Apple’s massive billion-dollar North Carolina data center, which received a failing rating in a Greenpeace report earlier this year, may soon be powered by a solar farm. The Charlotte Observer recently uncovered permit plans from North Carolina’s Catawba County that show Apple’s intentions to adjust the terrain on a 171-acre plot across from its data center. The plans are titled “Project Dolphin Solar Farm A Expanded” but they do not discuss the solar farm itself. Instead, they detail roads, erosion control and a strategy to avoid disturbing local streams and the local environment with construction work. Apple has yet to apply for a building permit for the site, but more information will likely be revealed if it does. This is not Apple’s first foray into eco-friendly power; its facilities in Austin, Texas; Sacramento, California; and Cork, Ireland already run on 100% renewable energy. The Cupertino-based company currently relies on coal and nuclear power from Duke Energy to run its North Carolina data center.