PV payback time and whether to upgrade

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Re: PV payback time and whether to upgrade

Postby Tracker » Sat Oct 25, 2014 7:03 am

We use about 5.5kWh a day on average BTW, so we're fairly low users.

Are you sure... :?:

That is a very low figure and half what low users that I know consume...

Or are you connected as NET export... I suspect not from the suggested export figure and PV size...

With that super low consumption, I would be considering going off grid, or planning for it...
..
.
Retired Engineer and keen PV experimenter - Always ready to learn and share.
2 x CMS2000 (fan cooled) GCI and SE 170W panels
1.7kW First Solar/Outback Island circuit - Peak Replacement Power
Governments won't save the world :-) They will just TAX it :-(
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Re: PV payback time and whether to upgrade

Postby ads » Sat Oct 25, 2014 12:28 pm

Yes I'm sure. No point in going off grid until the FIT ends, I may reconsider then.
3.12kW grid connect PV system (REC 260s, SMA 1700). Half N, half tilted west
Solahart thermosiphon solar hot water, 180L
14,000L rainwater tank
Greyflow grey water system
Located near Fremantle, WA
Blog: http://sustainaburb.blogspot.com.au/
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Re: PV payback time and whether to upgrade

Postby karlajensen » Sat Oct 25, 2014 8:39 pm

All good, how's she running?
8E + 8W + 8Nth Garage CMS2000-1 with ~4500W in 3 strings of 8.
Fronius Galvo 3.0 inverter with ~6.6kW panels
12x ZNShine + 12x 180W Solarfuns both NW + ZNShine 12x190 facing SE.
Edwards Solar Hot water


Luck Favours the well prepared.
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Re: PV payback time and whether to upgrade

Postby ads » Mon Oct 27, 2014 11:14 am

Hi Karl

Yes, all good. We averaged 11.5kWh generation for our first week. This compares to 5.4kWh October average with our 1.1kW system. So, I guess there's some clipping in there and an unusually cloudy week too. We hit 1710w on sunny afternoons. Looking forward to a sunny summer. Thanks again for the advice.
3.12kW grid connect PV system (REC 260s, SMA 1700). Half N, half tilted west
Solahart thermosiphon solar hot water, 180L
14,000L rainwater tank
Greyflow grey water system
Located near Fremantle, WA
Blog: http://sustainaburb.blogspot.com.au/
ads
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Posts: 33
Joined: Thu Sep 23, 2010 3:43 pm
Location: near Fremantle, WA

Re: PV payback time and whether to upgrade

Postby ads » Wed Oct 28, 2015 3:51 pm

It's been a year since the upgrade. We're chuffed with the result, $612 credit this year. To save me writing the details twice here is a link that gives more detailed info:

http://sustainaburb.blogspot.com.au/2015/10/pv-upgrade-year-1-results.html
3.12kW grid connect PV system (REC 260s, SMA 1700). Half N, half tilted west
Solahart thermosiphon solar hot water, 180L
14,000L rainwater tank
Greyflow grey water system
Located near Fremantle, WA
Blog: http://sustainaburb.blogspot.com.au/
ads
Solar Fanatic
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Posts: 33
Joined: Thu Sep 23, 2010 3:43 pm
Location: near Fremantle, WA

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