Wednesday, June 19, 2013

A little bit of purchasing action

Since yesterday three of my four solar component decisions have changed, or changed supplier. I've locked one in as I just ordered:

1 / SMA Sunny Boy 4000TL panel inverter;
1 / SMA Sunny Island 6.0H inverter/charger; and
1 / SMA Sunny Remote Control

from the friendly folks at TCK Solar for the grand total of $5,797 inc. GST. They're nearby in Brunswick, so I'll save a little on shipping by picking them up myself.

Next up I think I'll pull the trigger on the solar panels once I have a chat to the installer about what I'll need to mount them.

The other change is that I think I'm going to go with a different battery. The supplier I've been talking to about these Surrettes has now done an about face and reckons they're no good for full-time off-grid use - or more accurately, they won't last as long as they should in this use case and that they're more suited to a weekender.

That's OK - I was starting to lean in another direction; using 12 x 6V 1600Ah Exide batteries in a single string instead, rather than three parallel strings of 8 x 600Ah Surrettes. Easier to set up, and fewer cells to go bad even if it does mean I'm 200Ah poorer. But hey, I'd probably lose that in the additional wiring anyway.

So it seems he's talked himself out of a $15,000 sale while trying to talk me into spending $25,000.

My next dilemma is going to be how and where to take delivery of 12 x 120kg batteries!

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