EV (electric vehicle) News and Discussion

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#2234840 11-May-2019 09:32

wellygary:
The English greybeards can rejoice, Tesla have added a towing option to the RHD model 3..... Their Caravan vacations are saved.....

Although from an NZ point of view it might come in handy to stash a couple of mountain bikes..... or the occasional trailer hire...

https://thedriven.io/2019/05/10/tesla-model-3-now-has-a-tow-bar-has-elon-musk-saved-the-weekend/

That jockey wheel isn't going to last long at that speed.

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#2236298 13-May-2019 21:13

Jucy EV campers complete trial and hit the road with a higher spec:

Stuff: The self-contained vehicles will rent at approximately the same daily cost as their new ICE models, but at the equivalent of about 30 cents per litre, will have a fraction of the running costs, something Alpe claims will make it less expensive for tourists to travel around NZ.

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#2236321 13-May-2019 22:02

SaltyNZ:

That jockey wheel isn't going to last long at that speed.

Especially since it appears to be castoring so the Model 3 must be reversing at speed. That autopilot must be impressive to be able do that 😁 (while the driver looks where he’s been).

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boland

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#2236726 14-May-2019 15:06

Hi I am new to this topic. I've read a lot of posts in this thread, very useful.

Currently I've got solar panels at home, and looking at adding batteries. Main reason is to have power during an outage.

However, a PW2 costs roughly $18k. For that amount I can buy a 2nd hand Nissan Leaf.

I've searched a lot, but what are currently the options to use an EV as house battery? Is that possible, is that supported, any warranty issues?

So my plan would be to commute with the EV, and when I come home and the power is down, use the EV as backup, being charged by the solar panels.

SaltyNZ

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#2236728 14-May-2019 15:14

boland:
Hi I am new to this topic. I've read a lot of posts in this thread, very useful.

Currently I've got solar panels at home, and looking at adding batteries. Main reason is to have power during an outage.

However, a PW2 costs roughly $18k. For that amount I can buy a 2nd hand Nissan Leaf.

I've searched a lot, but what are currently the options to use an EV as house battery? Is that possible, is that supported, any warranty issues?

So my plan would be to commute with the EV, and when I come home and the power is down, use the EV as backup, being charged by the solar panels.

The 2019 NZ new Leaf will, apparently, support vehicle-to-grid, but none of the second-hand Japanese imports will.

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kingdragonfly

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#2236731 14-May-2019 15:26

I've searched a lot, but what are currently the options to use an EV as house battery?

So the quick answer, no.

Anything that puts power back into your home, also puts it back into the lines. If a power worker is fixing the lines, you could accidentally electrocute them. You're required by law to put in a device to prevent this: called "anti-islanding"

Another common problem is so-called grid tied systems, that use power coming in to synchronize the wave-form. You need a second inventor that can make a wave-form, like an off-grid system

And last but not least, your EV has to built to allow you to pull power from it: Vehicle-to-grid or "v2g"

Islanding
https://en.wikipedia.org/wiki/Islanding

Grid-tied
https://en.wikipedia.org/wiki/Grid-tied_electrical_system

Vehicle-to-grid
https://en.wikipedia.org/wiki/Vehicle-to-grid

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boland

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#2236733 14-May-2019 15:36

Thanks! Makes sense. Will wait a bit then.

What about incentives from the government? I found info about the Low Emission Fund but that seems to aim at businesses. Are there any plans to subsidize ev's or solar batteries; besides the existing free road user charges for EV's? Seems like not a lot is done by the government in that area.

wellygary

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#2236737 14-May-2019 15:42

boland:

Thanks! Makes sense. Will wait a bit then.

What about incentives from the government? I found info about the Low Emission Fund but that seems to aim at businesses. Are there any plans to subsidize ev's or solar batteries; besides the existing free road user charges for EV's? Seems like not a lot is done by the government in that area.

Pull up a pew, your table is not quite ready yet, so would you please take a seat at the Bar......

That questions has been bashed around numerous times over the last 157 pages of this thread...

In short, other than the RUC there is no government EV incentives,

(although this government has continually promised "something" will be happening "soon"....

jonathan18

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#2236744 14-May-2019 15:53

wellygary:

boland:

What about incentives from the government? I found info about the Low Emission Fund but that seems to aim at businesses. Are there any plans to subsidize ev's or solar batteries; besides the existing free road user charges for EV's? Seems like not a lot is done by the government in that area.

That questions has been bashed around numerous times over the last 157 pages of this thread...

... as well as on a 28-page thread that's specifically on govt incentives for EVs - https://www.geekzone.co.nz/forums.asp?forumid=162&topicid=240755

Rikkitic

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#2236747 14-May-2019 16:07

Just out of sheer curiosity, and no, I have no intention of doing such a thing, is there any actual practical objection (as opposed to legal, or sensible) to flicking the main switch off at the board, and just plugging a generator or inverted solar supply with full sine wave output into any convenient power point and using that to distribute power to the house. Of course you wold have to be careful not to overload the source, but would there be any other problem with doing this?

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tripper1000

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#2236766 14-May-2019 16:37

boland:

Hi I am new to this topic. I've read a lot of posts in this thread, very useful.

Currently I've got solar panels at home, and looking at adding batteries. Main reason is to have power during an outage.

However, a PW2 costs roughly $18k. For that amount I can buy a 2nd hand Nissan Leaf.

I've searched a lot, but what are currently the options to use an EV as house battery? Is that possible, is that supported, any warranty issues?

