In a previous post Green Scene Hits Your Code, I mentioned how a friend of mine loaned me a Kill A Watz. I realize I am a bit behind on posting the results from my non-scientific home test.
For about two weeks, I had the Kill A Watz monitoring the electrical usage of our home entertainment center. Specifically a:
- Panasonic 42″ Plasma TV
- Sony DVD Player
- Sony VCR Player
- Yamaha Subwoofer
(It’s a really simple home entertainment system. And yeah, I know, the VCR is an antique. Even worse, I don’t own a DVR…which would have driven up my numbers.)
The Kill A Watz records the number of hours it is plugged in as well as the total Kwh of electrical usage. The primary goal of my test was to see how much electricity and money I would save by physically pulling the plug on all this stuff versus having it sit in standby mode. Everything is plugged into a power strip. For about one week, we just left everything in standby mode. Then for about another week, we flipped the switch on the power strip to off when we were done watching TV.
Here are the numbers from the Kill A Watz (note: it wasn’t an exact week for each run):
|Stand By Mode||167 Hours||8.03 Kw||48.08 watts/hour|
|Powered Off||281 Hours||8.53 Kw||30.36 watts/hour|
It is amazing to see how much energy different items in your house consumes. One thing I noticed with the Kill A Watz is that when the plasma TV is running, it consumes between 200 and 400 watts of power depending on if the scene is dark or bright. A curious discovery. While these types of gadgets don’t do much on their own to save electricity, the awareness they help raise is a great start.