EV (electric vehicle) News & Discussion

Forums › Transport (cars, bikes and boats) › EV (electric vehicle) News & Discussion

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8911 posts

Uber Geek

#2467663 22-Apr-2020 10:58

@Dodgeyboye your post isn't really EV news. Perhaps start a thread with the question you are wanting to ask, and include what sort of vehicle you are wanting to buy tires for.

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Obraik

2121 posts

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#2477326 5-May-2020 21:16

Can EV batteries be recycled?

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HarmLessSolutions

956 posts

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#2485808 18-May-2020 18:51

Linuxluver:

The lockdown has seen my EV (30kWh LEAF) being used very little. Just to the supermarket and back. It's about 3km round trip. Once a week, but was a couple of times / week in the first week or so.

I charge it from solar on my house. Last charge was Tuesday, March 21st. Just over 3 weeks ago. I had charged it to 80%. It's now on 62% after 30.2km. At this rate, I may not have to charge it for almost 2 more months. :-)

How is the lockdown affecting your EV?

Our 24kWh LEAF has had much reduced use since before the start of lockdown as it is my partner's work commuter (~60km/day) and she's now working from home. Reduced driving and power bill as a result. The aged Commodore which is our #2 has only been started once in 2 months, to make sure the battery retained charge.

Interesting comments from Robert Llewellyn recently regarding charging and (older) LEAFs. In his experence the biggest threat to battery longevity is charging minimally discharged batteries. Bit of a catch 22 when older LEAFs have a limited range already but those little 'top-ups' seemingly are more damaging than fast charging according to Robert.

https://www.harmlesssolutions.co.nz/

DS248

1691 posts

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#2486090 19-May-2020 09:36

https://www.stuff.co.nz/environment/climate-news/121502497/why-aucklands-transport-billions-might-not-move-the-climate-change-dial

"...

If you really want to reach those carbon emission goals, head for the slide where you can increase the proportion of electric cars in Auckland's fleet, of where the number of any kind of trips taken reduces."

HarmLessSolutions

956 posts

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#2486094 19-May-2020 09:48

DS248:

https://www.stuff.co.nz/environment/climate-news/121502497/why-aucklands-transport-billions-might-not-move-the-climate-change-dial

"...

If you really want to reach those carbon emission goals, head for the slide where you can increase the proportion of electric cars in Auckland's fleet, of where the number of any kind of trips taken reduces."

Increasing EV ownership is only part of the issue. So long as Huntly Power Station is burning coal to supplement NZ's generation capacity increasing EV numbers may be counterproductive in terms of CC effects. If increased EV numbers are backed with incentivisation of PV uptake then we'll really start to get somewhere. Cars 'running on sunshine' either from domestic PV installations or from larger scale commercial set-ups largely take the CO2 issue out of the picture.

https://www.harmlesssolutions.co.nz/

wellygary

8253 posts

Uber Geek

#2486096 19-May-2020 09:54

DS248:

https://www.stuff.co.nz/environment/climate-news/121502497/why-aucklands-transport-billions-might-not-move-the-climate-change-dial

"...

If you really want to reach those carbon emission goals, head for the slide where you can increase the proportion of electric cars in Auckland's fleet, of where the number of any kind of trips taken reduces."

The problem is you are fighting the tide,

The underlying model assumes that population ( and therefore all forms of pollution, Co2 etc) will rise by 33% in 12 years (based on population rising from 1.5m in 2018 to 2 m in 2030)

With that as your base you have to cut emissions by 25% in 2030 just to be back where you are now......

tdgeek

29638 posts

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#2486104 19-May-2020 10:10

HarmLessSolutions:

DS248:

https://www.stuff.co.nz/environment/climate-news/121502497/why-aucklands-transport-billions-might-not-move-the-climate-change-dial

"...

If you really want to reach those carbon emission goals, head for the slide where you can increase the proportion of electric cars in Auckland's fleet, of where the number of any kind of trips taken reduces."

Increasing EV ownership is only part of the issue. So long as Huntly Power Station is burning coal to supplement NZ's generation capacity increasing EV numbers may be counterproductive in terms of CC effects. If increased EV numbers are backed with incentivisation of PV uptake then we'll really start to get somewhere. Cars 'running on sunshine' either from domestic PV installations or from larger scale commercial set-ups largely take the CO2 issue out of the picture.

