I've heard all the conspiricy/ludite stuff. As an engineer I don't buy into it.
Nor me
But there are some risks that no-one seems to be talking about. From the symbols on the front it looks like most smart meters have a contactor inside. So the supplier can cut your power remotely. This shouldn't be an issue if you pay your bills. But if there were to be a glitch in their system, people could wrongly be cut off. And how long would that take to sort out whilst you try to carry on life.
Both electricity, and gas smartmeters do indeed have either a contactor, or a valve inside, with the potential to cut off your supply by remote control.
In the case of the electricity meters this is useful for several reasons, e.g. if it is to be operated as a prepayment meter. Or if, heaven help us, there were to be a need to introduce rolling blackouts (I was a child of the '70s and well remember all that, the three day week, candles and oil lamps at the ready). With almost universal smartmeter coverage by 2025, such things could be much better managed, so for example "priority customers" (I am one) could be spared being cut off for a while.
This, ATM is a remote scenario. Everything is being done to stop "the lights going out" for domestic users, should wide area blackouts happen, in some places, anarchy might soon enough happen, looting being the least of it. Business users will have negotiated their own arrangements, either, rarely, be on uninterruptible arrangements, or more likely something else, where they can choose to reduce their demand rather than pay a premium to keep on running at full power at times of limited supply. It would also be be death to the prospects of whichever government was in power at the time that it was necessary to declare such a national emergency.
For domestic gas supply this is a more remote scenario. Gas cannot be cut off somewhere back in the mains pipework, once done it then takes a lot of work to bleed all that through to eliminate e.g any air, or water, that may have got in. However a smart gas meter can cut off an individual premises with little risk. As for example a prepayment meter, even the old "coin in the slot" sort of thing that I used to have in a bedsit.
Which is why I am still dithering about having a gas smartmeter installed, yet, almost certainly incorrectly. My trad. gas meter will keep on supplying me. Once near-universally in place, gas smartmeters could allow variable pricing, even complete cut-off. But I don't see that happening, anytime soon, except to an individual user who has persistently not paid their bills.
The difference is that electricity cannot yet be stored on any useful scale, apart from in e.g. pumped hydro storage, to do peak lopping.
Gas, and water, however can.
Also, if the system got hacked, you could see huge numbers of houses cut off. (Knowing how the data is routed, it should be fixable, once found. But that is still going to take time.)
An existential threat. I hope. The Data Communications Company DCC who look after this are supposed to be on top of this. And doubtless engaged with other government agencies who are also supposed to know the bigger picture.
I believe that when a smart meter is installed it is tied to one company and almost impossible to switch for better tariffs, could be wrong, frequently am.
That was in the early days of SMETS1. When each company had proprietary methods of using them. This has all changed with SMETS2. Basically if you have/had a SMETS1, if you changed supplier it probably would not work with the new supplier (incompatible systems) so reverted to become just an ordinary dumb meter that you have to read yourself.
There is an ongoing programme to try to bring old SMETS1 meters into the DCC system but there are many technical obstacles still.
Fundamentally there has never been any obstacle to changing suppliers with one of these, just that the meter would probably go dumb, So back to where you were with a trad. meter, submitting your own readings.
I have the same - the times the eco 7 or white meter in scotland start are meant to vary by geography. You can google them.
I think the pople that set them up often get it wrong. Daylight saving? I have found the only way to be sure to watch the meter for a few minutes at the hour its meant to turn on.
There are three types of switching between peak and off peak. Either a clockwork thing that just works, as I used to have, connected to a dumb meter with dual displays.. Or a radio controlled device a Radio Tele Switch. Or nowadays smartmeters submitting 30 minute data.
The Radio Tele Switch was never much good, and is to be turned off next year. From the Ofgem open letter that I linked to earlier:
C
urrently the technology which operates the Radio Tele Switch meters (RTS) is scheduled
to be switched off in March 2023. We are aware many suppliers already have a suitable
meter in place for these customers, however we are also aware of some wider issues. We
fully expect all of industry to be proactively working towards solutions to any potential
barriers so that consumers are not left exposed to any potential detriment.
One of the real reasons behind going to smart meters is for the guberment to tax you when charging your car!
They will be losing a huge amount of revenue as people go EV. They will want it back.
To save the planet of course
This is a completely different conversation. For those of us fortunate to have a driveway/off road parking, and the funds to buy a pure EV so could charge overnight from from low rate domestic 'leccy, at 5% VAT rather than 20% as the public chargers have to pay for theirs, it works for now. A kickstarter if you like. for early adopters.
But converging with the cost of simply running a fossil fuel powered vehicle.
