Q: How can one of the biggest TVs on the market also be one of the most energy efficient?

A: Lasers!

Mitsubishi’s 75-inch LaserVue DLP TV was recently given the Most Efficient Energy STAR designation for 2012 for TVs 55-inches or larger—and 75 is a lot larger than 55.

In case you hadn’t heard, the LaserVue TVs use a laser-based light source rather an a traditional projection lamp (or LEDs or CCFLs used by LCD TVs). Because of its efficient light engine, it operates as less than 85 watts. Current Energy STAR 5.3 requirement is 108 watts.

Beside using only a trickle of power, the model L75-A94 delivers rich, deep colors, offers 120 Hz video process, a full suite of smart TV streaming media features, built-in Wi-Fi, ISF video adjustments and active-shutter glasses 3D TV capability.

While it’s not a flat panel TV (it’s 15-inches deep), it’s priced competitively for its size, so if you’ve got the space for it, this rear projection DLP is a good option for family rooms and home theaters.

In fact, you can find it on Amazon now for $4,549 (sold by Mitsubishi). Another thing about the laser lamp—it should essentially last forever.

Grant Clauser - Technology and Web Editor, Electronic House

Grant Clauser has been covering home electronics for more than 10 years with editorial roles in several consumer and trade magazines. He's done ISF-level damage to hundreds of reviewed products and has had audio training from Home Acoustics Alliance and Sencore. He's also the author of the book The Trouble with Rivers. Follow him on Twitter @geclauser.