Investors Are Learning That Clean Tech Pays

By Matthew A. Winkler

The American companies most reliant on embracing green technology are outperforming every broad measure of the stock market, delivering a greater return last year than all but two (Russia and Greece) of the world’s 94 leading equity indexes.

These are the 92 publicly traded firms with at least 10% of their revenues derived from clean energy, energy efficiency or clean technology, according to data compiled by Bloomberg New Energy Finance. They’re proving that the threat of climate change is also an investor’s opportunity.

Not since 2013 has there been a year when the S&P 500 Index and Russell 3000 gained 31%. Yet this exceptional result didn’t come close to the performance of the clean companies, with their combined total return (income plus appreciation) of 40%. Together they were worth $946 billion last year, more than triple their market capitalization at the end of 2010. Whether the investment period is 2, 5 or 10 years, the return is superior by margins of 12%, 37% and 112% for clean companies.

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