Thread: My potential system....

If you have a dual MPPT inverter then I would split them 7/6 on each side of the roof.

We only have a 1.5kW system with a single MPPT inverter (8.4c feed-in tarriff in WA, so not worth it to fit more), and our options were NE and NW facing. Went the NE option, as less shading from trees.

So far we are happy, the system was generating 800W at 10 am this morning, and overall we are about covering our usage so far (in winter!).

Originally Posted by isuzurover

If you have a dual MPPT inverter then I would split them 7/6 on each side of the roof.

We only have a 1.5kW system with a single MPPT inverter (8.4c feed-in tarriff in WA, so not worth it to fit more), and our options were NE and NW facing. Went the NE option, as less shading from trees.

So far we are happy, the system was generating 800W at 10 am this morning, and overall we are about covering our usage so far (in winter!).

Thanks! Reckon that's what I'll do....along with fuelling up the Stihl!

PS - I have your GCLRO member card/name badge.....shall I mail it to you?

Originally Posted by Scallops

Thanks! Reckon that's what I'll do....along with fuelling up the Stihl!

PS - I have your GCLRO member card/name badge.....shall I mail it to you?

Cool - yes please! Wait till I pay the membership though

If a certain AULRO member refunds my money by monday as promised then I will transfer the funds then.

That's a good price Dan. I'm thinking of signing up to a 2kW system with the same inverter for $6200. Might have to give your guy a call.

Originally Posted by Scallops

I've chosen 13 X REC 245w Multi-Crystalline panels

In terms of square meters how much area does all that cover?

I have thought about solar electricity occasionally but I've already got a solar hot water and solar pool heater sitting up on the roof. Still have a bit of north facing real estate up on the roof I could use but I have no idea how much area is needed for something like 3 - 4 kw.

Good choice with the REC panels.. their specs are less rubbery than some. (Ask me what brand I've got !)

Mine is a Motech 4600 with 3 MPPT's, two used for 16 panels. Hope to get some more efficient panels later on for the 3rd imput and for 'afternoon sun'
Roof is 17 degrees, and faces exactly NE.
System starts producing just before sunrise, but pretty well dies after 3:30pm. Pity, as there's lots of useable sun around till 5:00 pm in summer.

I'd say utilise a split, try and go for NE / NW. Friend of mine has that, and with a 1.5kW setup is doing very well. Or set it up for winter sun-angles... you'll over-produce on a really bright summer's day.


Just check out what the standby power consumption is on your inverter.. Yes, they use power when the sun is hiding... Can vary a fair bit.

Originally Posted by Ferret

In terms of square meters how much area does all that cover?

I have thought about solar electricity occasionally but I've already got a solar hot water and solar pool heater sitting up on the roof. Still have a bit of north facing real estate up on the roof I could use but I have no idea how much area is needed for something like 3 - 4 kw.

I dunno - yet! But it's roughly 20 -30 square metres.

Originally Posted by WhiteD3

That's a good price Dan. I'm thinking of signing up to a 2kW system with the same inverter for $6200. Might have to give your guy a call.

My research led me to think so....glad I have a few believers in my choice ....went from novice to expert in 48 hours - that's my much ....now have to go to work this weekend and do some work!