EV cars - real world range
Discussion
Carparticus said:
That's assuming day time charging of around £0.15 / KwH, and therefore about 3.75p/mile.
Most EVs get topped up at night using off-peak leccy costing around £0.06 / KwH, which means the cost is probably nearer 1.5p / mile.
To put that into perspective:- £6.50 buys a gallon of petrol giving around 20-40 miles in an ICE car .. or it can buy 430 miles worth of electricity.
Then there's the concept of charging for free for 25 yrs with solar from an off-grid property, as opposed to on-grid solar with FITS payments which effectively pays you 5p/mile to drive, but rubs up the anti-everything brigade !!
Do that many people have dual meters? Most EVs get topped up at night using off-peak leccy costing around £0.06 / KwH, which means the cost is probably nearer 1.5p / mile.
To put that into perspective:- £6.50 buys a gallon of petrol giving around 20-40 miles in an ICE car .. or it can buy 430 miles worth of electricity.
Then there's the concept of charging for free for 25 yrs with solar from an off-grid property, as opposed to on-grid solar with FITS payments which effectively pays you 5p/mile to drive, but rubs up the anti-everything brigade !!
Edited by Carparticus on Friday 4th April 12:10
Welshbeef said:
Do that many people have dual meters?
Good question - I have no idea what the split is! Googling reveals that providers will often swap the meter to dual along with the radio-teleswitch/timer for free, amazingly. Although some sources quote up to £50. But thats a fraction of the savings to be had, and a no brainer for EV owners.
http://www.moneysavingexpert.com/utilities/economy...
Carparticus said:
Then there's the concept of charging for free for 25 yrs with solar from an off-grid property,
er, it's not free!(divide the cost of the solar installation (and upkeep/repair/upgrade etc) by the total miles done on the power it generates over that 25 year life span. That is not a "zero")
(it's relatively low cost when averaged over 25 years, but the first year is pretty dam expensive!)
i heard of an upcoming public event the other day that should prove very informative about 'real world' possibilities for an ev vehicle, i'm not that into EVs tbh but this event sounds bloody brilliant, will post something up over the coming weeks once its announced (if its not already on here by then 
)
)Max_Torque said:
Carparticus said:
Then there's the concept of charging for free for 25 yrs with solar from an off-grid property,
er, it's not free!(divide the cost of the solar installation (and upkeep/repair/upgrade etc) by the total miles done on the power it generates over that 25 year life span. That is not a "zero")
(it's relatively low cost when averaged over 25 years, but the first year is pretty dam expensive!)
ks). I used to spend £5k on petrol per year, £3k on leccy, another £3k on heating oil and a couple more on maintenance, £14k PA and that's after paying income tax and the rest.. Put that into a spread sheet, extrapolate it for 25 yrs as you say, and even at lowly fuel inflation figure of just 5% the amount of money I would need source just to continue paying the bills is positively epic at over £500k !!! What I've been doing is also extendable at any time, IE, I can add, say, another 2kw of 2nd hand PV for 20p/watt (seriously!) and it does not need to match what's already in place. The payback period is remarkably short like 2 yrs or so, and the ROI is calculated through almost complete elimination of the bills mentioned rather than some pittance of a payment under FITS. Its not for everyone, but I kinda like it I also suspect that energy cost inflation over the next 5 years will be considerably more than 5% PA...
Carparticus said:
err, I was alluding to something not-normal ! This forum is not the place for me to explain in detail quite what I am talking about, but essentially I'm involved with developing 'out-there' energy harvesting and storage solutions that are completely outside of any MCS / FITs schemes (that always leads to consumer price inflation of 200/300/400% all in the name of bureaucracy, and lots of other health n safety bks). I used to spend £5k on petrol per year, £3k on leccy, another £3k on heating oil and a couple more on maintenance, £14k PA and that's after paying income tax and the rest.. Put that into a spread sheet, extrapolate it for 25 yrs as you say, and even at lowly fuel inflation figure of just 5% the amount of money I would need source just to continue paying the bills is positively epic at over £500k !!! What I've been doing is also extendable at any time, IE, I can add, say, another 2kw of 2nd hand PV for 20p/watt (seriously!) and it does not need to match what's already in place. The payback period is remarkably short like 2 yrs or so, and the ROI is calculated through almost complete elimination of the bills mentioned rather than some pittance of a payment under FITS. Its not for everyone, but I kinda like it
I also suspect that energy cost inflation over the next 5 years will be considerably more than 5% PA...
Well speaking as one who is in a similar boat, I'm extremely interested in anything you have to say on the subject. Particularly energy harvesting and storage. I'm going small scale solar in the next few weeks purely to offset increased electricity import ahead of the i3's arrival. This is just a small first step for me.ks). I used to spend £5k on petrol per year, £3k on leccy, another £3k on heating oil and a couple more on maintenance, £14k PA and that's after paying income tax and the rest.. Put that into a spread sheet, extrapolate it for 25 yrs as you say, and even at lowly fuel inflation figure of just 5% the amount of money I would need source just to continue paying the bills is positively epic at over £500k !!! What I've been doing is also extendable at any time, IE, I can add, say, another 2kw of 2nd hand PV for 20p/watt (seriously!) and it does not need to match what's already in place. The payback period is remarkably short like 2 yrs or so, and the ROI is calculated through almost complete elimination of the bills mentioned rather than some pittance of a payment under FITS. Its not for everyone, but I kinda like it I also suspect that energy cost inflation over the next 5 years will be considerably more than 5% PA...
