Solar cells being developed today have a conversion efficiency rate of almost 20%.

今天，电转化率接近20%的太阳能电池正在开发之中。

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A little over a decade ago, the best photovoltaic efficiency, or sunlight conversion into electricity, was 10 percent, and now it can reach 40 percent.

大约十年前，光电效率(即光能转换成电能的转换率)只有10%，而现在已经能达到40%。

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A predicted conversion efficiency limitation of 20% for silicon solar cells in practical devices was made by photovoltaic specialists.

光伏界的专家们曾经认为硅太阳电池转换效率在实际器件上的极限为20%。

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SunPower boasts the highest efficiency among all players in the solar industry and has developed a Gen 3 cell technology, which has a conversion efficiency greater than 23%.

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In the lab Cigs has a maximum solar conversion efficiency of 20.2%, better than the 16.5% of a thin-film technology that kicks the pants off the traditional crystalline silicon panels on price per watt of capacity.

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Solar Junction recently proved out a solar cell with a 44% conversion efficiency.

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