Energy efficiency is one of the easier ways to play the energy sector for investors who aren't sure what the future holds, or who may not want to dig deep to understand the ins and outs of biofuels, solar panel efficiency, or geothermal power works. One of the disadvantages of energy investing, compared with other sectors, has always been how intangible it is. You can't go out and inspect an oil field or a coal mine the way you can hold an iPhone in your hand or hang out at a Buffalo Wild Wings. When it comes to energy efficiency, however, you can walk into a Home Depot (NYSE:HD). In this video, contributor Aimee Duffy takes a look at the unique opportunity Home Depot can provide to energy investors.

Fool contributor Aimee Duffy has no position in any stocks mentioned. The Motley Fool recommends Bank of America, Buffalo Wild Wings, and Home Depot and owns shares of Bank of America and Buffalo Wild Wings. 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.