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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 $1 billion in assets under management (as of August 2020). Founder Ron Pernick is also the co-producer of gridCONNEXT (an annual conference focused on grid innovation and modernization) and co-author of two books, including The Clean Tech Revolution (HarperCollins, 2007), the first book to chronicle the growth and investment opportunity of the clean-tech market.


Ron Pernick's picture


by Ron Pernick

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

As we reported last quarter, Covid-19 and the resulting pandemic brought the stock market – and the entire global economy – to its knees (with all Nasdaq-Clean Edge stock indexes down double digits during the first quarter). What a difference a quarter makes. During Q2, while the coronavirus continued to wreak havoc on the health of individuals and economies, we saw a significant stock-market market rebound, with U.S.-listed clean energy (spanning renewables, electrified transportation, storage, energy efficiency, and power conversion), weathering the impacts of coronavirus better than most ot

Stock Indexes

Nasdaq-Clean Edge stock indexes cover U.S. and global clean energy, water, and grid infrastructure markets. As of July 7, 2020, First Trust ETFs tracking the indexes equaled more than $900 million 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 2020 Index Performance

Clean Edge Stock Indexes