Quote:
Originally Posted by xelasnave
Hi Peter you must get something on a wet day..May I ask how much your panels produce on a Sun less day..I was surprised that up at the main house they get 12 to 15 amps sometimes ( 12 volts) when over cast which surprised me.
Alex
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It varies...at this time of year a very wet an overcast day might see only 7kw produced for the whole day. Where as a cloudless day would see the PV system produce about 40Kw for the day.
The panels you get however can make a vast difference in low light conditions...we have some excellent LG panels on our north facing array, but our east facing panels are "Tier 1" panels which frankly are rubbish...My older but wiser advice is run a mile from anyone flogging "Tier 1" panels.
As far as the Power wall II goes, payback took only 3 years...it is configured to kick in during peak billing times (around 60 cents per Kw) hence our peak tariff is almost nil for most quarterly bills.