Walmart Inc. is an American multinational retail corporation that operates a chain of hypermarkets, discount department stores, and grocery stores. The company was founded in 1962 by Sam Walton and is headquartered in Bentonville, Arkansas. Walmart is the world's largest company by revenue, with over 11,000 stores in 27 countries. Walmart operates in the Supercenters sector, which is a retail format that combines a grocery store with a department store.

Walmart has been a leader in decarbonisation efforts in the retail industry. The company has set a goal to become a zero-emission company by 2040, which includes decarbonising its operations and supply chain. Walmart has committed to sourcing 100% of its electricity from renewable energy sources by 2035. The company has also set a goal to reduce its greenhouse gas emissions by 18% by 2025, compared to its 2015 baseline.

To achieve its decarbonisation goals, Walmart has implemented various initiatives. The company has invested in renewable energy projects, such as wind and solar farms, to generate clean energy for its operations. Walmart has also implemented energy efficiency measures, such as LED lighting and HVAC upgrades, to reduce its energy consumption. In addition, Walmart has implemented sustainable sourcing practices to reduce the carbon footprint of its supply chain.

Walmart has also been a leader in corporate energy procurement. The company has signed several corporate power purchase agreements (PPAs) to support the development of renewable energy projects. Walmart has committed to sourcing 7 billion kilowatt-hours (kWh) of renewable energy annually by 2020, which is equivalent to 50% of the electricity used by its operations in the United States. Walmart has also signed PPAs for wind and solar projects in several states, including Texas, Indiana, and Illinois.

Walmart has also implemented a corporate PPA program to encourage its suppliers to transition to renewable energy. The program requires suppliers to disclose their greenhouse gas emissions and set emissions reduction targets. Suppliers are also encouraged to participate in Walmart's renewable energy procurement efforts, such as signing PPAs or installing onsite renewable energy systems.

Walmart's commitment to renewable energy and decarbonisation has earned the company several accolades. In 2020, Walmart was named to the Dow Jones Sustainability Index for the seventh consecutive year. The company was also named to the CDP A List for Climate Change for the fourth consecutive year. Walmart was also recognized by the Environmental Defense Fund for its leadership in reducing greenhouse gas emissions in its supply chain.

In conclusion, Walmart Inc. is a leader in decarbonisation efforts in the retail industry. The company has set ambitious goals to become a zero-emission company by 2040 and to source 100% of its electricity from renewable energy sources by 2035. Walmart has implemented various initiatives, such as investing in renewable energy projects and implementing energy efficiency measures, to achieve its decarbonisation goals. The company has also been a leader in corporate energy procurement, signing several PPAs to support the development of renewable energy projects. Walmart's commitment to renewable energy and decarbonisation has earned the company several accolades and recognition from industry experts.