The unit will come from a manufacturer called VPhase.... installed by a local company. hope it works.
Our house is totally heated by electricity (i.e. the Heat pump getting what it can from the Earth and from Sunboxes) and the heatpump and the associated pumps are all motors. As this is where the greatest saving can be found, I hope that we might get at least the 10% that is offered, and perhaps more if we tune it down to 220 volts AC. The voltage in our house is a consistent 248 volts, way above the norm of 230 volts AC. All the devices we have, apart from the oven would work just as well at 220 v, but using 10% less energy.
For people using Gas central heating, HW and cooking, the 10% saving is only of a smaller amount, the electricity they use for power and lighting. As our heating, DHW, cooking, lighting and power are all electric, 10% of a much larger amount seems to be worth going for.
It's possible partially, to decide what to regulate. We will not regulate or interfere with the PV roof (would be illegal because the meter is governed by OfGem), and we will not change the oven (would make it be slower to heat) - the main culprit that needs regulating is the heat pump which is 2/3 of the total house consumption annually! All the things on the general ring main (computer, TV, fridge, modem, printer, power tools etc) would work just as well, but consume less.
As usual, all results will be monitored and published.