Edison is a nice little program to manage your computer's power usage.
It can calculate how much you will save in a month / year according to the settings. We can specify the price per unit of our electricity tariff, and it will automatically calculate all the savings we would make depending on the setting of high / low power usage.
It will do the calculations on Money savings in U.S.D. and Energy savings in Kilo Watt Hour. Also, CO2 emission in Pounds. Anyway, this is just a rough calculation not much accurate. If you were using your computer for many hours a day and have the habit of leaving it on for some time, this program can save a lot of energy. Otherwise, it is just a minor / no saving at all.
All you need to know is to set the power options in control panel to save electric energy. Also, windows Vista makes it very easy to manage the power settings for a computer.
So, this program is really not a necessity to save energy. All it does is schedule the program to define a "Working Time" for the computer. Other hours are considered as Non-Working hours. And, we can set the program / schedule it to turn off monitor, turn off hard disk and to suspend the computer (Sleep / Stand By) in 15 minutes, 30 minutes or some custom times for all.
We can specify different setting for Working Hours (more power usage) and Non-Working Hours (power saving settings). more
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