Best answer by Transparent
How very sensible
The UK Electricity Distribution Grid is suffering increased losses due to imbalances between the phases at sub-stations. This isn't helped by almost all our domestic housing stock having only single-phase supplies.
Compare this with Germany where it is expected that all houses should have a 3-phase supply.
Unfortunately the answer to your question isn't within the control of the domestic Energy Suppliers, like OVO.
All Smart Meters being installed in the UK are selected through a process managed by the Data Communications Company (DCC). They own the Smart Meter Network, and they alone can communicate with our Smart Meters using a proprietary encryption system. This is essential to prevent the UK's energy supply system being held to ransom by those with malicious intent.
DCC have, thus far, only commissioned single-phase Smart Meters to be joined to their Network.
I have written more extensively about Smart Meter installation elsewhere on the Forum.
Please post here again if you'd like further information or clarification. And please fill out your Forum Profile so that we can tailor responses more precisely to your circumstances.