I'm trying to get a conversion between cost per kWH and per litre.

 

My rough calculations say the multply the cost per kWH by 2.34 and if petrol is more expensive per litre then charging is cheaper.

 

Anyone else tried to work out the ratio?

Count your petrol consumption as currency per 100km and do the same with electric?

 

 

If 13 kWh costs 23.4 pence a kWh then that is £3.04

 

If the 13 kWh of electric takes you 25 miles on just electric

then compare that to 2 litres of petrol @ 178 pence a litre taking you 25 miles.  that would be £3.56

(If you get 10 miles to a litre (45 mpg) then the 25 miles would be 2.5 litres x 178 pence a litre. = £4.45)

 

If you charge free at a public charger that is much cheapness.

A low night time / off peak tariff is much cheapness...

 

If your house tariff is 27.2 pence a kWh then you are at £3.53 for 25 miles. 

Edited 7 June, 20223 yr by roottoot

And then factor in the extra £.pp/mile of the initial purchase price or monthly lease cost.

 

Of  course, the tax benefit for company car drivers is a big plus for those lucky enough to be in that category and a complete rip off for the rest of us mere mortals (ooops, getting a bit political if I’m not careful…).

1 hour ago, sneal said:

And then factor in the extra £.pp/mile of the initial purchase price or monthly lease cost.

 

Irrelevant as we've had the car for a year now and usually charge at home, but with the world opening up we're going to be holidaying more.

Lots of various public charging to try tariffs then for going on a 7kW charging.  Cost to plug in,. £1 minimum charge that is a pita when a charger does not start and takes attempts.  Free, 16 pence, 23 or 30 pence but now 35pencs a kWh at park and rides and likely to increase is a bit much.  Still cheaper than petrol or diesel though. 

 

31 minutes ago, roottoot said:

Free, 16 pence, 23 or 30 pence but now 35pencs a kWh at park and rides and likely to increase is a bit much.  Still cheaper than petrol or diesel though. 

Dragon Charging are now a flat 65p per kWH

 

Edited 8 June, 20223 yr by Niamh
Typo

How busy are their chargers then?   Is that then giving free parking and not time limit on a charger or is there a penalty?    Edit. Ps.  Now looked at the Dragon Site.  So chargers in Wales.  Crazy pricing like Ionity.  

Edited 8 June, 20223 yr by roottoot

Ah but is the pricing cheaper or more expensive than petrol?

If 1 kWh of electric takes you 2.5 miles so 10 kWh takes you 25 miles and costs 10 x 69 pence, £6.90 then 50 mile would be £13.80.

 

A Petrol of Diesel that does 45-50 mpg or better is cheaper than running just on expensive electricity.

 

Maybe just run the car without charging so paying 69 pence a kWh. 

28 minutes ago, roottoot said:

If 1 kWh of electric takes you 2.5 miles so 10 kWh takes you 25 miles

But there's the point, how far does 1 kWH take you?  Zap map gives Real-world electricity use 16.2 kWh/100km

 

Which is 3.8 miles per kWH

 

32 minutes ago, roottoot said:

A Petrol of Diesel that does 45-50 mpg or better is cheaper than running just on expensive electricity.

 

But the comparison is not with some other vehicle but the iV itself running on petrol

@Niamh you mention holidaying more now the world is opening up a bit - it's great! I'm just back from a road-trip of 2500 miles to Tuscany over 3 1/2 weeks 😁

 

I was driving the 1.5TSi, if it were a 1.4TSi iV I'd probably have relied on energy recovery unless there was a low-cost/free charging facility, of which there seemed to be plenty except when out in the sticks. I guess a 130kph blast down the AutoRoute/AutoStrada would soon get through the battery range though.

BTW, my 1.5TSi averaged 59.2mpg, and petrol costs worked out at 12.8p/mile (yes, I am daft enough to work it all out in a spreadsheet 🙄)

@Niamh

You drive one, how far does a full battery take you if the engine is not firing up?  

 

If you get 3.8 miles per kWh from 13 kW battery then that is 49 miles you are getting.

 

?

If you go 100 miles starting with a full battery and a brimmed tank how many litres are needed to brim the tank again.?

 

........................

I drive a small but still heavy BEV and it has a 45 kW usable battery and i get generally 3 miles to a kWh,.  3 x 45 = 135 miles.

When i get 4 miles per kWh that is 180 miles.

Winter time doing 2 miles 6 times a day i might get 2 miles per kWh.

 

If i got 16.2 kWh / 100 km,  so the 3.8 miles per kWh from the 45 kW battery then that would be 171 miles. 

Edited 8 June, 20223 yr by roottoot