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A lesson leant charging at Porsche!

anonymouse

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25.09 kWh
£22.30
To pay that much (twice the price per kWh) shown in my chart above) you could have been charging very slowly eg from 70-l00%. Never a good idea on a charger with time-based pricing.

If i have the maths right, you spent 36 minutes to put just 25kW in. That is an average speed of 41kWh. However if you had had a warm battery and a lower state of charge you could have put 50kWh in in about 15 minutes. And paid half the price.

One of the big advantages of a per-minute element to the pricing is it helps new drivers learn about the charge curve of their battery, and deters them from clogging a charger up for long times. That is better for everyone.

if used appropriately the OPC prices are *not* the ripoff claimed in this thread.
 
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ColinTheBandit

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To pay that much (twice the price per kWh) shown in my chart above) you must have been charging very slowly eg from 70-l00%. Never a good idea on a charger with time-based pricing.

If i have the maths right, you spent 36 minutes to put just 25kW in. That is an average speed of 41kWh. However if you had had a warm battery and a lower state of charge you could have put 50kWh in in about 15 minutes. And paid half the price.

One of the big advantages of a per-minute element to the pricing is it helps new drivers learn about the charge curve of their battery, and deters them from clogging a charger up for long times. That is better for everyone.

if used appropriately the OPC prices are *not* the ripoff claimed in this thread.
I went to 86%!
on the way back I stopped at IONITY and it was a faction of the cost and more kWh.
I appreciate the details but I haven’t actually said they are a rip off, I wanted to point out to newbies like me not fall in to the same trap.
 

anonymouse

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on the way back I stopped at IONITY and it was a faction of the cost and more kWh.
yes, Ionity are deeply discounted. They are the first network of choice for most of us.
Sadly they are also the first network of choice for zillions of other marques, and at several UK Ionity stations there are severe queuing problems - eg Cobham (upgrade imminent), Gretna, `Milton Keynes. the queuing is exacerbated by the many drivers who are naive about charging curves and hog stalls for an hour while they go to 100%, and some drivers whose cars will not take a fast charge anyway (and thus should be at the often-adjacent 45kW aloernative).
 


cbst

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To pay that much (twice the price per kWh) shown in my chart above) you could have been charging very slowly eg from 70-l00%. Never a good idea on a charger with time-based pricing.

If i have the maths right, you spent 36 minutes to put just 25kW in. That is an average speed of 41kWh. However if you had had a warm battery and a lower state of charge you could have put 50kWh in in about 15 minutes. And paid half the price.

One of the big advantages of a per-minute element to the pricing is it helps new drivers learn about the charge curve of their battery, and deters them from clogging a charger up for long times. That is better for everyone.

if used appropriately the OPC prices are *not* the ripoff claimed in this thread.
I would beg to differ a little. I charged at Porsche Norwich as the nearby Ionity had a problem, it charged at around 120kWh rather than the claimed 350kW. I know Taycans top out at 270kW in ideal conditions but I felt a bit ripped off. I was in the ideal battery charging temperature range and was around 30% charge so the rate should have been a lot higher.

What is the incentive for Porsche to fix their slow charger when it makes them more money? It's only a few £ but doesn't make you feel good.
 

anonymouse

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What is the incentive for Porsche to fix their slow charger when it makes them more money? It's only a few £ but doesn't make you feel good.
yes I agree - the downside of the per-minute model is that the crappier the charger, the more it costs!
mind you, even at your 120kW speed you were still only paying 53p/kWh according to my spreadsheet, which is way better than Shell at 85!
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