" If the car is at <your workplace> the chances are it's not getting a discount on juice because businesses are kind of known for needing lots of power, all at the same time, which is why daytime usage isn't cheap rate. If you plug in there and never charge at home, this little bit of the discussion doesn't involve you. I will just remind you that not a million messages ago the overriding feeling is the home charging is going to be The Thing. |
| Miyuki:
A common day in Europe is like this As solars kick in during the day prices fall So "they" have plenty of electricity that needs to be used somewhere and EV charging is a great opportunity |
| PlainName:
1. What are those nice blue and red lines? Means nothing unless we know what they represent. 2. Doesn't matter if solar is fantastic enough to provide zero-cost charging during the day. We, or at least I, am not talking about daytime charging. I am talking about charging overnight. Blimey, doesn't anyone actually read this stuff of do y'all just look at pretty letters and then hit quote? |
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