Based on the aggregated intelligence of 180,000-plus investors participating in Motley Fool CAPS, the Fool's free investing community, alternative-fuel provider Clean Energy Fuels (CLNE -1.75%) has earned a respected four-star ranking.

With that in mind, let's take a closer look at Clean Energy and see what CAPS investors are saying about the stock right now.

Clean Energy facts

Headquarters (Founded)

Seal Beach, Calif. (2001)

Market Cap

$1.2 billion

Industry

Oil and gas refining and marketing

Trailing-12-Month Revenue

$321.1 million

Management

Co-Founder/CEO Andrew Littlefair

CFO Richard Wheeler

Return on Equity (Average, Past 3 Years)

(8.9%)

Cash/Debt

$178.7 million / $338.0 million

Competitors

Atlas Copco
Chesapeake Energy (CHKA.Q)
Mansfield Oil

Sources: S&P Capital IQ and Motley Fool CAPS.

On CAPS, 93% of the 198 members who have rated Clean Energy believe the stock will outperform the S&P 500 going forward.

A couple of months ago, one of those Fools, johnstrobel, succinctly summed up the bull case of our community:

I believe alternative fuels could be the boom of the next decade. [Clean Energy] is developing the America's Natural Gas Highway to provide less expensive fuel options, primarily for trucks and transportation. Other companies like [Westport Innovations (WPRT 0.45%) and [Cummins (CMI -0.25%)], which I also own in my investment portfolio have natural gas engines available. Profitability of the company has been sporadic but revenues are increasing and if the ANGH develops as anticipated, it should be very profitable and the stock could be worth $30/share by 2014.

If you want market-thumping returns, you need to put together the best portfolio you can. Of course, despite a strong four-star rating, Clean Energy may not be your top choice.

We've found another energy play we are incredibly excited about -- excited enough to dub it "The Only Energy Stock You'll Ever Need." We have compiled a special free report for investors to uncover this stock today. The report is 100% free, but it won't be here forever, so click here to access it now.

Want to see how well (or not so well) the stocks in this series are performing? Follow the TrackPoisedTo CAPS account.