Sun doesnt shine at night when the car is home. Then there is Winter. Battery? Well if you pay $18000 for a battery that hold 13.5kW at 16c value, say $2 worth of power, thats a LONG payback. Id love solar PV but its not worth it. Its minimals benefit in the 6 months you need power, and its plenty there when you dont need it in the warm 6 months. Some can make it work if they use it all

MarkH67

517 posts

Ultimate Geek

#2486107 19-May-2020 10:14

HarmLessSolutions:

Increasing EV ownership is only part of the issue. So long as Huntly Power Station is burning coal to supplement NZ's generation capacity increasing EV numbers may be counterproductive in terms of CC effects.

That doesn't sound right at all. Are you really saying that as long as Huntly operates then EVs are worse than petrol & diesel cars?

100% coal generation would have EVs ahead of petrol & diesel due to greater efficiency of a large power plant compared to millions on small engines, but by a much smaller margin than if using renewables. Of course we don't generate 100% of our electricity from coal, it would be more like 10%.

I would agree with the idea of building more renewable electricity generation and looking to decommission the Huntly plant, I look forward to the day when NZ generates 0% of its electricity from burning fossil fuels. That should be the aim of every country in the world IMO.

SaltyNZ

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#2486116 19-May-2020 10:24

HarmLessSolutions:

DS248:

https://www.stuff.co.nz/environment/climate-news/121502497/why-aucklands-transport-billions-might-not-move-the-climate-change-dial

"...

If you really want to reach those carbon emission goals, head for the slide where you can increase the proportion of electric cars in Auckland's fleet, of where the number of any kind of trips taken reduces."

Increasing EV ownership is only part of the issue. So long as Huntly Power Station is burning coal to supplement NZ's generation capacity increasing EV numbers may be counterproductive in terms of CC effects. If increased EV numbers are backed with incentivisation of PV uptake then we'll really start to get somewhere. Cars 'running on sunshine' either from domestic PV installations or from larger scale commercial set-ups largely take the CO2 issue out of the picture.

Not only do I agree with @MarkH67's comment re efficiency, but also the pollution produced is now concentrated at Huntly rather than in the city where a much higher concentration of people are breathing it. In addition, that pollution from Huntly can (or at least should) be scrubbed much better than the fleet of small engines will. So for both reasons of efficiency and ease of cleaning, pollution is lower overall, and what pollution remains is now away from where most people have to breathe it.

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tdgeek

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#2486121 19-May-2020 10:48

SaltyNZ:

Not only do I agree with @MarkH67's comment re efficiency, but also the pollution produced is now concentrated at Huntly rather than in the city where a much higher concentration of people are breathing it. In addition, that pollution from Huntly can (or at least should) be scrubbed much better than the fleet of small engines will. So for both reasons of efficiency and ease of cleaning, pollution is lower overall, and what pollution remains is now away from where most people have to breathe it.

Trouble is, it will take decades upon decades to migrate 1.6M vehciles to electric, yet if a Govt wanted to replace Huntly with green energy that would take far less time. Plus, Hybrids are the go, as they are well priced

maxeon

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#2486137 19-May-2020 10:53

tdgeek:

Sun doesnt shine at night when the car is home. Then there is Winter. Battery? Well if you pay $18000 for a battery that hold 13.5kW at 16c value, say $2 worth of power, thats a LONG payback. Id love solar PV but its not worth it. Its minimals benefit in the 6 months you need power, and its plenty there when you dont need it in the warm 6 months. Some can make it work if they use it all

I can give you my example. I have recently installed 20 panels and Tesla Battery. Monthly average savings is 200 dollars.

I spent 30k for the entire setup by taking up a home loan topup for it at 3.5% interest. That's nearly 1200 dollars in interest per year to save 2400 in power per year. My net savings are 1200 approx per year. ROI is very low however I own the hardware for years and it goes with the house.

I get to keep it and sell it as part of my house chattle. If you look it at as an investment that can sell when you do sell the house, it might be worth it.