So my plan would be to commute with the EV, and when I come home and the power is down, use the EV as backup, being charged by the solar panels.

You can use a Nissan Leaf to power an inverter to run essential appliances in your house in an emergency. Just google it. I have tried (for fun) and it worked. With the ignition on it charges it's 12v battery from the traction batteries at a rate of 1kW, which is fairly respectable and plenty to run lights and fridges (but not stoves or microwaves).

NZ has a lot of grid level storage already (aka hydro dams) so the economic situation that warrants V2G overseas doesn't exist in NZ, and it isn't likely to be very popular here. Once the car wrecker yards are full of EV's instead of ICE then solar-to-battery is likely to be a lot more affordable but that time is a decade or more away.

One of the reasons a replacement 2nd hand battery for EV's is hard to get is because the battery packs are eagerly snapped up by the off-grid folk. I know of cases where off-grid folk have imported Leafs and immediately scrapped them for the battery pack - it is simply the cheapest way to buy 10kw plus sized battery at the moment. Given your question I suspect you have already figured this out, but have had 2nd thoughts about scrapping a perfectly good car. 😄

IMO if your are on grid, then you will save more money driving the EV and saving petrol, than scrapping the EV for its battery and storing and using your own electricity. Our (relatively) cheap electricity and expensive petrol means if you have $10-18k to drop on the situation, for most working/commuting people it makes more sense to use grid electricity and save petrol than save electricity and use petrol.

Put EV (or any other environmental) incentive out of your mind. The average voting Kiwi's miserliness prevent them from putting any substance behind their empty environmental rhetoric.

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#2236791 14-May-2019 17:18

Rikkitic:
Just out of sheer curiosity, and no, I have no intention of doing such a thing, is there any actual practical objection (as opposed to legal, or sensible) to flicking the main switch off at the board, and just plugging a generator or inverted solar supply with full sine wave output into any convenient power point and using that to distribute power to the house. Of course you wold have to be careful not to overload the source, but would there be any other problem with doing this?

You would need to make a suicide power lead for a start (male plugs on both ends of a cable). You wont be able to run any controlled loads, or loads on different phases. Depending on how your switchboard is wired, the main switch might be upstream of the meter. And the smart meter will be able to detect power being applied to its load terminals. It will then inform the power company. If you use a non isolated inverter or center tapped generator. The batteries or generator frame might become live. The circuit that you plug into might get overloaded, as the switchboard fuses are not at the source of supply anymore.

Lots of things that could go wrong. When the solution (assuming that you dont want to pay for a proper generator inlet to be installed). Is just use extension cords to directly supply power to your devices. Use some plug in lights for lighting if needed.

boland

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#2236821 14-May-2019 18:45

tripper1000:

boland:

Hi I am new to this topic. I've read a lot of posts in this thread, very useful.

Currently I've got solar panels at home, and looking at adding batteries. Main reason is to have power during an outage.

However, a PW2 costs roughly $18k. For that amount I can buy a 2nd hand Nissan Leaf.

I've searched a lot, but what are currently the options to use an EV as house battery? Is that possible, is that supported, any warranty issues?

So my plan would be to commute with the EV, and when I come home and the power is down, use the EV as backup, being charged by the solar panels.

You can use a Nissan Leaf to power an inverter to run essential appliances in your house in an emergency. Just google it. I have tried (for fun) and it worked. With the ignition on it charges it's 12v battery from the traction batteries at a rate of 1kW, which is fairly respectable and plenty to run lights and fridges (but not stoves or microwaves).

Thanks @tripper1000 . I won't be able to charge the EV from my solar panels during an outage, right? As the system shuts down during an outage to not kill the people working on the grid. Is there any workaround that?

As my goal is to still have power during an outage for extended periods of time.

Rikkitic

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#2236827 14-May-2019 19:06

Aredwood:
Rikkitic:

Just out of sheer curiosity, and no, I have no intention of doing such a thing, is there any actual practical objection (as opposed to legal, or sensible) to flicking the main switch off at the board, and just plugging a generator or inverted solar supply with full sine wave output into any convenient power point and using that to distribute power to the house. Of course you wold have to be careful not to overload the source, but would there be any other problem with doing this?

You would need to make a suicide power lead for a start (male plugs on both ends of a cable). You wont be able to run any controlled loads, or loads on different phases. Depending on how your switchboard is wired, the main switch might be upstream of the meter. And the smart meter will be able to detect power being applied to its load terminals. It will then inform the power company. If you use a non isolated inverter or center tapped generator. The batteries or generator frame might become live. The circuit that you plug into might get overloaded, as the switchboard fuses are not at the source of supply anymore.

Lots of things that could go wrong. When the solution (assuming that you dont want to pay for a proper generator inlet to be installed). Is just use extension cords to directly supply power to your devices. Use some plug in lights for lighting if needed.

It is just a thought experiment. I have no need, desire or intention to do such a thing. Our house, wiring, switchboard, etc., are all from the year nul. Neutral = earth and the wiring is conduit. The meter might have been 'smart' in 1920. Cutting the main switch cuts everything. If I used the two-plug configuration, it would still be fused at 15 amps on any other circuit, just not the same one.

Plesse igmore amd axxept applogies in adbance fir anu typos

kingdragonfly

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#2236833 14-May-2019 19:15

There's a reason why Tesla sells an EV and a completely independent "powerwall" (basically batteries to keep your home running).

They'll do the house wiring so you can safely use your solar panels in an emergency.

See this thread

https://www.geekzone.co.nz/forums.asp?forumid=73&topicid=225973

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