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Clean Edge, Inc. is a developer and publisher of thematic stock indexes tracking clean energy, transportation, water, and the grid. The firm’s first index, the Nasdaq Clean Edge Green Energy Index (CELS), was launched with Nasdaq in 2006. Financial products tracking the firm’s indexes and universes exceed $4 billion in assets under management (as of March 2021).


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Q3 2021 Review

by Ron Pernick

Quarterly overview of stock index performance and the top trends impacting the state of clean tech.

Supply disruptions and staffing shortages continued to loom large during the third quarter of 2021. While the economy proved remarkably resilient in the face of an unprecedented global pandemic, a range of commodity shortages (see Quarterly Insight: Price Volatility is Embedded in Fossil Fuels below) have hit Europe particularly hard. In the U.S., political disagreement and gamesmanship continued to leave the country without passage of either the infrastructure bill or Build Back Better plan championed by President Biden, both centerpieces of his economic agenda.

Against this backdrop, indexes in our coverage remained relatively flat during the third quarter. The S&P 500 was up 0.58% while the traditional...


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Published by NASDAQ in collaboration with Clean Edge, Enabling the Energy Transition takes a look at corporate, investor, and government net-zero and clean-energy initiatives that are driving a new era in the energy transition.

Stock Indexes

Nasdaq-Clean Edge stock indexes cover U.S. and global clean energy, water, and grid infrastructure markets. As of June 2021, First Trust ETFs tracking the indexes equaled more than than $4 billion in AUM.

  • CELS: U.S. clean energy 
  • GWE: Global wind  
  • HHO: U.S. potable water and wastewater 
  • QGRD: Global smart grid and grid infrastructure 

Q3 2021 Index Performance

Clean Edge Stock Indexes