Apple is installing Tesla megapack batteries at its massive solar farm in California

Apple is teaming up with Tesla.

The iPhone maker is planning to use Tesla’s megapack batteries to store the energy generated by its 130-megawatt solar farm, located in California.

The megapacks will allow apple to store 240-megawatt hours of energy—enough to power more than 7,000 homes for a full day.

The setup will include 85 Tesla lithium-ion megapacks and be used to help power the company’s corporate headquarters in Cupertino.

“The challenge with clean energy — solar and wind — is that it’s by definition intermittent,” said Apple VP Lisa Jackson. “If we can do it, and we can show that it works for us, it takes away the concerns about intermittency and it helps the grid in terms of stabilization. It’s something that can be imitated or built upon by other companies.”

Apple is also working to get its more than 110 manufacturing partners to move to 100% renewable energy for their Apple production.

The move is a step in the iPhone maker’s effort to become carbon neutral across its entire business by 2030.