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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 $5 billion in assets under management (as of January 2022).


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Q4 2021 Review

by Ron Pernick

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

In the new apocalyptic dark comedy “Don’t Look Up,” a power-hungry, science-denying president (played impeccably by Meryl Streep), a messianic tech leader, and a supportive, fact-denying media exhort people to “don’t look up,” in hopes that their followers will blindly ignore the impending doom of a comet barreling straight for Earth. An allegory for climate change, “Don’t Look Up” [spoiler alert] takes a grim view of humankind’s ability to save itself (even with Leonardo DiCaprio’s and Jennifer Lawrence’s characters doing their darndest to motivate code-red alert action). While my family was depressed by the movie (not exactly uplifting Xmas fare),  I also walked away from the film inspired to work even more aggressively to help forward the energy transition. As I wrote in last quarter’s newsletter, we are about halfway through a 50-year transition cycle, and 2021 proved that...


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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 January 2022, First Trust ETFs tracking the indexes equaled more than $5 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 

Q4 2021 Index Performance

Clean Edge Stock Indexes