Hi, I note that my GivEnergy AiO is now charging the battery outside of the windows set in the WW APP - why? I have ECO set on the AiO and Slot 1 is from 0:00 to 0:00

You cannot have a 24 hour window. Some do 00:00 to 23:00, others like me do 00:00 to 16:00. It's because each published day the prices finish at 23:00. There is a technical reason but I cannot remember while on mobile

@"KristianS"#p5954 thanks. I’ll set Slot from 0:00 to 23:00 and see what happens tomorrow

@"KristianS"#p5954 I think I might be confused over the slot settings. On the GivEnergy AiO the Slot 1 resets to from 0:00 to 0:00 even though I changed this to from 0:00 to 23:00. The same terminology is used on the WW APP. I did have a slot from 19:00 to 0:00 which I have now changed to 19:00 to 23:00. Is this what you were suggesting?

@"Steve1"#p5961 Possibly. My suggestion would be to not try and do anything in the GivEnergy portal for management of charging or discharging - or the app for that matter and let WW do everything you need. It will cause conflicts and weird behaviours I would recommend resetting your GivEnergy back to defaults and then driving all slots through the WW portal. [URL=https://i.imgur.com/sW2hGue.png][IMG]https://i.imgur.com/sW2hGueh.png[/IMG][/URL] Then build one, or more, Agile Charge Window sessions to control your device Two as an example [URL=https://i.imgur.com/S7xLPRn.png][IMG]https://i.imgur.com/S7xLPRnh.png[/IMG][/URL]

@"KristianS"#p5975 Thanks. I managed to get the AiO to discharge to the house between 16:00 hrs and 19:00 hrs (I think by setting this window on the GivEnergy DISCHARGE option. However, the AiO has ignored the WW battery charging setting for later tonight and has started charging the battery from the grid from 19:00 hrs (possibly due to conflict between the AiO APP and the WW APP?). So will give your suggestion a trial. One thing, on the WW APP how do I get the AiO to supply the home between 16:00 and 19:00 hrs from the battery?

> @"Steve1"#p5984 One thing, on the WW APP how do I get the AiO to supply the home between 16:00 and 19:00 hrs from the battery? That should be achieved by having Eco mode toggled on in Giv. We don't touch Eco for charge instructions and depending on the type of Giv inverter generation and user settings, we tend to revert to Eco after export (to grid) instructions. In other words, you shouldn't need to do anything, apart from have Eco toggled to On in your Giv app.

@"Steve1"#p5984 I have never had any time setting set on the Timed Discharge window [URL=https://i.imgur.com/454RLsp.jpeg][IMG]https://i.imgur.com/454RLsph.jpeg[/IMG][/URL] That is not necessary.

Any conflicts should be removed by performing a full reset. [URL=https://i.imgur.com/jFqqLPE.jpeg][IMG]https://i.imgur.com/jFqqLPEh.jpeg[/IMG][/URL] Once that is done, then any charging slots selected by the Agile charging window will take over. Every other of the 48 half hour slots will be in Eco mode which will mean not pulling from the grid

@"admin"#p5985 So I am still confused. With ECO set on the AiO the AiO seems to select charging windows that I have not selected in the WW APP, so what value is the WW APP performing if ECO ‘does its own thing’? Surely the whole point of the WW APP is to be able to select the cheapest Agile windows for charging the battery? My understanding was that the WW APP would control the Agile windows for charging the battery (and not the ECO mode on the AiO).

@"Steve1"#p6009 That is what is happening. WW will select the cheapest slots for you as long as you have an Agile charge window set up (and active) say 00:00-23:00, or you may split them up in multiple charge windows - it’s up to you, and then select number of half hour slots you want WW to select within that period. Regardless of all that, Eco setting should be set to on by default on your Giv inverter if you want to service house load in between charge or export slots.

Agile Charging Slots

KristianS

Steve1 Hi Steve, thanks for the reply. This is even better than chess!

To complete my understanding, each point in turn:

Understood, and they are quite a commitment financially and you need the space as they don't stack. I too am considering a second one once they come off Beta as there are still some issues with the firmware for multiples that GivEnergy are working through and will in time no doubt solve.
I understand why you would want to stick to Agile, as I did, until I got my EV - But that 6 hours of daily at £0.07 cannot be ignored! I charge my AIO [exactly the same as yours] using WW and the IOG - Intelligent page - as well as my three Eco-Flow batteries using that rate every night, whether my car needs charging or not. That is the beauty of that tariff. If you need to charge your car at random times then, if there is capacity on the grid, and you need your BEV at a certain SoC then Octopus will allocate you additional slots outside of the standard overnight window. The benefits are, that all your houseload - inc your ASHP would be using this tariff at the lower rate.
Your BEV can be charged in approx 10 hours [when required] but as you say you don't need to charge every day
At that rate your ASHP will draw more than the AIO can deliver. So, even if it were to pull from the AIO it is still going to draw from the grid at the same time, just at a lower rate - again, this lends itself to making sure it doesn't pull during the most expensive part of the day on Agile. This would be less of a concern on IOG - at a max rate of £0.25 peak
Some ASHP have backup / top-up emersion heater so that the ASHP doesn't have to work so hard to get the HW up to temperature needed by HW rather than heating, which again could be done overnight with IOG.