Obraik

2121 posts

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#2486146 19-May-2020 11:14

HarmLessSolutions:

DS248:

https://www.stuff.co.nz/environment/climate-news/121502497/why-aucklands-transport-billions-might-not-move-the-climate-change-dial

"...

If you really want to reach those carbon emission goals, head for the slide where you can increase the proportion of electric cars in Auckland's fleet, of where the number of any kind of trips taken reduces."

Increasing EV ownership is only part of the issue. So long as Huntly Power Station is burning coal to supplement NZ's generation capacity increasing EV numbers may be counterproductive in terms of CC effects. If increased EV numbers are backed with incentivisation of PV uptake then we'll really start to get somewhere. Cars 'running on sunshine' either from domestic PV installations or from larger scale commercial set-ups largely take the CO2 issue out of the picture.

Huntly's coal contribution is minimal even when it's at full capacity. On the rare occasion that it is operating at full capacity, coal produced power makes up only 5%. Even if it was higher, there's been numerous studies showing that EVs powered only by coal still have a lower carbon footprint than an ICE vehicle.

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tdgeek

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#2486148 19-May-2020 11:16

maxeon:

I can give you my example. I have recently installed 20 panels and Tesla Battery. Monthly average savings is 200 dollars.

I spent 30k for the entire setup by taking up a home loan topup for it at 3.5% interest. That's nearly 1200 dollars in interest per year to save 2400 in power per year. My net savings are 1200 approx per year. ROI is very low however I own the hardware for years and it goes with the house.

I get to keep it and sell it as part of my house chattle. If you look it at as an investment that can sell when you do sell the house, it might be worth it.

20 panels so thats around 6.6kW? Mate has 9kW, PW2, I have his PW2 app on my phone, Winter its low, when you need it. Summer its high when you dont need it, if youve been saving 200 per month you won't do that in the winter months, not even close. If you get the right size, if you timeshift, you can maximise it, and the key benefit is after the so called payback its free, but its better on a long term house ownership IMO. The PW2 is very cool, but it will take a lifetime to recover the cost, they need to be cehaper. His was 15k went up to 18k, I assume they are dropping maybe. PV is a great idea but for many it doesnt add up. Solar HW does though, thats excellent

HarmLessSolutions

956 posts

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#2486150 19-May-2020 11:16

tdgeek:

Sun doesnt shine at night when the car is home. Then there is Winter. Battery? Well if you pay $18000 for a battery that hold 13.5kW at 16c value, say $2 worth of power, thats a LONG payback. Id love solar PV but its not worth it. Its minimals benefit in the 6 months you need power, and its plenty there when you dont need it in the warm 6 months. Some can make it work if they use it all

I too realise that currently battery technology hasn't gained economical viability for most domestic generators.That was why I included a mention of "larger scale commercial set-ups". If an EV owner is unable to schedule work to enable daytime home charging (as is the case with us as my partner who normally commutes s now working online from home) then the alternative is where employers offer workplace EV charging supported by commercial scale PV at the workplace.

Until such time that battery technology conquers cost viability the best solution is to change our usage characteristics to enable consumption of EV generation as it occurs.

https://www.harmlesssolutions.co.nz/

tdgeek

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#2486169 19-May-2020 11:25

HarmLessSolutions:

tdgeek:

Sun doesnt shine at night when the car is home. Then there is Winter. Battery? Well if you pay $18000 for a battery that hold 13.5kW at 16c value, say $2 worth of power, thats a LONG payback. Id love solar PV but its not worth it. Its minimals benefit in the 6 months you need power, and its plenty there when you dont need it in the warm 6 months. Some can make it work if they use it all

I too realise that currently battery technology hasn't gained economical viability for most domestic generators.That was why I included a mention of "larger scale commercial set-ups". If an EV owner is unable to schedule work to enable daytime home charging (as is the case with us as my partner who normally commutes s now working online from home) then the alternative is where employers offer workplace EV charging supported by commercial scale PV at the workplace.

Until such time that battery technology conquers cost viability the best solution is to change our usage characteristics to enable consumption of EV generation as it occurs.

Im not sure what it would takle to replace Huntly with green, but if we decide to wait till everyone drives an EV, thats decades too late

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