Adam Breeden/ZDNETDid you know that a modern TV uses significantly less energy than a TV that’s a decade old? Maybe that shouldn’t be a surprise, considering how much more power-efficient today’s display panels are. According to Perch Energy, the average power consumption of an old TV runs around $54 per year in energy costs. Because LED-backlit TVs and OLEDs consume less power than traditional LCD screens, newer models cost about $32 annually. Also: How to clear the cache on your TV (and why it’s more important than you think)In large part, the bigger your screen size, the more power your TV requires. But there are ways to attenuate your TV’s power consumption every time you turn it on. Here are some settings you can change to save more money on your next electricity bill. Even if it’s just tens of dollars that you’re ultimately saving, it’s still a little less money coming out of your pocket, and that’s the goal. More