Hi @awills61 ,

Generally it’ll be one hour later in Winter. Smart Meters run on GMT 0 all year round and don’t change their clocks for British Summer Time.

That’s what I thought but this page on the OVO site seems to say that in Scotland (MPAN 17) the times  are the same for GMT and BST unless you have a PAYG meter. So I was interested if someone who had just had a new meter fitted on E10 could verify this. 

It’s only Trad Prepay that do that - Smart Meters remain on GMT all the time.

So the times in that page are wrong then?

Nope, they are correct. Just needs a note added for this purpose, easy fix.

So the times don’t change for GMT/BST then

They do for Traditional Meters.

@Blastoise186 I think reading your notes here is confusing .. you said 

but then @awills61 mentions this page 

So the times don’t change for GMT/BST then

 

and then you say .. 

From what I understand, apparent times do change for smart meters depending on GMT or BST because they don’t change their base time

So what times would apply to me then when I get my smart meter?

Errr … are you sure about that? My E7 offpeak hours have just changed from 01-08 to 00-07 for the winter. I’d call that an hour earlier.

Plan timings are specified (really confusingly in JS) as either GMT:!0 or GMT:!1. My own are shown as GMT:!0, meaning (perhaps) not false. So they stay on GMT all year round and shift with the kitchen clock twice a year.

I see that some E10 times are shown as GMT:!1, meaning (again, perhaps) not true. I’m still waiting for one of the luckier Northern Scottish THTC>E10 migrants to tell us what (if anything) happened yesterday. Perhaps they’ve been put on the plan that has (GMT:!0) offpeak times “All days 0000-0500, 1300-1600, 2000-2200”, shifting with BST. I’ll be happy to be proved wrong!

Just a note about the page referred to above: as usual with OVO help articles, it’s not dated, so we’ve no idea whether it’s current or not. @Emmanuelle_OVO  may have consulted the horse’s mouth to find these timings. 

That is my understanding 

Do you have any evidence for this? I’d love to see it!

There is also the question of the meter’s randomized offset, which could theoretically be 30 minutes. So a customer who sees his tariff change at ~13:30 might be seeing a change nominally timed for 13:00. ALCS load switching might be set to different times, just to confuse matters even more, e.g. if a customer is relying on the IHD’s red traffic light to tell him when the switch happens.

I don’t unfortunately although logically that should be the case. 

Yes, that does complicate things but that’s why the separate circuit switch should automate everything connected to it while needing a visual alert for external circuits 

Hey @awills61, 

I found another thread which might be helpful in giving the answers you’re looking for:

The E10 times are listed as:

Economy 10

Economy 10 provides 10 hours of off-peak electricity for everything in the home and can be suitable for a number of electric heating systems, including wet electric central heating and storage heaters. Storage heaters will automatically store at the off-peak times on the lower rate.

Electric immersion water heaters will also usually heat automatically during the off-peak hours and you may want to install an external timer to regulate when and for how long the water heats.  The off-peak hours offered with an Economy 10 plan add up to 10 hours during each 24-hour period – which is why this plan is known as Economy 10. 

(MPAN) 10,11,12, 14,15,16,19,20, 21, 22, 23

(Traditional, Pay as you go & Smart)

12.00am - 5.00am 1.00pm - 4.00pm 8.00pm - 10.00pm (GMT)

1.00am - 6.00am 2.00pm - 5.00pm 9.00pm - 11.00pm (BST)

18 & 13

(Traditional)

4:30am - 7:30am 1:00pm - 4:00pm 8:30pm - 12:30am

(Paygo & Smart)

4:30am - 7:30am 1:00pm - 4:00pm 8:30pm - 12:30am (GMT)

5:30am - 8:30am 2:00pm - 5:00pm 9:30pm - 01:30am (BST)

17

(Traditional)

4:30am - 7:30am 1:30pm - 4:30pm 8:30pm - 12:30am

(Pay as you go and Smart)

4:30am - 7:30am 1:30pm - 4:30pm 8:30pm - 12:30am (GMT)

5:30am - 8:30am 2:30pm - 5:30pm 9:30pm - 01:30am (BST)

Let us know if this helps