EV (electric vehicle) News and Discussion

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

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#2946660 26-Jul-2022 17:32

tims:

Looking at the NZTA website it seems that the most public chargers charge around 25c per kWh (if I've read it right).

I'm not sure how this compares to charging at home as there are other charges (line fees, daily charges etc) in the power bill. Would it be fair to say that the 25c per kWh is comparable to the average peak time rate that power company's charge across NZ or are there too many variables to work this out?

plus 25c/min (certainly the Chargenet ones). So at a supply rate of about 50kW that’s more like 50c per kWh.

Plus the daily charge/line fee you are paying whether you have an EV or not.

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HarmLessSolutions

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#2946667 26-Jul-2022 17:41

Apart from Chargenet there is also a nationwide network of publicly available chargers in the Openloop platform. Rates are similar to those of Chargenet's but you need the Openloop app to view them (or Plugshare) and a preload balance to pay for them.

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

everettpsycho

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#2946674 26-Jul-2022 17:55

Also worth remembering quite a few retailers offer good off peak rates for ev owners so if you charge at night it make it much cheaper to own. Our night rate is a third of the day rates meaning a recharge only costs us $2 instead of $6. The same charge on chargenet fast chargers is more like $9, but the only one we use semi often is the free one nearby if it happens to be available when we go shopping and we are low on charge.

tims

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#2946678 26-Jul-2022 18:15

Thanks for your replies. I've also found an article from last year that explains it well:

https://www.driven.co.nz/news/electric-vehicle-versus-petrol-power-is-a-bev-really-that-much-cheaper-to-run/

HarmLessSolutions

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#2946687 26-Jul-2022 18:42

everettpsycho: Also worth remembering quite a few retailers offer good off peak rates for ev owners so if you charge at night it make it much cheaper to own. Our night rate is a third of the day rates meaning a recharge only costs us $2 instead of $6. The same charge on chargenet fast chargers is more like $9, but the only one we use semi often is the free one nearby if it happens to be available when we go shopping and we are low on charge.

I'm interested in who is offering a 1/3 night rate (and where in NZ you are to get this). We can get an effective 2/3 advantage over peak power cost to charge our EVs but this is by using PV to do so as the 'lost opportunity' compared to exporting that generation. Our buy-back tariff for export with Ecotricity is 10.5c compared to 31.8c/kWh peak import.

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

everettpsycho

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#2946700 26-Jul-2022 19:38

HarmLessSolutions: I'm interested in who is offering a 1/3 night rate (and where in NZ you are to get this). We can get an effective 2/3 advantage over peak power cost to charge our EVs but this is by using PV to do so as the 'lost opportunity' compared to exporting that generation. Our buy-back tariff for export with Ecotricity is 10.5c compared to 31.8c/kWh peak import.

We are with meridian in greater Christchurch. The rates are over 29c day time and about 9.5c at night (9-7). The day time rates are a little higher than some other suppliers but the night time rates are low enough that we load up everything we can after 9.

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jarledb

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#2946730 26-Jul-2022 21:44

HarmLessSolutions:

Apart from Chargenet there is also a nationwide network of publicly available chargers in the Openloop platform. Rates are similar to those of Chargenet's but you need the Openloop app to view them (or Plugshare) and a preload balance to pay for them.

I downloaded the Openloop app but I can't see any charger further south on the north island than Ohakune and Napier. So not much help for us down in the Wellington area. Kinda strange..

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HarmLessSolutions

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#2946740 26-Jul-2022 22:11

jarledb:

HarmLessSolutions:

Apart from Chargenet there is also a nationwide network of publicly available chargers in the Openloop platform. Rates are similar to those of Chargenet's but you need the Openloop app to view them (or Plugshare) and a preload balance to pay for them.

I downloaded the Openloop app but I can't see any charger further south on the north island than Ohakune and Napier. So not much help for us down in the Wellington area. Kinda strange..

