madmurg:
That is correct in the uk you get the feed in tarriff which is 43p
Now 21p for new signups.
madmurg:
so if i use the surplus power that I am not using to heat my water it will save me on my gas bill which i currently use to heat my water. doing it this way will give me free hot water.
Are you sure? How much gas would you use to heat a tank of water? There's a fair chance it would be cheaper to heat the water with gas and sell the electric from the PV back to the grid for more than the gas would cost. Also what happens when you don;t want a tank of water, you're not really saving gas, you're just wasting the electricity produced by the PV for no reason. Suppose you could factor this in with timers and stats in the right places.
Also, as above, are you sure you want a phase angle sensor? What meters have you got on the PV? Some of them have inputs and outputs for just this sort of thing.