Microsoft #2The Wintel alliance might have seen better days when it comes to personal computers, but they are still on top when it comes to green power. The U.S. Environmental Protection Agency (EPA) has updated its list of the top users of clean energy in the country, and chip-maker Intel tops the "National top 50" list for the fifth year in a row with a very impressive 3,100,850,000 kWh of green power used (sources: Biogas, Biomass, Small-hydro, Solar, Wind). This represents 100% of the electricity used by Intel!
Right under Intel on the list is their old partner, Microsoft. They used 1,935,637,485 kWh of green power during the year, representing 80% of their total electricity use.
#4 is Whole Foods Market with 800,257,623 kWh, another net producer that had a 7% surplus over what it used. Their energy sources are solar and wind.
#5 is Wal-Mart. They used almost as much green power as Whole Foods with 751,431,792 kWh, but they are so huge that this was only 4% of their total electricity use. Just imagine if they went to 100%... They'd eclipse Intel.
You can see the rest of the EPA's National top 50 list here. Another interesting list is the 100% Green Power users; the top 3 are the same as the national list, but after that it gets pretty different.