Bought 2.5KW system - upgrade or modify?

deegs

Hey folks, just renovating an old farmhouse which has 20 tube solar thermal and a 300l Joule solar water tank (not yet comissioned). I got great advice from the last post which suggested not going off grid.
I have just bought a 2.5kw system incl 8 310 panels, solis 2500 inverter, eddi and firemans switch. It was a good deal locally.
And I am wondering what to do with it.

What would you do?
1) Run the PV panel as is tied into the grid.
2) Add more panels on a new inverter
3) Add more panels and upgrade inverter to take both

At this point I'm also thinking no battery.

Buffman

What's your final objective with the house? To have as much solar as possible?

I'd be inclined to use what you have as otherwise what was the point in buying it?

I don't think an eddi and solar thermal working together will be very cost efficient for you depending on what you paid. Also, now that we have FIT the economics of an eddi are not as attractive, it might be worth more to you to sell it on and export any excess for FIT.

310W panels are considered a bit outdated now, grand if you have plenty of space for them, but if you're stuck for space the newer 400+W might have been better. You might find it difficult to source the same size panels if trying to expand and mount them all together in the same array.

If you're trying to 'max out' your NC6 allowance and definitely don't want a battery and the roof size/layout allows, then probably the cheapest way is to have another 3kW grid-tied system, the two systems will work away independently of each other.