The electric carmaker is looking to change the energy industry with its new battery suite, announced in April. The wall-mounted lithium-ion Powerwall battery can be installed in a home to save energy by charging during the day and discharging at night, when the home’s energy demands are lower. Because it stores solar energy, it can also be used as a backup power supply during power outages. The Powerwall could be particularly impactful in Africa, where more than 600 million people lack reliable electricity. Instead, they rely on generators, which spew pollution. Tesla partnered with a solar kit distributor to sell the batteries in South Africa starting in 2016.
This year, Apple focused on cleaning up its supply chain. The iPhone maker’s U.S. operations and data centers are already powered by renewables, but a majority of its emissions are created during the manufacturing process.
In April, the company announced it would build 200 megawatts of solar projects in China, which, aside from making a dent in supply chain energy use, will also produce enough power to light hundreds of thousands of homes a year. The company is sharing best practices with its suppliers, like Foxconn, which will buy 400 megawatts of solar by 2018. When Apple’s new retail store opens in Singapore (its first in retail operation in Southeast Asia), it will operate entirely on solar. And starting in 2016, a solar farm in Monterey County, California, will power Apple’s new campus, all of its California offices, and retail stores.