I think it is fair to say, unless you plan to swap to IOG and 'charge' the house with heat overnight and then tune down during the peak period and then use the AIO and any solar to help you get to the next window starting at 23:30, then you have somewhat a challenge on your hands with Agile.
It is fair to say, that typically Peak is 16:00 to 19:00 ish, with another peak from 06:30 - 09:30 with a lull during the early afternoon and obviously much less overnight.
As a potential alternative. you could limit the output from your AIO to be 1kW when discharging. That way, it would last longer per day, use less cycles and then cover you longer for those days when you get sun, overall bringing down the potentially costly days to a more manageable level. Just a thought.

Steve1

KristianS Again, many thanks Kristian.

Glad you are enjoying the chess.

Taking all things into consideration, I am now very tempted to move from Agile to IOG.

As you say, we can keep the EV fully charged overnight (at 7p/kWh) and also max out the AiO battery (to 13.5 kW). We can also time-shift some other appliances (which we do try to do with Agile) W/M, TD and Dishwasher to use the overnight rate.

Even looking at tonight’s Agile slots, the lowest is still above 11p/kWh.

We can then also run the ASHP 24/7 and not have to have it timed out between 16:00 and 19:00 hrs.

I think my only question is how does WW and IOG work together? You say that you use the ‘intelligent page’ - I assume this is within the WW APP?

On another (hopefully interesting) topic. The EV we have just bought is the KIA EV3 - which I believe is capable of V2G/V2H (but not yet enabled in the UK). Our EV home charger is currently the GivEnergy one, but I believe Zappi will be bringing out a bi-directional A/C EV charger later next year. The thought being that the battery in the EV3 (approx 80 kW) could act as a second source of power to the home via V2H and may mitigate the need for a 2nd AiO.

Steve1

KristianS Hi Kristian,

Further to earlier post I note that the IOG tariff is not currently compatible with the EV3 and/or GivEnergy EV charger - bummer.

KristianS

Steve1 Yes, once on IOG, you ask Admin to enable IOG integration and then WW deals with the overnight sessions and any extras that you are given outside the std window.
I too cannot wait for V2G as you rightly say, that is one hell of a battery sat on the driveway!

KristianS

Steve1 oh no really!
Time to push Octopus and GivEnergy for that support then.
So, back to how to make the best of Agile.

Steve1

KristianS Hi Kristian, I am now chasing both Octopus and GivEnergy on this topic 👍

Steve1

Steve1 Hi Kristian, the following is the reply I received from Octopus;

In regards to your KIA model, currently, we have temporarily paused new sign-ups for Kia cars on the Intelligent Octopus tariff. This is due to some technical issues we are working to resolve. Unfortunately, there is no specific timeframe for when Kia sign-ups will be reinstated. We understand this can be frustrating, and we appreciate your patience as we work on a solution.

However our EV option for you would be Octopus Go. This is our smart tariff with super cheap electricity between 00:30 - 05:30 every night

Night rate (00:30 - 05:30):8.5p / kWh
Day rate (05:30 - 00:30):25.08p / kWh
Standing charge:61.56p / day

KristianS

Steve1 Hi Steve,
Interesting.... but doesn't look like a permanent issue and hopefully will be resolved soon.
So, Octopus Go. Are you considering it?
Downside is that you do not get any extra slots - the cheap rate is at those times only.... and is a penny higher for the lack of flexibility compared to that that IOG gives Octopus.
You could still use WW to control your AIO using the standard scheduling feature and like I said before, you have the option to up the charge rate of heat into the house during this period, then tune down during the more expensive period. Then with a fixed output of say 1kW from the AIO + anything the solar panels give you, could mean very little pull from the grid during the peak. Charging the car becomes a nightly 'top-up' excercise.
Thoughts?

admin

Steve1 Another thing to consider for anyone on Octopus Go, is EON’s Next Drive tariff, which does seem more competitive.

You get an extra two hours off peak at 6.7p/kWh.

£50 referral available here: https://share.eonnext.com/onyx-finch-7375

Steve1

KristianS Hi Kristian, think I might stay with Agile ATM. I have simplified my charging schedule (see below) and will monitor usage/cost for a while.

KristianS

admin I concur. I just, and this is a very personal thing, like what Greg Jackson is doing to the industry and how his organisation is helping to bring down bills across the board. So, I prefer to stick with Octopus while they are revolutionising this archaic sector. EON have finally got the message, but they have only recently got that token. Of course, Kraken is the very thing that helped them to achieve it..... https://octopus.energy/press/eon-completes-migration-of-two-million-former-npower-customers-to-eon-next-in-record-speed/

Steve1

admin Ideally would like to stay with Octopus as I like their innovative approach (which I think other companies are now mimicking)

admin

KristianS I agree with you with regards to Octopus’ innovation and Greg’s approach to disrupt the industry. It’s desperately needed.

Quite interesting that they moved to Kraken too. Opens the door for the competitors to offer more innovative & dynamic tariffs too. And that’s surely a good thing.

Perhaps necessary in order to move to locational pricing.

Steve1

KristianS Agree 100%

KristianS

admin Cannot wait for locational pricing.... it is about time the 'South' [of England and Wales] paid for what they use rather than what they can get away with. Yes, there will be some hard decisions about the interlinks between Scotland and the south of England, but it would encourage more investment both onshore and offshore in the south

admin

KristianS Even though we're in South Wales, I agree...

KristianS

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