Cost per kWh

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Stinsy
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Cost per kWh

#1

Post by Stinsy »

Good value for money?


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12x 340W JA Solar panels (4.08kWp)
3x 380W JA Solar panels (1.14kWp)
5x 2.4kWh Pylontech batteries (12kWh)
LuxPower inverter/charger

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AGT
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Re: Cost per kWh

#2

Post by AGT »

Good deal but too many miles for a 4 year car for me
AE-NMidlands
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Re: Cost per kWh

#3

Post by AE-NMidlands »

AGT wrote: Mon Nov 13, 2023 9:16 pm Good deal but too many miles for a 4 year car for me
and probably a horrendous insurance bill too. Expensive for an extra battery!
(Does an EV actually have to be taxed and on the road, i.e. in use, to get Octopus go tarrifs etc., or can you just use it as extra battery reserve?)
2.0 kW/4.62 MWh pa in Ripples, 4.5 kWp W-facing pv, 9.5 kWh batt
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Joeboy
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Re: Cost per kWh

#4

Post by Joeboy »

AE-NMidlands wrote: Mon Nov 13, 2023 10:07 pm
AGT wrote: Mon Nov 13, 2023 9:16 pm Good deal but too many miles for a 4 year car for me
and probably a horrendous insurance bill too. Expensive for an extra battery!
(Does an EV actually have to be taxed and on the road, i.e. in use, to get Octopus go tarrifs etc., or can you just use it as extra battery reserve?)
No reason why a cheap EV could not be used for that purpose. I'd suggest that it would come down.to the mechanics of getting the power off the vehicle and into the home for practicality.
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Stinsy
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Re: Cost per kWh

#5

Post by Stinsy »

Joeboy wrote: Tue Nov 14, 2023 7:40 am
AE-NMidlands wrote: Mon Nov 13, 2023 10:07 pm
AGT wrote: Mon Nov 13, 2023 9:16 pm Good deal but too many miles for a 4 year car for me
and probably a horrendous insurance bill too. Expensive for an extra battery!
(Does an EV actually have to be taxed and on the road, i.e. in use, to get Octopus go tarrifs etc., or can you just use it as extra battery reserve?)
No reason why a cheap EV could not be used for that purpose. I'd suggest that it would come down.to the mechanics of getting the power off the vehicle and into the home for practicality.
I'd remove the pack and break it down into modules. They are 3P4S modules so you can easily arrange them into a 54V 15S arrangement.

You can sell the rest of the car sans-battery for decent money to a breaker!
12x 340W JA Solar panels (4.08kWp)
3x 380W JA Solar panels (1.14kWp)
5x 2.4kWh Pylontech batteries (12kWh)
LuxPower inverter/charger

(Artist formally known as ******, well it should be obvious enough to those for whom such things are important.)
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Joeboy
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Re: Cost per kWh

#6

Post by Joeboy »

Stinsy wrote: Tue Nov 14, 2023 8:25 am
Joeboy wrote: Tue Nov 14, 2023 7:40 am
AE-NMidlands wrote: Mon Nov 13, 2023 10:07 pm
and probably a horrendous insurance bill too. Expensive for an extra battery!
(Does an EV actually have to be taxed and on the road, i.e. in use, to get Octopus go tarrifs etc., or can you just use it as extra battery reserve?)
No reason why a cheap EV could not be used for that purpose. I'd suggest that it would come down.to the mechanics of getting the power off the vehicle and into the home for practicality.
I'd remove the pack and break it down into modules. They are 3P4S modules so you can easily arrange them into a 54V 15S arrangement.

You can sell the rest of the car sans-battery for decent money to a breaker!
Would that not stop in tracks the advantage of the IO/GO tariff?
15kW PV SE, VI, HM, EN
42kWh LFPO4 storage
7kW ASHP
200ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
WBSx2
Low energy bulbs
Veg patches & fruit trees
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Stinsy
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Re: Cost per kWh

#7

Post by Stinsy »

Joeboy wrote: Tue Nov 14, 2023 8:34 am
Stinsy wrote: Tue Nov 14, 2023 8:25 am
Joeboy wrote: Tue Nov 14, 2023 7:40 am
No reason why a cheap EV could not be used for that purpose. I'd suggest that it would come down.to the mechanics of getting the power off the vehicle and into the home for practicality.
I'd remove the pack and break it down into modules. They are 3P4S modules so you can easily arrange them into a 54V 15S arrangement.

You can sell the rest of the car sans-battery for decent money to a breaker!
Would that not stop in tracks the advantage of the IO/GO tariff?
Sure. But I was thinking purely about the cheap battery...
12x 340W JA Solar panels (4.08kWp)
3x 380W JA Solar panels (1.14kWp)
5x 2.4kWh Pylontech batteries (12kWh)
LuxPower inverter/charger

(Artist formally known as ******, well it should be obvious enough to those for whom such things are important.)
HML
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Re: Cost per kWh

#8

Post by HML »

AE-NMidlands wrote: Mon Nov 13, 2023 10:07 pm (Does an EV actually have to be taxed and on the road, i.e. in use, to get Octopus go tarrifs etc., or can you just use it as extra battery reserve?)
Probably not, but it does have to be an Octopus approved type of car. My Hyundai Ioniq Electric is not on the approved list despite being about the most efficient EV you could get.
SimonSays
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Re: Cost per kWh

#9

Post by SimonSays »

That's a lot of car for the money.
We're three months into I Pace ownership. Fabulous thing to drive but build quality is slightly questionable. Ours is going to the dealer shortly to fix a couple of rattles, squeaky boot hatch and a charge flap that's become mis-aligned.
Jaguar have a lot of work backlogged.
Drives so much better than our previous car - Volvo XC40 - but the build quality on that was completely on point. Six of one, half a dozen of the other.
(and yes, I realise you may want it for the battery, but be aware that there are duff cells in early I Paces)
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John_S
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Re: Cost per kWh

#10

Post by John_S »

One thing that is not really considered when repurposing car batteries as house batteries is the fire risk of different types of lithium batteries in cars.

Most car batteries are lithium-ion as it has a high energy density (kWh per Kg). Most home batteries are lithium iron phosphate (LiFePO4) which has a much lower fire risk, as it does not suffer from thermal runaway.

I appreciate that the term lithium battery includes many battery chemistries and it is not always obvious which is used.
Last edited by John_S on Tue Nov 14, 2023 3:36 pm, edited 1 time in total.
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