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Grid-tie PV is a easy way to approach.
I had installed a simple set of 500W grid-tie PV on the roof of my house. In this summer, about 10% electricity reduction. To calculate the cost recovery period is about 17 years here in Taiwan. If you apply for government acquisition of the power, then you can recovery the cost in less than 10 years. But the government budget and the acquisition price is gradually reduced each year.
In long-term point of view, it is worth. at least environment friendly.
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