Bi-directional EV and charger
Discussion
No, so not very helpful, but I noticed my new-to-me Enyaq has V2H. Just found an 'hours supplied' counter in one of the menus when I was having a rummage around.
I'm interested to learn from others though and would consider getting an appropriate charger when one of our existing basic ones gives up the ghost.
I'm interested to learn from others though and would consider getting an appropriate charger when one of our existing basic ones gives up the ghost.
I believe Wall box Quasar IIs or similar devices with built in inverters re required for an EV to power a home. At £4k plus fitting, you're going to be hard pushed to truly justify it financially.
In a few years' time, such equipment will be cheaper, and connected to home battery/solar systems.
In a few years' time, such equipment will be cheaper, and connected to home battery/solar systems.
Europa Jon said:
I believe Wall box Quasar IIs or similar devices with built in inverters re required for an EV to power a home. At £4k plus fitting, you're going to be hard pushed to truly justify it financially.
In a few years' time, such equipment will be cheaper, and connected to home battery/solar systems.
it's all a bit 'early adopter' at best at the moment, but was hoping someone on here might have been part of a pilot.In a few years' time, such equipment will be cheaper, and connected to home battery/solar systems.
I'm not really sure why most would, I think the idea of this is a bit of a dead end, unless you have Solar etc.
It really isn't as simple as people think, and quite a few of the systems wouldn't work if the grid goes down anyway, which makes the biggest selling point for me totally pointless.
It really isn't as simple as people think, and quite a few of the systems wouldn't work if the grid goes down anyway, which makes the biggest selling point for me totally pointless.
I am very interested in the idea of this. We have solar and powerwall2 with IOG tariff so battery charges up on cheap rate overnight and powers the house during the day. However on a dull winter weekend day with the wife and kids running every appliance they can full whack (or so it seems) the powerwall has run out by early afternoon and we have to pay top rate.
We do have an ioniq 5 which can do v2l and v2h and it would be great to be able to have that act like the powerwall, charging at night and helping power the house during the day.
Issue is no one seems to sell a suitable charger in UK, and when ones were available they were the £4k+ mentioned, which totally blows the economics (even with degree level man-mathdls).
We do have an ioniq 5 which can do v2l and v2h and it would be great to be able to have that act like the powerwall, charging at night and helping power the house during the day.
Issue is no one seems to sell a suitable charger in UK, and when ones were available they were the £4k+ mentioned, which totally blows the economics (even with degree level man-mathdls).
TheRainMaker said:
I'm not really sure why most would, I think the idea of this is a bit of a dead end, unless you have Solar etc.
It really isn't as simple as people think, and quite a few of the systems wouldn't work if the grid goes down anyway, which makes the biggest selling point for me totally pointless.
don't agree with that. the thought of being able to use off peak rate power from IOG or similar for almost all of our energy intensive processes in the house is very appealing.It really isn't as simple as people think, and quite a few of the systems wouldn't work if the grid goes down anyway, which makes the biggest selling point for me totally pointless.
anyway, didn't really start the thread for the usual PH debate/ slanging match (inevitable
)tamore said:
TheRainMaker said:
I'm not really sure why most would, I think the idea of this is a bit of a dead end, unless you have Solar etc.
It really isn't as simple as people think, and quite a few of the systems wouldn't work if the grid goes down anyway, which makes the biggest selling point for me totally pointless.
don't agree with that. the thought of being able to use off peak rate power from IOG or similar for almost all of our energy intensive processes in the house is very appealing.It really isn't as simple as people think, and quite a few of the systems wouldn't work if the grid goes down anyway, which makes the biggest selling point for me totally pointless.
anyway, didn't really start the thread for the usual PH debate/ slanging match (inevitable
)You need to do a lot of research, as most cars that say they can do V2H or V2G can only run AC and are mostly limited to a few kW of load, which is no go in the real world, plus most will switch off in a power cut.
I was only replying to the fact that no one had replied to you and giving you a reason why
TheRainMaker said:
tamore said:
TheRainMaker said:
I'm not really sure why most would, I think the idea of this is a bit of a dead end, unless you have Solar etc.
