Evan points to a Windows-based power management app, Local Cooling. Apart from providing some useful settings, it shows the theoretical energy savings and also “phones home” to show the aggregate saving of all Local Cooling users.
Great idea! Nice work – plus I learnt these little factoids (I’m yet to verify):
More than 30 billion kilowatt-hours of energy is wasted because many of us simply forget to shut down our computers when we’re not using them. If we could just improve the efficiency of how we use our PCs, the savings in energy costs would be over $3 billion dollars! The CO2 emissions from just 15 computers are equivalent in energy terms to the gas consumption used by one car.