The following video is part of our "Motley Fool Conversations" series, in which energy editor/analyst Joel South discusses topics across the investing world.

Oil prices have been on a free fall this past week. Between the Greek election and softening growth in China, economic uncertainty is causing a softening in the oil futures market. Supplies are reaching 20-year highs, and the market is starting to react to the building reserves. In this video, Joel talks about falling prices and what this means for energy investors. Watch below to hear about a few companies that could see their share price drop as oil prices decrease. 

With oil prices falling lately, large upstream producers are taking note because a decrease in margins and the risk they face. If oil stays deflated for a long period of time, energy firms can expect to receive a large bite out of their bottom lines. However, there is one company that's not susceptible to the cyclical swings inherent in the sector -- check out this free report to find about more about this outstanding investment: "The Only Energy Stock You'll Ever Need." Don't miss out on this limited-time offer and your opportunity to discover this under-the-radar company before the market does. Click here to access your report -- it's totally free.