The retailer expects to use 100% renewable energy by 2035. Walmart (WMT) - Get Report also unveiled plans to restore at least 50 million acres of land and one million square miles of ocean by 2030 to "help combat the cascading loss of nature threatening the planet."
Walmart says it hopes to reach zero emissions without the use of carbon offsets.
Its shares are up 0.6%.
The big-box retailer follows in the steps of technology companies that have made similar commitments to the environment.
In July, Apple said it would become carbon neutral by 2030. The iPhone and computer company said the commitment means that "by 2030, every Apple device sold will have net zero climate impact."
“Businesses have a profound opportunity to help build a more sustainable future, one born of our common concern for the planet we share,” said Apple's CEO Tim Cook.
"While the world will need to reach net zero, those of us who can afford to move faster and go further should do so,” said Microsoft president Brad Smith in a statement.