Data centers and web hosting use electricity. Often, a lot of electricity. We, like our customers, are concerned about the environmental impact of this energy use, and want to speed development of a more sustainable, low-carbon, renewable energy economy. Therefore, in addition to using energy efficient hosting technologies, ASO has chosen to go a step further and match 150 percent of the electricity it uses with renewable energy, in the form of Renewable Energy Certificates (RECs). This commitment will ensure that for every kilowatt hour of electricity used to host your website, another one and one-half kilowatt hours of electricity is generated by renewable energy projects and delivered to the power grid.