@meldrewreborn Thank you, yes I believe this 5th terminal is the circuit that activates the timed appliances (ie the cylinder and any storage heaters.) The "boost tank" is controlled by a regular circuit. In April I discovered the automatic timing to the main tank is not in sync with off-peak times. I turned the main tank off, and had a timer installed on the boost tank. I set it to operate during the off-peak hours given to me by Eon, but when I checked at the meter, it was the day meter that was running - the night meter did not change.
Ofgen suggest the average % split between Day/Night on Economy 7 is 58/42. Mine is more like 79/21. Even allowing for the fact that I don't have storage heaters (in fact I have no heating at all!) this percentage seems skewed to me.
I've put this all to Eon - will see what the come back with.
Even if you were taking no steps to maximise off peak use, 7 hours out of 24 is 29.16%, so realistically that should be the minimum. What I think is happening is that your water heating is taking place as scheduled by you, but you might only be getting one hour of that at off peak rate by the meter, while the rest is at day rate.
The key to unravelling this mystery is to identify when the meter is actually incrementing the off peak register, and this needs a MK1 eyeball. In your flat, perhaps you could ask your friendly electrician to wire a lamp into the hot water (5th terminal) feed so that you can see when its live without traipsing to the basement. A switched neon plate for your hot water would do it on a permanent basis - just an idea
Current Eon Next customer, ex EDF, Zog and Symbio. Don't think dual fuel saves money and think the smart meter programme is a waste of our money. Chronologically Gifted. If I offend let me know by private message, but I’ll continue to express my opinions nonetheless.
@rwh202 thank you, that makes the whole process sound like it should be very simple....and should be easily fixable by Eon.
It would be interesting to know, if Eon were to concede that the timing had been wrong all this time, whether I have any case for compensation...
@meldrewreborn I've signed up to Bright, now need to wait a couple of days to verify. I'll be with my 101 year old Mum till Friday, so might be a while before I can attend to this.
@meldrewreborn well I've got the data from Bright, and was initially quite excited. Until I noticed the off-peak time listed as 22.30-07.30 which is clearly incorrect. They've also calculated the costs at those rates. So it doesn't look like they are getting the off-peak times from the meter itself (despite what their FAQ says.) Maybe it can't handle non-contiguous times. Anyway it's providing useful information.
Meanwhile, Eon has suggested they might possibly send someone out, which is progress of sorts.
I'm sorry to hear about your Mum - they're such a worry at that age!
i mainly use the app to look at consumption. The tariff data comes from the meter and isn’t definitive, only indicative, it’s not used for account billing. The meter consumption data is sent automatically in 10 minute blocks. The billing is done by Eon next making a request for the current readings and getting a reply. The consumption data is held in the meter for 13 months , the back reading data is not retained, only the current readings can be interrogated
things get interesting when you follow the system to down load the past consumption data from glowmarket, which is your next step..
@meldrewreborn well I've got the data from Bright, and was initially quite excited. Until I noticed the off-peak time listed as 22.30-07.30 which is clearly incorrect.
@Beasel - the timings and rates which are loaded to the meter are purely to allow the IHD to attempt to show the cost of energy usage to the user. They (thankfully) won't be used in the billing ... for instance in my case on Next Drive I'm correctly billed from midnight to 7am local time, but the timings on the meter are set to 00:30 - 07:30 GMT so the cheap rate currently shows on the IHD as between 01:30 - 08:30 BST😶
They've also calculated the costs at those rates. So it doesn't look like they are getting the off-peak times from the meter itself
For people on standard single tariffs, the billing is done using the calculated difference between last month's and this month's meter totals
For people on ToU tariffs like Next Drive, the billing is done by applying the particular tariff rate to the ½ hourly usage for the relevant time of use
However for people with 2 rate meters, what we don't know is whether they're billing on monthly metered totals or the ½ hourly ToU readings
Since your meter has 2 registers they could be billing on the monthly difference for the individual day and night meter total registers
or they could be using the ToU readings, and applying the off-peak/standard rates accordingly
Now you've got access to Bright, you'll be able to download the actual ½ hourly historical data from https://www.glowmarkt.com/pages/property/energy-data in CSV format, which you can load into excel and hopefully confirm your energy timing/usage matches your billed usage
@BeaselThe consumption data is held in the meter for 13 months , the back reading data is not retained, only the current readings can be interrogated ... things get interesting when you follow the system to down load the past consumption data from glowmarket, which is your next step..
Interestingly: although the SMETS spec says the meter should hold a minimum of 13months data, my CSV download readings from Glowmarkt go back to 30/06/2022, which looks like 13mths prior to the date I registered with Bright.
So I can only assume Glowmarkt retain your readings on a database, and every time you request a download they pull the most recent readings from the meter, update the DB then send you the lot
@geoffers to be honest it's not consumption I'm worried about, but how the rates are being applied. It seems to me that Eon is hoodwinking consumers into thinking they are using at low rate when they are not applying those rates at the times stipulated. To tell people low rate is XX-XX time and then not apply those times, or say oh well there is a 30 minute (or whatever) variance to those times, is just outrageous. If I gave someone a quote for my time, and then said sorry but it's 50% extra for that particular hour that I worked, my business wouldn't last a day.
I suspect many people are being conned by this, and I'm now wondering how to go about bringing it to public knowledge.
Last edited by Beasel; 1 Day Ago at 10:56.
Reason: spelling
@Beasel - Agreed: I was in the same situation when starting with Next Drive, so by downloading the Glowmarkt CSV data I was able to analyze that to check that the bills were correct (they were - although the meter displayed timings we're wrong and irrelevant anyway)
I have since taken this analysis a stage further by doing a daily download of the meter data (using the Glow API on a raspberryPi microcomputer) and storing this in a mySQL database so I've got instant access/analysis etc
I'm currently waiting for a Glow CAD which will give me Real-Time access to the meter data (Why? you may ask... Because it's there 😁)
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