Clean Edge, Inc., founded in 2000, serves corporate, utility, and financial clients working to transition to a clean-energy economy. The firm is a clean-tech stock indexing pioneer (with multiple stock indexes tracking clean energy, transportation, water, and the grid) and co-produces the annual gridCONNEXT conference (convening stakeholders building a modern 21st century grid). Founder Ron Pernick, who literally wrote the book on clean-tech business & innovation (The Clean Tech Revolution, HarperCollins, 2007), works on additional select projects to forward large-scale clean-tech adoption.


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Welcome to our quarterly overview of stock index performance and key developments impacting the state of clean tech.

Nasdaq-Clean Edge Stock Index Performance:

During Q1 2019, Clean Edge’s four major stock indexes were all up. On a total return basis, CELS (U.S. clean energy) was up 14.10%, QGRD (global smart grid infrastructure) was up 12.20%, GWE (global wind) was up 14.68%, and HHO (U.S. water) increased 16.47%, compared to the S&P 500’s 13.65% increase during the quarter. Over the past 12 months (total return basis through the end of March), results were more mixed, with CELS up 4.20%, QGRD down -10.02%, GWE up 1.67%, and HHO up 8.50%... 

Stock Indexes

Clean Edge stock indexes cover diverse sectors spanning clean energy, transportation, storage, grid, and water. At the end of March 2019, ETFs tracking Nasdaq-Clean Edge indexes equaled more than $500 million in assets under management (AUM).

  • CELS: U.S.-listed clean-energy companies
  • GWE: Global wind industry firms
  • HHO: U.S.-listed potable water and wastewater market companies
  • QGRD: Global smart grid and grid infrastructure firms 

Clean Edge Stock Indexes