With so much hype surrounding energy stocks out there, it can be difficult for investors to sort through the noise and extract meaningful information. To that end, Fool.com analyst Jason Moser talks about the fundamental points to focus on when looking at Clean Energy Fuels (NASDAQ: CLNE), a company for which Investors should look at trends of continuing adoption of its technology. The trucking industry and fleet vehicles have been embracing natural gas as an alternative fuel, but if another fuel source becomes popular and the demand for Clean Energy's services declines, the company could suffer.

State governments and local municipalities have initiated conversions of their fleets to use natural gas, and investors should look for signs that natural gas will remain sustainable as an alternative fuel. But investors need to remember: Natural gas is a commodity. The price is cyclical and volatile. While natural gas is very cheap and readily available today, that's not to say it can't get more expensive down the road -- and if it does, demand for natural gas vehicles will weaken and Clean Energy Fuels could face setbacks.

See more in the following video.

Austin Smith owns shares of General Motors and Ford. Jason Moser has no positions in the stocks mentioned above. The Motley Fool owns shares of Clean Energy Fuels, Cummins, Ford, and Westport Innovations. Motley Fool newsletter services recommend Clean Energy Fuels, Cummins, Ford, General Motors, and Westport Innovations. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.