American retail giant Walmart has revealed plans to install up to 400 new solar projects at facilities across the US over the next four years as part of its global commitment to drive the production or procurement of 7 TWh of energy from renewable sources by the end of 2020 and its goal to be supplied by 100% renewable energy.

To facilitate these installations, Walmart has selected proposals from two preferred solar energy providers, SolarCity and SunEdison, following an RFP process.

Installations will vary in size, commensurate with the respective store or facility and it is expected that smaller systems will provide 10 to 20% of the facility’s electricity requirements and larger systems will provide 20 to 30% of the power needed by the facility.

The company has already installed approximately 260 solar projects to date in the US with a combined capacity of 105 MW, saving more than US$5 million in energy expenses, it says.

Commenting, Kim Saylors-Laster, vice president of energy at Walmart, said: ‘These projects bring us closer to fulfilling our commitment to double the number of on-site solar energy projects in US stores, Sam’s Clubs and distribution centres—thereby reducing our energy expenses and generating clean energy in local communities.’