Live data from Hacker News

Charging cars at home at night is not the way to go: study

news.stanford.edu

11–20 of 394 posts

Re: Charging cars at home at night is not the way to go: study

#13
post #4

This is simple. Musk just needs to throw 1% of his AI talent at optimizing charging times via realtime grid negotiating and nobody will need to even think about this. Cars will turn into one of our most valuable assets as they help stabalize the grid by being both sinks when energy is plentiful and sources when it's not. There are certain problems we all need to think about, but this is not one of them. It will effec…

Yeah, except now each parking spot at work needs its own power outlet.

Re: Charging cars at home at night is not the way to go: study

#15
post #7
post #4

This is simple. Musk just needs to throw 1% of his AI talent at optimizing charging times via realtime grid negotiating and nobody will need to even think about this. Cars will turn into one of our most valuable assets as they help stabalize the grid by being both sinks when energy is plentiful and sources when it's not. There are certain problems we all need to think about, but this is not one of them. It will effec…

So electric car owners need to just cover all the battery wear out of their own pockets? Wouldn't that make electric cars even more expensive since battery replacement will be needed more often?

Presumably the cost savings from charging when rates are the cheapest and potential incentives for feeding into the grid when necessarily will make up for that.

Re: Charging cars at home at night is not the way to go: study

#16
post #4

This is simple. Musk just needs to throw 1% of his AI talent at optimizing charging times via realtime grid negotiating and nobody will need to even think about this. Cars will turn into one of our most valuable assets as they help stabalize the grid by being both sinks when energy is plentiful and sources when it's not. There are certain problems we all need to think about, but this is not one of them. It will effec…

Tesla already has a beta of this with their "powerpacks" (batteries for houses instead of cars): https://www.tesla.com/support/energy/powerwall/own/californi...

Re: Charging cars at home at night is not the way to go: study

#17
>We're doing it wrong, according to a new Stanford study

Wrong according to what metric? Cost? Raw efficiency? A lot of people are more than willing to give up efficiency so that they don't have to actually worry about finding a station during the day. To say that something is just outright "wrong" based on their personal preference of priorities comes off as unhelpful to me.

The solution is simple. Make electricity cheaper when it's more available, and people will use it. You don't need any complex "AI" like people in this thread are saying, you just use natural market forces and the problem fixes itself. Too much energy being used at night - price increases. It's not complicated, and it's what we're doing already. People don't need a Stanford study to convince them to get their energy for cheaper.

Re: Charging cars at home at night is not the way to go: study

#18
I would be curious about a study done for the Texas market.

From what I understand, you'd definitely want to charge at night due to the vast amounts of wind power available and the otherwise low demand.

Even better would be to plug the car in at all times when parked either at work or home and it just charges when the rate is cheapest. You don't need to charge every day to refill that 20 or 30 miles.

Re: Charging cars at home at night is not the way to go: study

#19
I personally think Govt should ban home charging if they are going to ban non-EV vehicles.

How is that rich people with homes charge at home while everyone else has to queue up and waste their time at charging stations.

Doesn't seem fair at all. Its a extra time tax on the poor.

Re: Charging cars at home at night is not the way to go: study

#20
> Current time-of-use rates encourage consumers to switch electricity use to nighttime whenever possible, like running the dishwasher and charging EVs. This rate structure reflects the time before significant solar and wind power supplies when demand threatened to exceed supply during the day, especially late afternoons in the summer.

So, if you have a grid that doesn't heavily rely on solar then charging at night makes sense.

> Today, California has excess electricity during late mornings and early afternoons, thanks mainly to its solar capacity. If most EVs were to charge during these times, then the cheap power would be used instead of wasted.

How are people going to charge their cars during commutes?

Post reply on HN