EV tariff increases the daily tariff !

[BarryH]

The other thing to remember is the whole house runs at the lower rate, not just the EV charger so if you have appliances with delay timers e.g. washing machines, tumble dryers and dishwashers you can run those more cost effectively. Might even be cheaper to heat a water tank with a low rate immersion heater than gas (but that would need some spreadsheetery to confirm)

I now have a Heat Pump and heat my hot water using that at night which has a 250% efficiency for hot water and that at the 7p IOG rate. My heating also boosts and over heats the house (excluding the bedrooms) building up heat in the fabric of the house walls thereby reducing heating needed in the fist part of the day. BUT even before I had a heat pump and used Gas Central Heating, I moved every thing I could to the off peak hours and achieved 65% use off peak then I added a little bit of solar and a 10 kWh battery (9 kWh useable) and got to 98% off peak. Now I've a heat pump I back down to 65% in winter but 95%-98% for the bulk of the year. And for for a substantial part of the year I'm also exporting surplus Solar PV generated kWh. Even as late in the year as October my Octopus bill showed £40 export and £60 import so net the house is low cost to run. Sure I invested in Green Tech but under £10 over 2-3 years which is less than my car depreciated over the same period.

 

[Rolfe]

Your car API is linked to the app

Is it? How does that work?

 

[LenEV2016]

Is it? How does that work?

If you have a compatible car

Audi: All models
BMW: Most models (i-series)
Cupra: All models
Jaguar: Most models
Kia: All models
Porsche: All models
Renault: (post-Oct 2020),
Seat: All models
Skoda: All models
Tesla: All models
Volkswagen:

They share their API with octopus and it means they can link in with your car directly, it reads the cars state of charge.
Instead of picking a % to add you pick a % to charge to (80% for example)
I can do it both ways by car or charger as I have an ohme, similarly the ohme knows my cars state of charge so charges to a limit.

IOG was originally just this way, it wasnt until they added compatible chargers that people could use other car brands

 

[MG Clive]

I'm probably being daft here, but what's API ?

 

[LenEV2016]

I'm probably being daft here, but what's API ?

Car data application programming interface (API) enables interactions between a vehicle application and other applications or platforms

MG have refused access to theirs

 

[Rolfe]

If you have a compatible car

Audi: All models
BMW: Most models (i-series)
Cupra: All models
Jaguar: Most models
Kia: All models
Porsche: All models
Renault: (post-Oct 2020),
Seat: All models
Skoda: All models
Tesla: All models
Volkswagen:

They share their API with octopus and it means they can link in with your car directly, it reads the cars state of charge.
Instead of picking a % to add you pick a % to charge to (80% for example)
I can do it both ways by car or charger as I have an ohme, similarly the ohme knows my cars state of charge so charges to a limit.

IOG was originally just this way, it wasnt until they added compatible chargers that people could use other car brands

Oh, I see, you weren't talking about MGs.

 

[LenEV2016]

Oh, I see, you weren't talking about MGs.

No it was about a guy with IOG a Tesla and a grannie charger

 

[Rolfe]

I see that now, thanks.

 

[emmrecs]

Re: MGS5 and (some) access to its API.

Somewhat to my surprise I recently discovered that the ev.energy app which controls my Rolec Charger actually receives at least basic data also from my S5, even when the car is not plugged into the charger. I've just checked the app again and it reports it connected to my car "4 minutes ago" and it's definitely showing the correct battery SOC (the car is not plugged in).

???

 

[LenEV2016]

Re: MGS5 and (some) access to its API.

Somewhat to my surprise I recently discovered that the ev.energy app which controls my Rolec Charger actually receives at least basic data also from my S5, even when the car is not plugged into the charger. I've just checked the app again and it reports it connected to my car "4 minutes ago" and it's definitely showing the correct battery SOC (the car is not plugged in).

???

Never heard that from a member before, it might be worth folk checking their chargers, certainly with S5s.

It's octopus MG need to share it with though and they are still definitely not on the compatible vehicle list.

 

[Gomev]

My Rolec connects to my Hyundai via the Ev.energy app showing SOC but I suspect it's because I linked my Hyundai account to the charger. The Hyundai is the same as MGs in as much as it not IOG compatible and curiously not the same as Kia, which is compatible. As can be seen here the info on the Ev.energy app shows current data from the charger and SOC from 1 hour ago even though the car has been unplugged for several days.

 

[Everest]

I now have a Heat Pump and heat my hot water using that at night which has a 250% efficiency for hot water

Interested in that. Do you mean that the heat pump uses only 40% of the electricity that an resistive immersion heater would use? Also do heat pumps heat to 65-70degreesC which would be needed to heat up a hot water tank to a safe temperature?

 

[Everest]

It's octopus MG need to share it with though

Maybe not directly though enode (3rd party car data aggregator) are claiming beta support for some MG models (see https://developers.enode.com/api/capabilities/vehicle). Not sure whether IOG use enode at all?

 

[Stormgardkent]

I think most of the people who have these tariffs also have home batteries. I don't care a button what price ticket they put on the daytime use, because I hardly ever use any.

This was certainly why we decided on getting the EV and home car charger and then changed tariff from flux to EV. Not only reducing the home battery charge rate from 16p to 7p but also getting the extra cheap rate hours each night. The extra hours ensure that we are guaranteed to to fill the home 18kWh batteries to 100% every night. Probably greed but it would be nice to be given a better export rate where we are able to control export to the peak period 4pm to 7pm. Flux would pay us double what we now get with the allowed EV export. As it is we have no financial incentive to export during the period of high demand. EV use is currently only 6k miles a year so fuel saving is somewhat limited and will be reduced further when the extra road tax tariff is introduced.

 

[Bam Bam]

Interested in that. Do you mean that the heat pump uses only 40% of the electricity that an resistive immersion heater would use?

For us today our heat pump app reports roughly 400% efficiency for hot water, though I'm not sure it is totally accurate.

It essentially claims to have used 26% of the energy that an immersion heater would because 74% of the energy was harvested from the environment. (1.6kWh for 6.3kWh of water heating).

They are absolutely magic.

Also do heat pumps heat to 65-70degreesC which would be needed to heat up a hot water tank to a safe temperature?

Our heat pump installer set the water target to 48 degrees. He didn't even turn on the legionella cycle. Said he only does so for elderly customers because for most people there is virtually no risk if you are showering regularly (and thus changing the water in the tank).

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