It really isn't as simple as people think, and quite a few of the systems wouldn't work if the grid goes down anyway, which makes the biggest selling point for me totally pointless.
don't agree with that. the thought of being able to use off peak rate power from IOG or similar for almost all of our energy intensive processes in the house is very appealing.It really isn't as simple as people think, and quite a few of the systems wouldn't work if the grid goes down anyway, which makes the biggest selling point for me totally pointless.
anyway, didn't really start the thread for the usual PH debate/ slanging match (inevitable
)You need to do a lot of research, as most cars that say they can do V2H or V2G can only run AC and are mostly limited to a few kW of load, which is no go in the real world, plus most will switch off in a power cut.
I was only replying to the fact that no one had replied to you and giving you a reason why
and i'm well up to speed on what's technically being touted via v2x, hence me asking for practical experience anecdotes.
Am in a similar boat OP and have got a quote for a solar setup to include a bi-directional charger from Sig Energy. I really want to do V2H but I want to be fully convinced first that my new-to-me 2017 Tesla Model S can do the job with it. I am open to tweaking my Tesla and I understand that some have done it abroad. The quote for the Sig charger is about £5k on top of the rest of the intallation.
My car can do V2L, and I think V2H. 80KWh battery sitting there doing nothing most of the time.
V2L proved to be worthwhile during January's storm, with 4 days of power cuts.
V2H would be good if the maths worked, but I'm not sure it does right now. I had a 12KWh battery and 5KWh hybrid inverter fitted a month ago, cost £3500. Big enough to run the house all day in the summer. Extra 12KWh battery modules are around £2.2k, and proper switchover kit for power cuts would be around a grand (I just went for a double 13A socket at no cost).
So, for just over £5k I could upgrade the house battery to run all day, and have full EPS. Payback time would be about 8 years though.
Spending the same might get me a bidirectional car charger with EPS, but it would only work while the car was at home, and I'd be concerned about the extra cycles on the battery. House batteries tend to have very long warranties.
To me, it makes more sense to get a decent house battery, and use the car V2L for emergencies
V2L proved to be worthwhile during January's storm, with 4 days of power cuts.
V2H would be good if the maths worked, but I'm not sure it does right now. I had a 12KWh battery and 5KWh hybrid inverter fitted a month ago, cost £3500. Big enough to run the house all day in the summer. Extra 12KWh battery modules are around £2.2k, and proper switchover kit for power cuts would be around a grand (I just went for a double 13A socket at no cost).
So, for just over £5k I could upgrade the house battery to run all day, and have full EPS. Payback time would be about 8 years though.
Spending the same might get me a bidirectional car charger with EPS, but it would only work while the car was at home, and I'd be concerned about the extra cycles on the battery. House batteries tend to have very long warranties.
To me, it makes more sense to get a decent house battery, and use the car V2L for emergencies
Standby power from a house battery is easy, just get the Tesla powerwall. The only extra you may need is an earth spike. Making the car look like an extra house battery to that sort of set up would appear to be easy but requires everything to be designed and made in a way that allows it to be compatible. Cyclic degradation of modern EV batteries is negligible particularly at the relatively low discharge rates the home will need
TheRainMaker said:
You still need the backup gateway, as far as I know, with the Tesla Power Wall.
You 100% need an earth rod as the system will completely disconnect from the grid, and will also cut the earth.
Not sure I want to spend the money on a Tesla power wall when you can a 5kWh battery for under £2k. The consumer unit is more of a consideration and some bidirectional breakers would be need, You 100% need an earth rod as the system will completely disconnect from the grid, and will also cut the earth.
Regard an earth rod, there is simply to many site specific considerations to make such a generalization. A proper sparky would need to consider all the factors for your specific installation.
V2L make little sense really now that batteries are so affordable and may well attract a grant too.
ashenfie said:
Regard an earth rod, there is simply to many site specific considerations to make such a generalization. A proper sparky would need to consider all the factors for your specific installation.
There are no considerations; you must have an earth rod fitted to both the Sigenergy gateway (which we have) and the Tesla gateway.TheRainMaker said:
ashenfie said:
Regard an earth rod, there is simply to many site specific considerations to make such a generalization. A proper sparky would need to consider all the factors for your specific installation.
There are no considerations; you must have an earth rod fitted to both the Sigenergy gateway (which we have) and the Tesla gateway.Gassing Station | EV and Alternative Fuels | Top of Page | What's New | My Stuff