Apple is adding several new data cluster buildings to its data center facilities in Reno, Nevada.

The center, first launched in 2013, is currently in its second phase of construction, which is due to finish in Q3 2014.

But new plans submitted to local Washoe County authorities suggest the company is to continually expand the campus.

Apple's latest plan is for eight data cluster buildings and an administration building on the 2,220 ac property, which has enough room to double its entire capacity in the future, reports local newspaper the San Reno Gazette.

Plans include a solar panel farm that could generate up to 18–20 MW of power for data center operations and supplement the plant's current geothermal power.

The expansion of the Reno data center may be an alternative to a previous plan for another facility in another part of town, the Tessera District of Reno, which has been delayed.

Apple is contractually obliged to develop the property in order to qualify for a US$73m tax breaks that the city of Reno offered as part of an aggregate US$89m tax incentive package to Apple to attract the IT giant to the region’s Reno technology park.

According to Bill Thomas, the city of Reno’s assistant manager, Apple has not been forthcoming about its plans for the ‘downtown’ region.

"I haven't heard anything and, as far as I know, no one in the city has heard anything. I'm not saying we won't hear from them but it's been silence on their end,” Thomas said.

Meanwhile, in Washoe County, Apple continues to expand.

Washoe County senior planner Trevor Lloyd said; “they just keep plugging along."

"Apple keeps submitting plans and it looks like they'll be expanding for a long time," Lloyd said.