Tariff switch timing wrong? Eco 10 new meter

Good evening @Mclacr ,

Thanks for bringing this up. We just need one more thing to help us answer this one, if you’re up for it. Please post photos of your setup so we can see exactly what you’ve got. If you’d rather not, let us know and we’ll work with what we’ve got here.

Thanks!

Thanks, I hope this helps. I’ll have a go at a wiring diagram if needed. 

Thanks @Firedog it has been hard to catch the times but I can try harder. I’ve got alarms set for the published times and I can set up a lamp where I am in the house so I can log when off peak switches. At the moment I know I’m an hour short each day on off peak. 
thanks for the tech help. It’s helpful to have how I thought it should work confirmed. I’ll do some logging and get on to support and report back.

Hey @Mclacr 

I’m really glad to see a couple of our volunteers have already stopped by with some really helpful advice already.

Firedog has given you a nice little timeline to follow of getting your information together along with photos, so if you do a closer check and take all your info to the Support Team they’ll be able to help out better, they’d ask you to do all of this anyway so it’s a good thing Firedog has already let you know to do this.

Let us know how you get on with everything

Thanks @Abby-OVO

Just to update  @Abby_OVO @Blastoise186  @Blastoise186  I’ve just emailed support.

Interesting, @Mclacr , thanks for getting up so early to check!

My guess - without having any evidence or experience to back it up - is that the 8 minute delay in switch-off time is the one built-in to the meter, the so-called randomized offset. This is part of SMETS2, designed to prevent unacceptable surges in demand when large numbers of power-hungry appliances are switched simultaneously. It should apply equally to tariff- and load-switching times.

The half-hour delay in switch-on times might be introduced either by the ALCS or by the heaters themselves to prevent them using electricity at peak rates before the tariff changes. 30 minutes is the maximum randomized offset, so switching on half an hour after the advertised time should avoid that particular problem. 

If the 30 minute delay is thanks to the ALCS, I don’t know whether it’s possible to tweak it to times like, say, 00:10-05:10, 13:10-16:10 and 20:10-22:10. The smart team will know. That way, you’d get almost the full whack of offpeak hours if that’s important.

One last question: you haven’t mentioned where you are in the world - which DNO region. I would have guessed from your username N Scotland (Scottish Hydro, the region known as 17 or P). We’re told that the E10 switching times are quite different from the ones you’re seeing, so perhaps you’re in the Southern England region (SEB, 20, H). The times you see match what they’re supposed to be down there. 

The region number is the first two digits of the bottom line of your MPAN (not the MSN you see on the meter - that starts with the year of manufacture).  

@Firedog  Thanks, I’m in the South of England. I was given the timings by OVO on the phone, they are the same as I can find by research. Also I’m not getting the duration of off peak power that I was told I would. The heaters are dumb, just a thermostat. 
I was told that the off peak period was for everything. I would have chosen a different tariff if that wasn’t the case. I understand load shifting. 
I got an awful reply from support. I’ll post it below.

cheers, Rob
 

I'm writing this email following your recent query.

As you have had the Smart Meter installed on the 28th of October it can take a few weeks for the selected times to be correlated with the system however please be assured that this will resolve itself and you will have the selected times on the meter as requested.

Please accept my apologies for any inconvenience caused.

Kind Regards