Clean Energy Investment Google Gadget uses NASDAQ Clean Edge U.S. Index (CLEN) to track the Clean Energy sector. The NASDAQ Clean Edge U.S. Liquid Series Fund is designed to reflect to the price and yield performance of the index upon which it is based. The NASDAQ Clean Edge U.S. Liquid Series Index (Nasdaq:CELS), developed jointly by NASDAQ and Clean Edge, is designed to track the performance of clean-energy companies that are publicly traded in the U.S. It includes companies engaged in the manufacturing, development, distribution and installation of emerging clean-energy technologies such as solar photovoltaics, biofuels and advanced batteries, and covers Renewable Fuels and Electricity Generation, Energy Storage & Conversion, Energy Intelligence, and Advanced Energy-Related Materials.
