February 03, 2013

Study: DVR, set-top box use most energy at home

The Natural Resources Defense Council says HD DVRs and HD set-top boxes together use more energy every year than a recent-model refrigerator. The problem? There's no real on/off switch or low-power mode.

 The Natural Resources Defense Council has ranked the biggest energy hogs in the home, and the thing that's gobbling up the most is probably not what you think: the pairing of your digital video recorder and set-top box.

The environmental monitoring group released a study today that says that a high-definition cable or satellite set-top box when combined with a high-definition DVR uses up 446 kilowatt hours per year. That's more than a new Energy Star rated 21 cubic-foot refrigerator, which uses 415 kWh per year, according to the NRDC's data.

The combination of an HD DVR and an HD cable or satellite box in a house wastes many hours of energy even when not in use, the group found. The study reports that it costs American consumers more in electricity bills per year when they're not using their DVR and set-top box than when they are: $2 billion a year versus $1 billion a year collectively.

The group estimates that there are 160 million set top boxes currently installed in U.S. homes, and together they emit 16 million metric tons of carbon dioxide every year.

Among the different types of set-tops the NRDC tested, streaming only devices (Roku, Apple TV), and standard-definition receivers consumed much less power than HD receivers and HD DVRs.

The problem, the NRDC says, is that many of these set-tops do not have a low-power mode, like a cell phone or a laptop. Hitting the "off" button will typically dim the clock or display, but will not actually turn the device off or even reduce a significant amount of power that it's using in "sleep mode."

 "We've improved the efficiency of all sorts of electronics--from TVs to video game consoles," said Noah Horowitz, senior scientist and director of the Center for Energy Efficiency. "It's just as possible to improve the efficiency of our DVRs and other pay TV boxes. But they're not going to build a better mousetrap unless we, the consumers, demand it."

Horowitz suggests consumers can ask their TV service providers that issue set-top boxes, Comcast, DirecTV, Dish Network, Time Warner, and others for Energy Star 4.0-rated devices in order to cut back on electricity use and save money on their monthly bill.


  1. I built a Linux based DVR (Mythdora) for OTA HD signals around 2004. It actually went to sleep and relied on the mainboard system clock to keep time so it could wake up and records shows at their pre-scheduled times. It would wake up a minute or so before the airing so the hard drives would be fully spinning when it was time to record. Best DVR I ever had. Now after moving out to the "sticks" I'm stuck with DirecTV's DVR and it doesn't seem as good in any regard to what I made myself back then.

  2. Unplug the power cable ya lazy bastards!

  3. Many of these STB's stay on so that they can monitor broadcast program data for schedule updates. They also continually receive and cache program schedules so that they are instantly available when the customer turns the box 'on'.

    It's no surprise that the streaming only devices don't suffer from this problem. They don't have to watch for last minute schedule changes...


  4. I'm not buying this article.

    I have solar panels, the hardest damn thing to power IS the Air Conditioning, the dryer, the stove, and the refrigerator none of which is in these charts.

    Those CFL bulbs are deceptive also.
    Some LEDS are better.

    Both COST!

    Also with solar there are hidden costs.
    Mounting Panel, Mounting all the electronics, Thick Expensive Copper Wire, High end inverters, Batteries...

    All this is a HIDDEN COST, don't go green, Go off grid, do it for a REASON. OR don't do it at all. This whole global warming thing is a freaking nasty joke to reign in world government, world police force, and world BANKSTERS!!

    ALL Router, Switch, Workstations, Computer and TV associated stuff runs on inverters (full sign wave) no problem.

    MY electrical knowledge shows this as false science.
    But I welcome someone to challenge this.