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Clean Edge has been at the forefront of tracking clean-tech markets since 2000. The company is a leading publisher of thematic research on clean energy, transportation, water, and the grid. It is a joint developer of and contributor to the Nasdaq Clean Edge Green Energy™ Index (CELS™), launched in partnership with Nasdaq in 2006. Other indexes include the Nasdaq OMX Clean Edge Smart Grid Infrastructure™ Index (QGRD™), the ISE Clean Edge Global Wind Energy™ Index (GWE™), and the ISE Clean Edge Water™ Index (HHO™).


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Q2 2023 Review

by Ron Pernick

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

This is a remarkable time for the growth of clean energy investments and deployment. In 2022, global energy transition investments reached a record high of $1.1 trillion (up from $849 million in 2021), matching investments in fossil fuel production for the first time ever, according to BloombergNEF. This year the International Energy Agency projects that global clean energy investments will be in the $1.7 trillion range. And whether you’re tracking solar PV installed, energy storage deployed, EVs shipped, or heat pumps delivered, 2022 marked new annual records.

Against this backdrop, year to date (YTD) through the end of June, all Nasdaq-Clean Edge indexes outperformed the IXE (Energy Select) index, which declined 5.45%. 


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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, transportation, water, and grid infrastructure markets. All tracking financial products of Nasdaq Clean Edge indexes exceed $4 billion in assets under management (as of July 11, 2023 based on FactSet data). 

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

Q2 2023 Index Performance

Clean Edge Stock Indexes