Solar cell breaks efficiency record

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I checked - it's 7 hours not 8

Where I live, we get an average of 7 hours of sunlight per day. A typical year has 2540 hours of sunlight out of a potential of 4465 hours between sun-up and sun-down. That moves the break-even point to 3.5 years.

I was looking at the ROI to replace electricity from the grid. If it's too expensive, it's not viable. I have lots of 100 year-old elm trees providing shade and I don't need air conditioning. As with most households, there is a base demand for electricity, especially during the day. Solar could help provide for computer, TV, lights, etc. Larger appliances would need to draw from the grid.

The energy required to build a solar cell must be included in the purchase price otherwise the manufacturer would not stay in business.

Posted by: archerjoe   Posted on: 12/08/06 You are currently: a Guest | Members login | Terms of Use

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