Amazon uses dirty energy, failing at clean energy promise, says Greenpeace Despite a promise to use clean renewable energy, Amazon's largest data center in North Virginia is wholly dependent on dirty electricity from coal and natural gas. Loudoun County Virginia, colloquially known as Data Center Alley, thanks to the many Internet hubs in the Reston/Herndon/Ashburn area, and is served by a utility, Dominion Energy, that relies heavily on coal and natural gas. One of Amazon's biggest AWS hubs is located there, as are data centers owned by many tech giants.