GigaOm’s Katie Fehrenbacher has a post on Dec 31, 2013 on the top 13 cleantech moments of 2013 which includes Apple at #2 and Facebook at #9.

2). Apple’s ground-breaking bet on solar: This year Apple finished building the largest privately-owned solar panel farms in the U.S. in North Carolina to power a large data center. The move was disruptive because Apple threw down the gauntlet in a state where the local utility, Duke Energy, was taking its sweet time offering some of the giant data center customers in the area access to clean power. Following Apple’s decision, this year Duke Energy launched a new program to sell clean power to customers that are willing to pay for it. Apple also hired former chief of the U.S. Environmental Protection Agency, Lisa Jackson, to help the company grow its energy efficiency and clean power plans next year.

Apple’s solar farm in North Carolina

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9). Facebook plans to power a data center entirely with wind: Facebook hit a milestone in 2013 with its declaration that it plans to build a data center in Iowa partly in order to take advantage of the powerful wind corridor there. When the data center is built it will be run entirely off wind turbines. Facebook is working with a local utility there and the move shows how Internet companies can negotiate with utilities to get the clean power they want.