E.g. consider a modest EV, might do four miles per kWh of charge. Compare with a similar fossil powered modest vehicle, might do 50 mpg.
Plugged into an ordinary 13A socket, that's 3kW. Do the numbers and that can deliver 'leccy sufficient to drive it at 12 miles per hour of charge. Over seven hours, overnight, maybe 84 miles. About a half charge, 21 kWh for a typical modest small EV's battery capacity. Two nights charge, no use otherwise, and they are moderately filled up. Costing me maybe £5.
This is how I juice my visitors cars, from a 13A socket, to give them an overnight top up to run around a bit for the next day. If they need more, then they can find a public fast charger nearby and pay the going rate for that. I do not have an EV myself
If I put in a standard 7 kW home charger, say a PodPoint of course I could fill them up more fully overnight, same cost per mile. That would take maybe 30A from my mains supply, hence why I was pleased to have it uprated when my smartmeter was put in, by asking nicely. The PodPoints can back off their current draw if the household supply is becoming overloaded, but having a bit more headroom is always good..
Which in my case on my straightforward tariff would be 9.21p/kWh. If I had to give it a boost in daytime it would however be 53.38p/kwh.
At 9.21p, I reckon that's about 0.23p/mile. Excellent. At 53.38p it would be 13.38p/mile
Unleaded petrol, average price today £1.64/litre, in a 50 mpg vehicle, works out to be about 15p/mile. Not a lot of difference.
Fuel duty rates, BTW, are currently 52.95p/litre for petrol, and 62.67p/litre for diesel. Yes, that might be a lot of revenue to lose once EV penetration becomes a thing. That tax/duty BTW goes into the exchequer so comes back to everyone, one way or another.
My mates, three of them, with Teslas, are beginning to realise that, when they run them around long distance and power them up from Tesla superchargers, it is nowadays costing them much the same, or more than their previous petrol powered things. I suspect much the same for other people with more modest transport, depending on public charging points, at the rates that nowadays apply when plugging in to them. Probably because they are not in the minority of us who have a driveway and can charge them up at home, overnight.
Ultimately road pricing has to come. The technology is established, e.g. black boxes insisted on by insurance companies for young drivers, GPS and surveillance as to where they are, how fast they are driving, is that appropriate, etc.
I would welcome that, if it obsoleted road tax, which is nowadays a burden for me, running a car, a campervan, and three large motorbikes. I can only use one at a time, yet must pay for all five, or SORN the ones not being used as I do at the moment. Might also make people think about whether that journey is really necessary, or could be done by walking, cycling, or even an electric bike. OK I am far from typical.
I had Smart meters (Gas & Electric) fitted about two years ago. I'm with Octopus on an Economy 7 tariff and wanted to take advantage of their more flexible tariff options, particularly with the pending arrival of an electric car. I also have solar panels and a home battery and really wanted to see how much electricity I was exporting to grid.
I agree. With my new electricity smartmeter, on 30 minute reporting, I can now access all that sort of data from my "Energy Hub" Even just the in home display shows any export.
Also thinking ahead to maybe putting in grid tied solar. Already doing the calculations, EDF are part of the Smart Export Guarantee and export tariff. My meter is compatible, as is the home display.
Smart Export Guarantee
For me, I would be paid 5.6p/kWh exported, as an existing customer. New entrants however would only get 1.5p/kWh. So I am all right, jack.
At 5.6p there would be little reason for me to install a battery bank, nor divert it to e.g. topping up hot water during the day. Basically I would be selling it to them during daytime at 5.6p, when I don't have much use for it all, then buying it back again at night for (on my simple standard variable tariff) at 9.21p. On the face of it, not great, but in fact rather good. For me, with my circumstances. No hugely expensive battery bank, no gadget to divert surplus to my hot water cylinder, I prefer to keep things simple and easily managed.
The Smart Meter also gives me access Octopus's more Flexible tariffs - so for example the very cheap (7.5p/kwh) Go tariff for charging cars overnight.
My simple standard variable economy 7 tariff costs me 9.21p/kWh. For seven hours. Midnight to 07:00 I'm not sure where you got that 7.5p Octopus Go figure from, seems old. It is currently 12p/kWh for only four hours, 00:30 to 04:30.
Octopus Energy
Thy also have an Intelligent Octopus offer for six hours, but, just checked, for me that would still be 10p/kWh. Plus I would need to have their Ohme charger fitted rather than something else. And pay a higher standing charge than I do at the moment.
Octopus are very clever, lots of interesting ideas and complexity, but I have looked into them in detail, and for me the numbers simply do not stack up, compared with what I am on. For me, maybe not for others.