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  #11  
Old 04-06-2010, 03:04 PM
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My bro has them n he saves approx 40% on his bills.
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  #12  
Old 04-06-2010, 05:08 PM
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I put a 1.4kw system on the roof in March this year. I was on the tail-end of the $8000 grant, and was about to can the whole idea when I realised the rise in the AUD from approx 75 to approx 95 cents had reduced the cost of solar by almost a third.

So, I ended up paying $2500 for a system with 7 German-made 200w panels and a sunny boy inverter. ($10500 before the rebate, was quoted $14k mid last year)

I noted the figures on the inverter this morning and we've had 534kw/h out of it since the end of March, with nearly 1000 hours of sunlight, which equates to about $100 worth of power in a couple of months. 'Sunlight hours' includes morning & late afternoon when you get bugger all.

We're feeding stuff all power back into the grid, so fingers crossed for a gross tariff credit. THAT would be worth it.

We're on track for about $600/yr worth of free power, which means the system will have paid for itself in 4 years. It's also a good hedge against rising power costs.

We costed a slightly bigger system but it was another grand for one more panel, which is another 2 more years to pay off. Not worth it - I'll wait to see whether they bring in more rebates on extending existing systems, and then I'll go to 3.5kw.

By the way, our power bills range from $300 in winter to $600 in summer.
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  #13  
Old 04-06-2010, 05:10 PM
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PS avoid cheap 'n' nasty panels. You want something which will last.
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  #14  
Old 04-06-2010, 06:37 PM
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How did your panels Go in the Hail storm ?
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  #15  
Old 04-06-2010, 07:25 PM
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Quote:
Originally Posted by pete gopal View Post
hard to compare though as your grandma probably pays the lower pensioner rate...

My Mrs' Grandparents are running solar and MADE $12 on their last power bill.
The government are trying to dock their pension for it, despite their $2k outlay for it after the rebate.

Wankers.

And just for those that don't get the whole KW and KWh business.
1 KW is 4 amps. Your kettle draws about 10 amps and each downlight/light draws about .25 of an amp.
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Balls.
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  #16  
Old 04-06-2010, 08:28 PM
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Quote:
Originally Posted by NVRENUF View Post
How did your panels Go in the Hail storm ?
Still in one piece, fortunately.
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  #17  
Old 05-06-2010, 10:57 AM
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Hi NVRENUF

My 1kW system was installed Oct 2008. It cost about $2,200 all up -including upgrading the meter.
It generates about 1540kWh over a year. about what the installer estimated. would be higher without a bit of tree cover and facing north-west not north.
Of that it saves ~16 cents per kWh when the power is used, or from July 2010 the new buy-back tariff is ~45 cents per unit if sold back to Synergy.
If you are out all day and using very low power then most of the generated power is sold at 45c per kWh . If you are are home in daylight hours and running air con then the generated power saves only 16c per kWh.
1540 times 16 = $246 per year
1540 times 45 = $693 per year
Investing $2200 to save $246 per year would appeal to someone who needs to be kept out of the stock market.
Investing $2200 to save $693 per year is a fair business proposition.
So, it depends on how much of your generation is consumed or available for sale at the buy-back tariff.
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