Carparticus said:
err, I was alluding to something not-normal ! This forum is not the place for me to explain in detail quite what I am talking about, but essentially I'm involved with developing 'out-there' energy harvesting and storage solutions that are completely outside of any MCS / FITs schemes (that always leads to consumer price inflation of 200/300/400% all in the name of bureaucracy, and lots of other health n safety bks). I used to spend £5k on petrol per year, £3k on leccy, another £3k on heating oil and a couple more on maintenance, £14k PA and that's after paying income tax and the rest.. Put that into a spread sheet, extrapolate it for 25 yrs as you say, and even at lowly fuel inflation figure of just 5% the amount of money I would need source just to continue paying the bills is positively epic at over £500k !!! What I've been doing is also extendable at any time, IE, I can add, say, another 2kw of 2nd hand PV for 20p/watt (seriously!) and it does not need to match what's already in place. The payback period is remarkably short like 2 yrs or so, and the ROI is calculated through almost complete elimination of the bills mentioned rather than some pittance of a payment under FITS. Its not for everyone, but I kinda like it
I also suspect that energy cost inflation over the next 5 years will be considerably more than 5% PA...
Problem with solar is that the yield is utterly pathetic in the winter. Our solar installation peaks at 4 kW on a sunny day in the summer, and can easily generate 15 kWh in a day. In winter? On many days we are lucky to get 0.5 kWh, which would barely run the lights in the house. As I've said on another thread, ours is now (early March) just able to get a tank of hot water warm enough for a decent shower, as it dumps all the surplus generation into the immersion. By April, it will probably do a bath, and by May it will have surplus. ks). I used to spend £5k on petrol per year, £3k on leccy, another £3k on heating oil and a couple more on maintenance, £14k PA and that's after paying income tax and the rest.. Put that into a spread sheet, extrapolate it for 25 yrs as you say, and even at lowly fuel inflation figure of just 5% the amount of money I would need source just to continue paying the bills is positively epic at over £500k !!! What I've been doing is also extendable at any time, IE, I can add, say, another 2kw of 2nd hand PV for 20p/watt (seriously!) and it does not need to match what's already in place. The payback period is remarkably short like 2 yrs or so, and the ROI is calculated through almost complete elimination of the bills mentioned rather than some pittance of a payment under FITS. Its not for everyone, but I kinda like it I also suspect that energy cost inflation over the next 5 years will be considerably more than 5% PA...
At a guess to go "off grid" in the UK, you'd need 30 kW of installed solar, and some fecking huge batteries to keep you going in the winter.
Tesla Model S - 90D
A full charge shows 280 miles of range, with four people and luggage at motorway speeds I'd make 250 but would plan to charge at 200.
Temperature makes a big difference to the first 20 miles or so, on a cold morning the first 20 miles could use 40 miles of range. From there it goes back to normal but a week of cold starts and short journeys would use most of the battery up.
A full charge shows 280 miles of range, with four people and luggage at motorway speeds I'd make 250 but would plan to charge at 200.
Temperature makes a big difference to the first 20 miles or so, on a cold morning the first 20 miles could use 40 miles of range. From there it goes back to normal but a week of cold starts and short journeys would use most of the battery up.
JPJPJP said:
Tomorrow I will be attempting 107 miles in the i3 94aH
Will be setting off pre conditioned for the first half, but not the return leg
It is boasting 134 miles range on the screen just now... let's see what a few fast A road miles does to that!
Last summer, I got well over 120 miles no problem.Will be setting off pre conditioned for the first half, but not the return leg
It is boasting 134 miles range on the screen just now... let's see what a few fast A road miles does to that!
I got 100 out my 60aH Bev once!
JPJPJP said:
Tomorrow I will be attempting 107 miles in the i3 94aH
Will be setting off pre conditioned for the first half, but not the return leg
It is boasting 134 miles range on the screen just now... let's see what a few fast A road miles does to that!
I got 95 when I test drove one last winter. That was in a light snowstorm and with a heavy right foot.Will be setting off pre conditioned for the first half, but not the return leg
It is boasting 134 miles range on the screen just now... let's see what a few fast A road miles does to that!
I would bet with good weather and an eye on efficiency 107 should be a doddle.
Clem2k3 said:
I got 95 when I test drove one last winter. That was in a light snowstorm and with a heavy right foot.
I would bet with good weather and an eye on efficiency 107 should be a doddle.
Made it. But with only 3 miles left! The colder weather and the 70mph motorway speeds took more of a toll on the range than the car expected on the way back. It was 3 degrees for at least half the return leg.I would bet with good weather and an eye on efficiency 107 should be a doddle.
If I do the trip again I will go for eco pro + a bit on the way out to preserve a bit more battery for the return trip. The preheat (or lack of it) makes a significant difference when its cold
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