Apple reached an agreement with NV Energy to build 200 megawatts of additional solar energy in Nevada by early 2019 to support its Reno data center.

“Investing in innovative clean energy sources is vital to Apple’s commitment to reaching, and maintaining, 100 percent renewable energy across all our operations,” said Apple’s vice president for environment, policy and social initiatives Lisa Jackson. “Our partnership with NV Energy helps assure our customers their iMessages, FaceTime video chats and Siri inquiries are powered by clean energy, and supports efforts to offer the choice of green energy to Nevada residents and businesses.”
https://www.nvenergy.com/company/mediaroom/newsdetail.cfm?n=136958