Best answer by TransparentView original
Can you supply a three phase smart meter?
I have a three phase supply to my house. All phases are in use. One phase for ground source heatpump the other two provide power and light. Can you supply a three phase smart meter?
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Updated on 07/03/23 by Emmanuelle_OVO:
Do OVO offer 3 phase smart meters?
3 phase (aka polyphase) installations in domestic properties are few and far between, so it's a minority of meter engineers across the country that have the skills required to complete these installations. There are also some technical challenges in making sure your job is allocated to an engineer with these skills but we are just as keen as you are to have Smart available for these sites ASAP, so if you would like to take part in this beta stage release, please consider the steps below:
From the start of May 2023, if you have a single rate 3 phase meter (i.e. not Economy 7 / 2-rate etc.) we would encourage you to book a smart meter appointment as normal online or over the phone on 0330 303 5063. (Please do not attempt to book sooner than May unless you have been contacted.)
This will then go through to a specialist team who will validate that it is single rate job and that an 3 phase engineer is available in your region. If this is the case, they will re-book your appointment with the right engineer. (So please bear in mind your appointment date/time will likely change, but we'll try to keep it the same where possible.)
Unfortunately, if you have a 2-rate meter or are not in an area covered by our current crop of 3 phase skilled engineers, you will need to continue with your heritage meter. We know this will be frustrating, so we are sorry about that, we are working to expand our coverage and by you flagging your interest to us, you are helping us shape where and when that coverage develops. - thank you!
OVO member but not got a smart meter yet? - Book today!
Interested but not yet an OVO member? - Check out our plans!
I read the topic and responses with disappointment. OVO cannot fit 3-phase smart meters. The work-around is either downgrading to a single-phase supply or having 3 separate single-phase meters for each of the 3 phases!
In another property my supply is from another provider. I have a single meter (Alster A1140); it is a smart meter, its has economy 7 on at all phases.
Why cannot OVO provide one like this?
Tis a good question,
@MARGARETMAVIS - have a look at Transparent’s ‘best answer’ at the top. It’s not something we can change directly at the moment.
To discus supply downgrade options and costs, give us a call: 0330 303 5063
do ovo offer a 3 phase supply with economy 7 (or similar) - and how long would it take to get a meter installed on a new supply
@boulterc99 and welcome to the Forum.
At this time OVO don’t yet have 3-phase Smart Meters approved for installation, so the answer to your question depends on whether you are happy with a “traditional” meter.
There’s a basic Tutorial on single/three phase supplies here, which doesn’t go into great technical depth.
And there are a few other discussion Topics which raise issues of 3-phase connection in greater detail. This one about the requirement for vector-sum metering if you wish to export back to the grid is worthwhile reading.
@Transparent smart meter is a nice to have, more interested in Economy 7 with 3 phase so i can recharge my batteries at night.
OK, so if you’re happy with a traditional meter at the moment, then the next question is whether OVO have yet obtained a licence from Ofgem to install meters on new supplies.
This process is somewhat different to changing a meter on an existing supply and requires liaison with the regional Distribution Network Operator (DNO) and ECOES, the national meter database.
New feed meter installations used to be the province of the Big-6 Energy Suppliers, although a number of private companies are also now approved to do this work on new estates. OVO became the 3rd largest Supplier a year ago, but I haven’t yet seen any announcement that they are authorised to do new installs.
Let’s ask the Moderator,
@Tim_OVO, if he can find this out for you.
we have a single phase (via Octopus Energy) temporary supply for our new build but getting them to commit a date for installing a 3 phase meter is impossible hence looking elsewhere
That existing meter on the temporary supply might make all the difference!
I have experience as a self-builder, so I appreciate what you’re up against.
And please complete your Forum Profile page. It gives us basic background details such as your geographical area. Thanks.
in line answers
OK. So we need
@Tim_OVO to run this past a Meter Installs Manager tomorrow. The issue here is whether the DNO is prepared to install that new 3-phase cable and leave it terminated with their Service Fuse block.
If so, then there might not be a problem. Your site-meter effectively has an MPAN number because of the existing single-phase connection. So an OVO Engineer could “change” one meter for another, albeit they were physically connected to different cables. That shouldn’t be any difficulty for ECOES.
