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发表于 2014-5-31 21:08:19
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xiwu 发表于 2013-8-31 00:04
谢谢, 请问如何算出来?
For example:
3kw solar system can generate about 12kwh/day on average
Normally, you will use about 5kwh electricity by ourselves during daytime and sell others back to the grid.
Hence, the daily profit is 5kwh*35c/kwh(electricity’s price including GST) +7kwh*8c/kwh(solar feed-in-tariff rebate from AGL) =$2.2/day
The benefit per year is about $800. You spend $3500 for this system, It means, you can get all this money back in about 4.5 years.
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