We haven't used their network as yet but it seems like they're still growing their network and are based on businesses who have existing chargers allowing Openloop 'members' access to them. The attraction for us is the 175kW charger at Ebbett Volkswagen in Hamilton which is well located for mid journey charging for us travelling NPL - AKL.

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

jonathan18

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#2946748 26-Jul-2022 22:29

There’s a relatively recent thread specifically on Open Loop chargers. In that a poster mentions a number of charging stations at Z stations have been taken over by Open Loop; this apparently includes the one on Vivian St, Wellington.

https://www.geekzone.co.nz/forums.asp?forumid=162&topicid=298685

HarmLessSolutions

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#2946750 26-Jul-2022 22:35

tims:

Thanks for your replies. I've also found an article from last year that explains it well:

https://www.driven.co.nz/news/electric-vehicle-versus-petrol-power-is-a-bev-really-that-much-cheaper-to-run/

A few details in that article that paint EVs in a poor light. The wall charger they mention "That could cost several thousand dollars" is very much on the high end with our particular 7kW Juicepoint costing us under $2,000 installed, and keep in mind that it will be a one off cost that won't need to be repeated with each additional EV. Also a 'caravan plug' will serve the purpose for most EV owners at least for the short term and cost a lot less.

I recently crunched the numbers based on our Polestar's stated energy efficiency and our supply prices from Ecotricity.

Peak rate applies for 7:00am - 11:00am and 5:00pm - 9:00pm weekdays. This is NZ$0.32/kWh.
Off-peak rate applyies at all other times including all weekend and is NZ$0.21/kWh
Buy back tariff is $0.105/kWh

Based on the Polestar2's stated consumption rate of 19kWh/km (31kWh/100miles) this calculates out at 6c/km at peak rates, 4c/km at off peak rate charge or 2c/km if charged from our PV based on lost opportunity on export.

In regard to RUCS presently light diesels pay 7.6c/km and when EVs are eventually collared with this tax it will more than likely be at a lower rate than the current diesel rate based on eco strategies aimed at climate change. I fully expect the whole RUC system to be rehashed in conjunction with EVs being pulled into the system. Most likely will be a distance based system similar to how diesels are currently charged for all road vehicles but with the addition of a GPS or similar monitored unit fitted to all vehicles to prevent fraud, which is rampant for diesels' speedo based current regime.

An RUC system such as that would not only curb fraud but also exclude all off road use such as power tools, dirt bikes and petrol marine engines which are currently paying RUC by way of that included in petrol. It would also be the only robust way to fairly tax hybrids which are currently getting a cheap deal by way of their partial electric motoring and can't be accurately taxed by way of fuel price - especially plug in hybrids.

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

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#2946780 27-Jul-2022 07:53

BEV definitely cheaper to run.

but it costs more to buy

https://www.stuff.co.nz/motoring/300643433/porsche-believes-it-can-make-more-profit-selling-electric-cars

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#2946820 27-Jul-2022 10:35

Batman:

BEV definitely cheaper to run.

but it costs more to buy

https://www.stuff.co.nz/motoring/300643433/porsche-believes-it-can-make-more-profit-selling-electric-cars

That cost differential is a temporary issue. Predictions are that declining battery cost (per kWH) will see price parity with ICE within the next few years. Once that occurs the decision to go EV will become a no brainer and the ICE percentage of the national fleet will decline rapidly.

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

Batman

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#2946824 27-Jul-2022 10:49

It depends.

If they can constrict supply to be lower than the demand they can dribble the EVs out they will easily keep the prices high.

I learnt that about land prices in NZ.

And as the whole world legislate to ban ICE, it's not hard to do.

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#2946825 27-Jul-2022 10:55

At the moment they don't really have to 'do' anything - demand is already outstripping supply, even though they are feverishly building factories left, right and centre.

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#2946904 27-Jul-2022 12:29

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