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The stereo/DVD/VCR/etc was drawing 53 watts with all equipment in standby mode.
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Plug packs were drawing between 3 and 7 watts each without anything being plugged into them.
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A washing machine draws ~7 watts in standby mode.
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The fishtank's one of the primary sources of energy consumption; mainly due to the heaters, which were drawing ~3.9kwh per day (~164 watts). A friend (thanks Michael) suggested putting foam on the back to stop heat loss, so I took a quick trip to the local Clarke Rubber store, and purchased some pre-cut sheets that were enough to cover the back (6 foot by 2 foot) to a thickness of one inch (total cost under $20). I've also put some foam used to insulate copper pipes over the filter hoses (total cost $4). I had the power meter connected to the tank for almost a week, and it's now showing daily average consumption figures of 3.2kwh (~135 watts), or a reduction of 0.7kwh per day. Not bad for a ~$24 outlay. Sometimes its the simple things...
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The two-door side-by-side fridge draws ~1.8kwh per day
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A pedestal fan draws ~30 watts, and a portable evaporative cooler draws ~60 watts
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A small (34cm) TV draws ~50 watts; the same or less than a small LCD TV, but at under $100 it's a fair bit cheaper. It also draws 13 watts in standby mode. A big TV is great, but is it really needed for all occasions?
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A 19 inch CRT computer monitor draws ~86 watts
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An electric toothbrush draws 2 watts in standby
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An Energizer 4 AA battery charger draws 1.5 watts without any batteries in it.
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A microwave draws 4 watts to run the clock
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A 50 watt halogen lamp was actually drawing 67 watts
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The evaporative cooling unit (no LCD display, just manual controls with a few LEDs) draws ~0.3 watts in standby
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The UPS I was using draws between 50 and 66 watts in standby with nothing connected to it! I had a look at a couple in Jaycar and got them to measure the standby consumption before I purchased one. Basically the one I was using was way oversized, and so the charging circuits, fans, etc were scaled to suit.
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Item |
Power Usage |
Action Taken |
Modified Usage |
Stereo DVD/VCR etc |
53 watts (standby) |
Turn off at the wall |
0 watts |
Plugpacks from chargers, etc |
3 - 7 watts (standby) |
Turn off at the wall |
0 watts |
Washing machine |
7 watts (standby) |
Turn off at the wall |
0 watts |
Web server (Dell desktop PC) |
46 watts (operating) |
Changed to second hand Dell C600 laptop |
24 watts |
Halogen garden lighting |
240 watts (operating) |
Converted to LED |
13 watts |
Fish tank heaters (2 x 300w) |
163 watts (average operating) |
Insulated the back of the tank with foam, as well as exposed piping |
135 watts |
Microwave |
4 watts (standby) |
Turn off at the wall |
0 watts |
UPS |
60 watts (standby) |
Changed to a more efficient model |
22 watts |