Google largest buyer of renewable energy in the US

Google is the biggest buyer of renewable power. In fact, it buys three times more the amount of renewable electricity than the organisation in second place on the list, the US' defence headquarters 'The Pentagon'.

Google purchases over 1,800 Megawatts (MW) of renewable energy through long term contracts called power purchase agreements (PPAs), according to a Bloomberg New Energy Finance report. The report tracked a database of more than 600 corportate PPAs.

A large majority of this renewable energy purchased by Google is from Wind and a little comes from Solar.

The Pentagon which buys nearly 600 MW of renewable energy consists of a large part of solar. The rest being wind and biomass and waste energy.

Amazon comes in at No.3 in this clean energy list with the purchase of over 500 MW of renewable energy. And like Google, a large part of this is wind energy.

Next comes in Walmart and The Dow Chemical Company followed by Equinix Inc and Facebook.

Facebook and The Dow Chemical Co purchase only wind energy in terms of renewable energy.

The reason for this is President Barack Obama has pushed for more companies to adopt clean energy.

While this is so, in the US a major source of energy generation still remains to be gas with 444,830 MW, followed by coal with 278,540 MW.

In terms of renewable energy generation hydro and wind at the top with 79,221 MW and 73,751 MW of energy generation, respectively.