[Beasel]

@doverboy thank you again, that is very helpful and I will interrogate Eon as best I can! Need a break now though!

[geoffers]

Originally Posted by Beasel

1. My bills always show day and night usage, and I now check these against the actual meter. That's how I noticed that it's the Day meter operating when at off-peak times. There is some movement of the Night meter, but this must happen after I've given up and gone to bed at 3am (my night owl days are long over!)...

@Beasel - blimey: i'm on fire today....
How about this for a bit of lateral thinking 😁: the only way I confirmed my (incorrect) tariff time change at 01:30 BST was by actually observing it at that time.
Seeing that you like your pillow time, you could add a CT clamp (cheap from eBay) on your 5th circuit power lead and then get real time recorded power usage on that circuit, recorded & displayed on your phone.

Have a look at these posts which show what I'm talking about ...

This thread shows the device which has an induction coil (CT clamp) which clamps round the meter's live wire (no physical connection) and measures the flow of current in the wire.

It connects to your wifi network and displays the power usage in an app on your phone. It won't give you costs like the IHD, but you can monitor your actual power usage in the same way, and multiply by your tariff rate to give your usage cost if required.

https://community.eonnext.com/thread...ll=1#post52583

https://community.eonnext.com/thread...ll=1#post52753

The device is available from ebay, like the one shown here https://www.ebay.co.uk/itm/387240625624

[doverboy]

Originally Posted by Beasel

@doverboy thank you again, that is very helpful and I will interrogate Eon as best I can! Need a break now though!

Don't blame you @Beasel ... well it is Sunday. ❤ By the way some excellent tips by @meldrewreborn and @geoffers.

[Beasel]

@geoffers that's a useful suggestion thank you. The meter room is 2 floors down and at the end of the building via an alleyway, which I don't much fancy at 3am! It's also outside the range of my wifi, but presumably I could connect via some other means.

But before I don my hi-viz vest I'd like to get back to basics, which is Eon's suggestion that I need to engage an electrician to sort the timing issues out. Everything I've read from everyone's very helpful comments here, confirms my own belief that this is not the case and it's for Eon to sort out.

[WizzyWigg]

Afternoon @Beasel I've found this thread on an electrician's forum from someone who had a very similar-ish problem to yours. It's not a solution but it might give some extra food for thought.
https://electricianforum.co.uk/threa...problem.47622/

[geoffers]

Originally Posted by Beasel

@geoffers that's a useful suggestion thank you. The meter room is 2 floors down and at the end of the building via an alleyway, which I don't much fancy at 3am! It's also outside the range of my wifi, but presumably I could connect via some other means.

I'm sure it would be possible to run a much longer wire from the CT clamp at the meter to the wifi-device itself (which needs a mains plug anyway)

In fact I'm going to be doing just that myself, having run a cat-5e ethernet cable (only using 2 of the wires) from my rear garage to the meter cupboard at the front of the house for a load monitoring CT clamp when I have an EV charge point installed

[meldrewreborn]

@Beasel

all consumption within the off peak period , whatever the circuit, should be charged at the off peak rate. To me the issue is whether the meter is actually doing that properly.

getting the data via bright will allow you to view the data in hopefully half hourly blocks - and for the past 13 months! If you need someone to analyse the data properly , @geoffers or I could do that for you in excel.

[Beasel]

@WizzyWigg thanks for this - yes it's the same problem, although in my case it was the same supplier. It's entirely possible that the same issue was occurring when I had the old meter, but of course there's no way of knowing that now. Appreciate you taking the time to respond.

[Beasel]

@meldrewreborn thanks for this. I've now installed the Bright app, so will delve into that tomorrow.

[rwh202]

Originally Posted by Beasel

@geoffers
" Sure - the issue is whether the 2 meter "registers" are monitoring those circuits independently. So when the 5th circuit is live does the "night meter" monitor only devices on that circuit? For instance during the low rate tariff time, if say you turned the kettle on (wired on the main circuit) will the "day meter" record that or the "night meter"?"
I had the washing machine on at off peak time (the circuit was live because the hot water cylinder light was on) and only the Day meter was registering.

Just to confirm this point:
99% of smart meters (including yours) are single element.
There is only one energy measuring sensor - whole house usage is always recorded by it and just allocated to different tariff registers depending on time of day.
The rare exception are stored heat / super heat deal configured ones (don’t think they are offered anymore), where the auxiliary circuit was monitored separately. This gave three rates - peak / off-peak house + stored heat.