Surfing The Sustainable Investing L-Curve: A Noble Way To Lose Money?

 | Aug 27, 2013 12:30AM ET

Even if you’re the very model of a modern money manager, kitted out with a Sustainable Investing Officer and all, what would a bold plunge into a green investing model have done for your returns in recent years?

The divesters aren’t just against fossil-fuels. They also “advocate for,” as they would probably say, investments in alternative/sustainable/green/clean energy. Once they get the kinks out of wind and solar, they maintain that renewables are the wave of the future—where the big money will be made.

Harvard Vice President of Sustainable Investing Jameela Pedicini’s old boss, CalPERS chief investment officer Joe Dear, came to New York in March for the Wall Street Journal’s big, green ECOnomics conference, and he wasn’t bringing good news for green investors.

According to the Journal, Mr. Dear told the conferees that a $900 million CalPERS fund devoted to clean energy and technology (which started in 2007 with $460 million) has had an annualized return of minus 9.7% to date.

“We’re all familiar with the J-curve in private equity,” he said. “Well, for CalPERS, clean-tech investing has got an L-curve for ‘lose.’ Our experience is that this has been a noble way to lose money. And we’re not here to lose money. We have dialed back.”

Mr. Dear added that CalPERS may look again at clean-tech investing if the profits and returns are there, “but if it takes 12 years to get the money out, the internal rate of return is not going to very good, even if the investment is reasonably successful.”

Big institutional investors like CalPERS and Harvard Management Company can pursue an idea through channels not available to ordinary retail investors. They can buy into private equity and venture capital partnerships; set up separate accounts with expert, active managers to invest in public markets; and generally get access to the smartest, best-connected people in any niche.

But even if you’re just a civilian without those tools, you can still take a flyer in green investing. The divesters may be suspicious of capitalism, but the capitalists don’t take it personally. They’ll invent and sell a “sustainable” index fund just as readily as they’ll sell you a fossil-fuel ETF (like, say, Market Vector’s poetically named KOL which is a bet on the coal industry).

We found seven indexed ETFs which claim to track green energy stocks and which started up before 01 July 2007. There are some other newer ones, but we prefer to look at five-year returns. We can think of these funds as a proxy for the publicly investible green assets. With these, we could figure out how pure-hearted green investors would have done in the fiscal five-year period July, 2007 to June, 2012.