Apple announced that there are now 44 suppliers that have committed to use clean energy for Apple production. It doesn’t mean all suppliers are using renewable energy; it also doesn’t mean that they use 100 percent clean energy for all their clients. But it’s still good news.

All Apple facilities already run on clean energy, such as offices, retails stores and data centers. But Apple is well aware that it manufactures a ton of devices and works with a ton of suppliers. That’s why the company has created a fund to help finance renewable energy projects in China. Apple is also allocating $2.5 billion in green bonds.

Thanks to these initiatives, Apple has financed solar rooftops in Japan, a custom alloy made of recycled aluminum that you can find on the MacBook Air and Mac Mini and more.

Overall, Apple expects to reach its 2020 goal of injecting 4 gigawatts of renewable energy into its supply chain well before 2020. In fact, the company now says that it will indirectly generate around 5 gigawatts of clean energy.

Suppliers in the program include Foxconn, Wistron, TSMC, Corning, STMicroelectronics and dozens of names that are mostly unknown to end customers.