Charging Leisure Batteries via EV points.

[Heppy]

I have an EV and are with EON.
25.3p daytime,
6.7p from midnight to 0700.

10p a mile.

 

[wildebus]

I have an EV and are with EON.
25.3p daytime,
6.7p from midnight to 0700.

10p a mile.

So you are paying a surcharge between 07:00 and midnight in order to get cheaper EV charging
To get the true figure per mile, see how much you pay between those hours, adjust the cost to see what it would be on a non-EV tariff and add that to the 10p a mile value

not saying it is not a good deal you are getting, but the cost per mile is being artificially lowered by getting a portion transferred onto the rest of the electrical useage in the house.
Just looked at EON ...
EV vs Non-EV Tariff: EV is 0.27p/kWh more Peak. very little difference (~1%) . Standing Charge is 8.66p per day more. So the EV recharging true charge is (Peak KWh useage * 0.27p + 8.66/Day) pence more.
(of course, other non-peak and non-EV use will be beneficial, so need to adjust for that the other way, so dishwasher and washing machine use maybe?)

 

[Heppy]

So you are paying a surcharge between 07:00 and midnight in order to get cheaper EV charging
To get the true figure per mile, see how much you pay between those hours, adjust the cost to see what it would be on a non-EV tariff and add that to the 10p a mile value

not saying it is not a good deal you are getting, but the cost per mile is being artificially lowered by getting a portion transferred onto the rest of the electrical useage in the house.
Just looked at EON ...
EV vs Non-EV Tariff: EV is 0.27p/kWh more Peak. very little difference (~1%) . Standing Charge is 8.66p per day more. So the EV recharging true charge is (Peak KWh useage * 0.27 + 8.66/Day) pence more.

I understand I could be paying more during the day but when I last did a comparison for my address it was only a penny or two more per Kw.
We use very little electric during the day in the home and have never charged the car during the day.

 

[wildebus]

I understand I could be paying more during the day but when I last did a comparison for my address it was only a penny or two more per Kw.
We use very little electric during the day in the home and have never charged the car during the day.

Yup. these tariffs can be very beneficial. It is really like a updated version of "Economy 7" people with Electric Storage Heaters used to go for

But using the off-peak rate to then quote how much it costs them to charge their car is just not the whole picture, but so many folk like to do that.
You could compare it to other common threads where people are so happy how they only paid 74p/Litre for LPG instead of 99p/litre, ignoring how they had to spend an extra fiver in diesel to drive to the cheaper LPG station

 

[Boris7]

So you are paying a surcharge between 07:00 and midnight in order to get cheaper EV charging
To get the true figure per mile, see how much you pay between those hours, adjust the cost to see what it would be on a non-EV tariff and add that to the 10p a mile value

not saying it is not a good deal you are getting, but the cost per mile is being artificially lowered by getting a portion transferred onto the rest of the electrical useage in the house.
Just looked at EON ...
EV vs Non-EV Tariff: EV is 0.27p/kWh more Peak. very little difference (~1%) . Standing Charge is 8.66p per day more. So the EV recharging true charge is (Peak KWh useage * 0.27p + 8.66/Day) pence more.
(of course, other non-peak and non-EV use will be beneficial, so need to adjust for that the other way, so dishwasher and washing machine use maybe?)

True BUT if you put you washing machine, dishwasher and anything else on a timer you get that rate for all of them, if you have house batteries you charge them, then run between 07:00 and midnight off the batteries, any solar just boosts the amount of cheap/free electricity. Even my MH when on the drive only gets EHU on the cheap EV rate.

 

[Geek]

Reading just some of this thread has left me bemused. Not by the issue of using EV charge points for motorhomes, but by the misuse of terms.
Firstly, amps and watts area measure of how fast the electricity is flowing, not how much has been transferred. So Kw, Amp and Watt are speed, similar to mph.
To measure quantity, you multiply the speed by the time, so it is expressed in Kilowatt hours (KWH) or amp hours (AH). For example, 50 amps for an hour is 50KWh. Like 50 miles is 50mph for an hour.
Secondly, voltages give different powers. A typical EV charger may do up 22KW (faster ones are more expensive and less suitable) which at 230v is about 95A. But if it were at 12v it would be 1,833A.
You may have a 70A charger for your battery bank, but that's 70A at 12v, which is only 840 watts, or 0.84KW. A 450Ah battery bank will take over four hours to go from 20% to 80% on that charger. Typically, you pay about 65p per KWh so it would cost less than £2.50.
That much energy as LPG would cost about 80p and fill in two minutes.

 

[wildebus]

That much energy as LPG would cost about 80p and fill in two minutes.

Exactly. And once you have filled up your LPG tank, you simply plug in your Laptop and TV into it and .... ummmm ....

 

[Geek]

If you use gas for cooking and heating, the batteries will easily cope with lighting and electronics.

 

[Boris7]

If you use gas for cooking and heating, the batteries will easily cope with lighting and electronics.

Absolutely correct, until you factor in SWMBO in my case.