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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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Q2 2021 REVIEW

by Ron Pernick

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

The second quarter of 2021 will be remembered for several significant events in the energy transition (more on that topic below). As the United States and other large economies began to emerge from COVID-19 lockdowns, prospects for increasing economic growth supported strong total returns in the S&P 500, which rose 8.55%, and in the traditional energy-focused IXE index, which increased 11.11% on the expectation of higher fuel consumption. Among the Nasdaq-Clean Edge indexes, those with an emphasis on infrastructure also produced meaningful results. Prospective significant investments going into the electrical grid and water systems in the U.S. and elsewhere supported an 8.32% return in QGRD (global smart grid and grid infrastructure)...

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Published by NASDAQ in collaboration with Clean Edge, Clean Energy & Smart Grid Infrastructure describes the trends and developments currently driving the clean energy sector. 

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 


Q2 2021 Index Performance

Clean Edge Stock Indexes