When the secondary market for renewable identification numbers, the designation given to ethanol credits, took off earlier this year, it crushed refining stocks. Many wondered if the soaring ethanol credits would hurt consumers at the gas pump. Almost no one wondered who was on the other side of the soaring costs, benefiting as their credits jumped in value, if only for a short time. In this video, Fool.com contributor Aimee Duffy takes a look at how Kinder Morgan (NYSE:KMI) profits from the RINsanity.

Fool contributor Aimee Duffy has no position in any stocks mentioned. If you have the energy, follow her on Twitter, where she goes by @TMFDuffy.

The Motley Fool recommends and owns shares of Kinder Morgan. Try any of our Foolish newsletter services free for 30 days. We Fools may not 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.