darth_vad3r
Well-Known Sith
I feel that we are worrying over things a lot smaller.
Perhaps, but we are in the right forum to do so!
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I feel that we are worrying over things a lot smaller.
From what I understand from the explanation, the overhead is the same whether you are charging at 120 or 240. So if you are charging for a fixed period of time the "overhead" is still the same and still the same cost.You can’t exclude the overhead from your power bill!
I think the only real cost difference really comes into play is that charging at 120V will take longer for the same amount of power so you are paying for the overhead for a longer period of time. Otherwise, the cost of charging is exactly the same because you pay by kw not time.You could theoretically charge X amount in one hour at 120V and if the charging efficiency was the same, charge the same X amount in 30 minutes at 240V. The extra half hour spent at 120V you have to still “pay to keep the lights on” (car fixed overhead).
I don't really disagree, but just how much $$ does it matter. 2kWh @ $0.10/kWh is only 20 cents.
I went $300 all in to get a 240V installation here. I had two estimates, the same.I think the amount is larger than you think (or I recently did all my calculations wrong).
Where I live costs are about 0.20/kWh. For 10K miles per year that equates to roughly $192 EXTRA to charge via 120V. If you bump that up to 0.47/kWh that was mentioned in this thread that is about $452 EXTRA per year to charge via 120V. It just helps an EV owner make a more informed decision. For my charging trends I'm going to put off the upgrade to 240V because right now it is not worth the cost for installation and supplies. But if we get a second EV soon I would likely jump at the upgrade because of the time and money savings.
I think the amount is larger than you think (or I recently did all my calculations wrong).
Where I live costs are about 0.20/kWh. For 10K miles per year that equates to roughly $192 EXTRA to charge via 120V. If you bump that up to 0.47/kWh that was mentioned in this thread that is about $452 EXTRA per year to charge via 120V. It just helps an EV owner make a more informed decision. For my charging trends I'm going to put off the upgrade to 240V because right now it is not worth the cost for installation and supplies. But if we get a second EV soon I would likely jump at the upgrade because of the time and money savings.
I don't know that is what happens, but it's a possibility.
Have you been here, though?! (sarcasm) This is an enthusiast forum. People aren't having any of that if you just tell them, "Don't worry about it." I've seen that, and they will not accept that answer, because they say they know it's not completely vital, but they want to find out what is best, what is ideal, even if it makes very little difference. And I would agree for myself, that I would want to know the ideal, but it's up to me how close I want to try to get to that and if it's worth the effort.
So I try to stick with what is informative, but not scary. I tell people that best is staying nearer to the middle state of charge, but each person has to balance that with having enough range for their own comfort level to have the car be practical and usable. That way, each person gets to know it's a balanced preference decision and doesn't feel like they are breaking a rule if someone says some exact number but their circumstances mean they need to go a little outside that.
I think the amount is larger than you think (or I recently did all my calculations wrong).
Where I live costs are about 0.20/kWh. For 10K miles per year that equates to roughly $192 EXTRA to charge via 120V. If you bump that up to 0.47/kWh that was mentioned in this thread that is about $452 EXTRA per year to charge via 120V. It just helps an EV owner make a more informed decision. For my charging trends I'm going to put off the upgrade to 240V because right now it is not worth the cost for installation and supplies. But if we get a second EV soon I would likely jump at the upgrade because of the time and money savings.
And you think that's simpler than my single statement of "middle is better, but give yourself enough range"? Sure.People want simple answers. (*gives a list of 6 rules to try to remember*)
From what I understand from the explanation, the overhead is the same whether you are charging at 120 or 240. So if you are charging for a fixed period of time the "overhead" is still the same and still the same cost.
I think the only real cost difference really comes into play is that charging at 120V will take longer for the same amount of power so you are paying for the overhead for a longer period of time.
Otherwise, the cost of charging is exactly the same because you pay by kw not time.
But $0.47/kWh isn't a representative cost.
My winter rate, for 8 months of the year is less than $0.05. (less than $40/yr then)
There's a lot of users for which 120V IS the RIGHT DECISION.
So many people assume that 120V is not an option. For many people it is a quite viable option.
But $0.47/kWh isn't a representative cost. AFAIK, $0.20 is higher than the average cost across the country. A lot of places have summer and winter rates with winter being significantly cheaper. My winter rate, for 8 months of the year is less than $0.05. (less than $40/yr then)
So many people assume that 120V is not an option. For many people it is a quite viable option.
Reviving an old thread but wanted some opinions. We are building a new house and have a Model 3 but will likely get a Y in the next year. I requested one 240v outlet in the garage instead of two thinking that the car that needed a faster charge could use it as needed while the other uses a 120v, I received a free HPWC through referrals and will install that at the 240v. I’ve used a 120v so far and been ok but winter is tough when it gets very cold. They charge $550 for a 240v, 60amp. Is it worth it to pay for two to future proof or is it just overkill, right now we drive less that 30 miles a day unless we make a trip. I just can’t make up my mind if the second is necessary or overkill. I realize there is some cost savings with 240v and I went 60amp even though I can’t utilize it all to try and future proof.
Reviving an old thread but wanted some opinions. We are building a new house and have a Model 3 but will likely get a Y in the next year. I requested one 240v outlet in the garage instead of two thinking that the car that needed a faster charge could use it as needed while the other uses a 120v, I received a free HPWC through referrals and will install that at the 240v. I’ve used a 120v so far and been ok but winter is tough when it gets very cold. They charge $550 for a 240v, 60amp. Is it worth it to pay for two to future proof or is it just overkill, right now we drive less that 30 miles a day unless we make a trip. I just can’t make up my mind if the second is necessary or overkill. I realize there is some cost savings with 240v and I went 60amp even though I can’t utilize it all to try and future proof.
Well, you USED to be able to do that with the version2 wall connectors. Tesla made the boneheaded, idiotic, moronic, short-sighted, infuriating, pathetic decision to replace the version2 with the version3 that does not have this most used feature!!!!!! They say that they plan to implement that at some unknown point in the future with a software update!Can't you put two Tesla wall connectors on the same circuit and they will share power draw? Then you can have either car charging at max rate, depending on need, and not have to install a whole secondary line and breaker, etc.
Load Sharing - TESLA Wall Connector
Hahahahahahahahahahaha! Really!? Brilliant.Well, you USED to be able to do that with the version2 wall connectors. Tesla made the boneheaded, idiotic, moronic, short-sighted, infuriating, pathetic decision to replace the version2 with the version3 that does not have this most used feature!!!!!! They say that they plan to implement that at some unknown point in the future with a software update!
Well guess what? IT WASN'T READY TO RELEASE THEN! They should have waited on switching over to the version3 until they had that feature ready to go in the initial release of that product since that functionality is so vital.
(And no, they still haven't implemented it.)