In our power consumption tests, the 55LM6700 used an average of 67 watts with energy-saving features turned off, and 48 watts when energy-saving features set to minimum, which kept the picture very watchable and only slightly dimmed the screen. This is very good for a 55-inch HDTV, and comparable to the 46-inch, LED-based Sony KDL-46EX620 ($809.99, 3.5 stars). Because the power consumption is so reasonable with a sufficiently bright picture, this set earns our GreenTech approval.