#1 Sept. 28, 2017 13:12:55

pmurray
Registered: 2011-11-12
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Smart meters

Where are we at viz a viz smart meters and solar panels? My power supplier has offered to put in (and maintain) a smart meter “for free”. I'm suspicious!

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#2 Sept. 28, 2017 18:48:20

WendyNorthrop
Registered: 2012-04-23
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Smart meters

Good Energy have consistently refused to install a smart-meter for us…

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#3 Sept. 30, 2017 17:02:59

Gary
Registered: 2014-06-29
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Smart meters

All smart meters are free (well, we pay for them via the normal gas and leccy bills). The question is, what is the point of them for PV or non-PV folk?

For PV they cannot monitor the PV side anyway, and many of us have some sort of monitoring anyway. And is it really difficult to read the meters once a month?

Some suppliers suggest that you must use the smart meter to report actual export, rather than the deemed 50% but my supplier (E.On) says they are not calibrated, so cannot/should not be used.

Until this is all resolved I plan to decline their kind offers………….

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#4 Oct. 1, 2017 08:17:35

BackYardSolar
From: Surrey, on Gatwick flight path
Registered: 2015-05-30
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Smart meters

I am sitting on the fence too, as I don't think the technology is there yet.

My neighbour had a smart meter fitted and the two youths that came to fit it tried to condemn his gas boiler as they thought it was faulty. After much of a heated debate over two hours a more experienced installer confirmed the gas boiler was fine and the mark on the wall was not a soot mark from a leaking boiler.

He now wants to change electricity supplier and has been told that he will need a new smart meter as the one he has is not compatible with his new supplier.

It appears the whole thing is a mess being rushed in by half wits off the street with no thought for cross supplier compatibility.

And what is the advantage to the consumer? None that I can see.



SolarEdge SE4000 inverter, 16 x Romag powerglaz 235W panels. South facing at 30 degree angle in Surrey just East of Gatwick and under the flight path.

ESS AC coupled system using a Victron Multiplus 24V/1600VA Inverter/Charger - 8.16kW Trojan 875 battery bank.

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#5 Oct. 2, 2017 17:05:39

rogerhoward
From: Southend
Registered: 2012-08-01
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Smart meters

None of the new interoperable ‘SMETS2’ smart meter plus IHDs had completed the testing and accreditation process the last I heard, 2 months ago. Meantime it was the non-interoperable SMETS1 smart meters that companies had been supplying.

The 2020 end-date for completing the smart meter rollout program hasn't changed though, and I'd imagine that energy companies are becoming mighty nervous about their ability to still meet that schedule on time.



Economy 10 tariff provides 6.9p/kWh off-peak import between 12am-5am, 1pm-4pm and 8pm-10pm; http://www.pvoutput.org/aggregate.jsp?id=21047&sid=18934&v=2&t=m on approx. 63% off-peak usage, 22% solar usage, and 15% peak-rate usage.
1,900kWh annually is exported, mostly in summer, on approx. 3,200kWh generation. Approx. 4,500kWh/year is imported, mostly for (a) winter and springtime off-peak Storage Heaters, and (b) off-peak hot water Immersion heating (which is “dumb”, i.e. not linked to the solar PV).
PV array is split East-West. Income is from Phase II 21p/kWh Feed-in-Tariff plus smart metered 3.2p/kWh Export Tariff.

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#6 Oct. 2, 2017 18:45:05

Gary
Registered: 2014-06-29
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Smart meters

But even when they have, I still don't see what they add? it takes me 30 seconds to read the meter and 2 minutes more to log-on and enter the reading. I do that each month, so a whopping 30 minutes per year. And seeing as I am on DD and pay monthly too, accurate monthly readings would save a similarly whopping £0.

I know governments often push forward with crazy policies but this one takes the biscuit!

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#7 Oct. 3, 2017 08:35:23

BackYardSolar
From: Surrey, on Gatwick flight path
Registered: 2015-05-30
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Smart meters

Ok, first the government have now said that everybody has to be offered a smart meter by 2020. So refusing one is fine, as they are not compulsory. And remember who is paying for all these smart meters. Us through our electricity bills.

There are also some issues too with wireless radiation from smart meters when they transmit their readings. In poor reception area's this means that they will be constantly trying to communicate. Your meter is not just read once a month but constantly so they can get a profile of your energy usage to better run their networks.

Smart meters are also supposed to interact with a new breed of smart appliance, so if the utility company have a low voltage situation they could reduce their network load by switching off those smart appliances until the network recovers.

I personally will refuse a smart meter as there is no advantage to me and I don't want my utility company spying on my usage patterns.



SolarEdge SE4000 inverter, 16 x Romag powerglaz 235W panels. South facing at 30 degree angle in Surrey just East of Gatwick and under the flight path.

ESS AC coupled system using a Victron Multiplus 24V/1600VA Inverter/Charger - 8.16kW Trojan 875 battery bank.

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#8 Oct. 3, 2017 12:45:21

bhommels
Registered: 2011-10-03
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Smart meters

The feature I would be looking for in a smart meter is long-term logging of consumption and export data. Although many (cheap-ish) monitors offer this as standard, none of the smart meters do. Some energy saving measures (new A++ fridge for example) are not obvious unless a full year of high resolution data is analyzed. And then there is the PV issue….
So I too will be sittin on the fence a bit longer

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#9 Oct. 3, 2017 14:52:19

BackYardSolar
From: Surrey, on Gatwick flight path
Registered: 2015-05-30
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Smart meters

Hi bhommels

I have a eco-eye monitor but it fails miserably, as it only takes a reading every 4 secs and as I have a solar diverter one reading can be 245 watts and the next 2450 watts, as the diverter pulses surplus power to the immersion heater.
What is needed is a monitor that takes many readings over a set period and then averages them out.

My current meter has 4 tariffs and I can't see a smart meter dealing with that. I have a weekday tariff, a evening and weekend tariff, a night tariff and a off-peak tariff. If you add an export tariff to that, so you only got paid what you exported it would never work.
Nice idea though, as I wold love to know how much I export.

I guess if we knew how much we exported it would make it easier to consider battery storage, but as I divert 1.2MWh to hot water and night storage I consider batteries would be a waste of time for me as I have no surplus.



SolarEdge SE4000 inverter, 16 x Romag powerglaz 235W panels. South facing at 30 degree angle in Surrey just East of Gatwick and under the flight path.

ESS AC coupled system using a Victron Multiplus 24V/1600VA Inverter/Charger - 8.16kW Trojan 875 battery bank.

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#10 Oct. 5, 2017 08:28:30

bhommels
Registered: 2011-10-03
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Smart meters

Hi BackYardSolar,
I am sure there are commercial offerings that can do what you want. Otherwise, the kit and people available at openenergymonitor.org could be tailored to suit your needs.

From my DIY/openenergy.org monitor, the export from my 2.88 kWp PV array was ~75% annually. This dropped to 42% after installing an immersion controller on my traditional 100 litre hot water tank. After upgrading to a 210 litre heat store, this dropped further to 19%. Quite far from zero, and I don't think upgrading further is practical, or economically viable. Depending on your hot water tank configuration, the same might apply to you….

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