The conclusion was reached in the environmental organization's latest report, entitled Clicking Clean: Who is Winning the Race to Build a Green Internet, which awarded Apple a final 'A' grade and a clean energy index score of 83 percent. Facebook and Google also scored 'A' grades, with clean energy index scores of 67 and 56 percent respectively.
"Thanks to the leadership and advocacy of companies like Apple, Google, Facebook, and Switch, we are seeing the tech industry make major strides toward powering the internet with clean energy," Gary Cook, Greenpeace's senior IT analyst, said in a statement.The report ranked companies on a range of green credentials, from energy transparency and renewable procurement to energy efficiency and mitigation. Nevada-based telecoms company Switch, which develops data centers, was the only company in its sector to be awarded grade A's across the board, with a 100 percent clean energy index.
According to the report, Apple "played a catalytic role within its IT supply chain, pushing other IT data center and cloud operators who help deliver pieces of Apple's corner of the internet to follow their lead in powering their operations with renewable energy".
Apple, Google, and Facebook pledged in 2012 to commit to 100 percent renewable energy sources. Apple's new Cupertino campus, which is currently under construction, will run entirely on renewable energy, thanks to an estimated 700,000 square feet of solar panels.
Despite the positives in the tech sector, the report highlighted concerns with regards to emerging East Asian internet companies, which lack access to renewables from monopoly utilities in those regions.
"Without key policy changes, the rapid growth of the internet in East Asia will likely be powered by coal and other dirty sources of electricity," the report stated. According to Greenpeace, the north and southeast Asian region is the world's biggest emitter of CO2.