EDF economy 7, timings

MultiFuelBurner

dealyboy said:

My neighbour doesn't want to change her analogue meter despite my attempts to persuade her. I suspected she had time drift but no she told me it's because her disc sticks in cold weather ... she laughed.

Is that a back disc or the meter disc?

Swipe

dealyboy said:

My neighbour doesn't want to change her analogue meter despite my attempts to persuade her. I suspected she had time drift but no she told me it's because her disc sticks in cold weather ... she laughed.

My old E7 mechanical meter ran about 15% slower than my smart meter does. I know this because I took daily readings for my spreadsheet and there was a consistent 15% increment in usage from the day it was swapped out.

markin

Come Summer I would expect the battary to often be full and you to be gifting a lot of energy to the grid.

Gerry1

MultiFuelBurner said:

With a non smart meter I have read the best thing to do is one night wait up and watch the meter switch over and it's 7 hours from that point.

You read some very bad advice.  Could turn out to be a very expensive learning curve if you discover years later that it's actually 2230-0030 and 0230-0730 GMT.

MultiFuelBurner

Gerry1 said:

MultiFuelBurner said:

With a non smart meter I have read the best thing to do is one night wait up and watch the meter switch over and it's 7 hours from that point.

You read some very bad advice.  Could turn out to be a very expensive learning curve if you discover years later that it's actually 2230-0030 and 0230-0730 GMT.

Yeah it was from someone opposed to smart meters should have know better 🤣🤣 they are everywhere.

Gerry1

MultiFuelBurner said:

Gerry1 said:

MultiFuelBurner said:

With a non smart meter I have read the best thing to do is one night wait up and watch the meter switch over and it's 7 hours from that point.

You read some very bad advice.  Could turn out to be a very expensive learning curve if you discover years later that it's actually 2230-0030 and 0230-0730 GMT.

Yeah it was from someone opposed to smart meters should have know better 🤣🤣 they are everywhere.

Sometimes they're right...

Scot_39

gambleruk said:

I am with Eon Next on an old fashioned meter and mine change when the clocks change even though Eon say they shouldn't so my cheap rate ends at 6:30am in the Winter and 7:30am in the Summer, you are doing the right thing by making your own checks.

My smart meter stays physically fixed on GMT for ALCS e10 in my case supply times  - not adjusting those for DST at all.

So like you an hour later clock time in summer.

I however would have initially expected the OPs quoted 00:30 to 07:30 to actually be GMT - and slip to 08:30 - based on other posts here.

I wouldn't expect an old analogue meter setup to change with GMT DST.


But there are reportedly others whose smart meters that do change - and its possible as iirc its in the original smets1 government final spec submitted to EU for regulatory approval - as a software parameter switch.

And that could be why posts on likes of BG EV fixed hours differ - with CS saying need their own specific meters to be fixed - ipunless thats done on 1/2 hrly billing.

So the safest thing to do is check - easy if have e7 specific wiring to say nsh or hw immersion - especialy if sockets have e.g. active red led.

Scot_39

gambleruk said:

I am with Eon Next on an old fashioned meter and mine change when the clocks change even though Eon say they shouldn't so my cheap rate ends at 6:30am in the Winter and 7:30am in the Summer, you are doing the right thing by making your own checks.

But that just says the meter isn't in fact changing its time base from GMT.

DST / BST is just an even more modern artificial construct than the GMT standard.

It's not if you like a more physical standard - it just reacts to a slow change in one - dawn or dusk doesn't suddenly change by an hour.

dunstonh

But there are reportedly others whose smart meters that do change - and its possible as iirc its in the original smets1 government final spec submitted to EU for regulatory approval - as a software parameter switch.

There is for potential for misunderstanding there.
my old digital conventional meter kept the meter display time on GMT
my SMETS2 liberty meter switches display time on the meter to BST but retains GMT as the switchover between rates.
Just because the meter display time switches to BST doesn't mean the rate changes with that.

Scot_39

I know.

That's if anything the standard.

But the display time and  the tariff and the acls time whilst linked can be varied.

The  switch tables and how they operate across gmt bst were iirc for at leastone if not both configurable parameters.