Here are some of the ETFs top holdings: Hanergy Thin Film Power Group China, 11.05% SunEdison (SUNE) 9.01% SolarCity (SCTY) 6.97% The MarketVectors Solar Energy ETF The MarketVectors Solar Energy ETF (KWT) invests in public companies that derive at least 66% of their revenues from solar power, as well as associated products and services. KWT is much smaller thanTAN, with an assets base of around $20 million. Meanwhile, its a little more diversified, with top tenholdings accounting for 58% of the fund. US stocks account for 34% of the holdings, while Chinese stocks account for 32.8%. The ETF has an expense ratio of 0.66%. With an asset base of $128 million, its the second-biggest ETF in the alternative energy category.While the expense ratio of 0.70% is similar to TANs, this ETF is much more diversified, with only 24% of its assets in its top ten holdings. US stocks account for 75%.
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Bionic leaf: Researchers use bacteria to convert solar energy into liquid fuel — ScienceDaily

The original article was written by Elizabeth Cooney. Note: Materials may be edited for content and length. Journal Reference: Joseph P. Torella, Christopher J. Gagliardi, Janice S. Chen, D. Kwabena Bediako, Brendan Colon, Jeffery C.
For the original version including any supplementary images or video, visit http://www.sciencedaily.com/releases/2015/02/150209161423.htm