The remaining issue is to arrange for the OVO Engineer to arrive on site on the designated day for your switch from Octopus to OVO.
my understanding is that ssen would leave it terminated with their fuse block as they did for the temporary supply.
Some great info being shared here. Thanks for posting,
@boulterc99 and for the export support @Transparent
I’ve taken the info below from a guide I posted last week on 3 phase supplies, here.
The process for upgrading your supply to three phase
The booking with us is a 20 working day appointment, and our engineer or engineer contractor SMS may contact you directly to change for another date once they receive the booking. An electrician may also be required to rewire your consumer unit once the new meter has been installed, as we won't do this.
@boulterc99 . You’ll notice that @Tim_OVO has moved our discussion into another Forum Topic where others are more likely to find it.
Having re-read what you posted yesterday, I note that you haven’t yet told us if you have aspirations to export energy back to the grid. This would be useful information for the OVO Meter Installs Team to know as they assess your request.
@Transparent @Tim_OVO i have no plans to export to the grid, I will be having 7KW of solar and a tesla battery but an all electric house with various load heavy devices `(eg Lift, GSHP)
I expect to consume all we generate and more.
But the Tesla battery will still have a grid-connection and therefore a G98 export certificate.
As it is presumably going to be connected to only one of your 3-phases, this is relevant to the OVO specifier. The meter must have export registers, even if they only record zero!
As for your 7kW solar PV, is this feeding a separate off-grid battery (as I have), or is this also going to be grid-connected?
If the 7kW is grid-connected and spread across 2 phases (two inverters), then it too can be approved to G98, provided that those two phases are not the same as the Tesla Powerwall is already on.
However, the moment that there is the possibility of your grid-connected devices being able to export more than 3.68kW per phase (16A), then you need the higher-level G99 approval from SSEN. This applies even if you never actually export any power.
Please ask if you’d like further clarification of this.
Spirit energy who are doing the PV and Battery config are applying for a G99 connection which SSEN have suggested
they have suggested “a SolarEdge 7k 3phase inverter that will balance the power generation out. We also have 1 no' Tesla PW2 battery storage unit to go in, this will be connected to L1 as
the Tesla system only supports delivering power to 1 phase. A net/vector metering arrangement would effectively see the customer benefiting on all phases though.”
SSEN have suggested they are happy with this.
Thanks for that
@boulterc99 - it sounds like you are in good hands.
I’m unsurprised that SSEN are happy with the proposals. Their main concern would be the possibility of substation losses due to phase-imbalance. Your SolarEdge inverter will avoid that likelihood due to being 3-phase.
The Distribution Network Operators are working under a revenue-constraint strategy called RIIO-ED1, imposed on them by Ofgem. Reducing system-losses is a key element of the programme, and any threat to the shareholders’ dividends is a sure way to encourage compliance!
I have some good news there actually. OVO is planning to offer 3-Phase SMETS2 Smart Meters and have recently been looking for members interested in getting one. For now, this doesn’t include Economy 7 (which will likely come later), but if this floats your boat, please feel free to chat with
@Jess_OVO or @Tim_OVO . :)
No worries. Tim and Jess are not just any old minions. They’re minions with scary ModPowers and some other neat tricks that they never reveal to even this evil genius who stands before you.
I should probably mention the obvious disclaimer though, just to be safe.
Three-Phase SMETS2 Smart Meters have only recently been approved by DCC and right now OVO is still testing them out as a sort of Trial Project. As with all of OVO’s Trials, this one should be considered to be in a BETA status right now. So it is very much possible that things won’t be perfect and could break at anytime. Your feedback is definitely welcomed if that happens though! There’s a chance for example that comms might drop out sometimes or the readings might not always come in properly - but feedback from Trial Sites is what will really make sure that OVO can get this one polished up before rolling it out to everyone else.
I know it sounds boring, but it’s something I do have to mention even as a forum volunteer. Otherwise I risk getting yelled at by those big scary legal eagles in OVO’s legal team. And you probably don’t want that.
can you add me to the list if possible? Just throwing my hat in for the 3 phase smart meter journey :)