There's an additional bonus, each time your computer is put into 'Eco Mode' the ecobutton™ software records how many carbon units and how much power and money you have saved by using the ecobutton™. Over time this can add up to quite a lot (especially if you have many computers running in an office) and you can use this data to help reduce your carbon footprint as well as your energy bills. Based on the study figures, by using the ecobutton™ nationally, we could save700,000 tonnes of carbon currently wasted in UK offices. It makes great sense financially too - an average home would save around £50 per year, and nationally we could save £115 million. Compatibility: The ecobutton™ is currently only compatible with Windows PCs. A Mac OSX version will be available shortly.