Things like cutting down on electricity is one of the ways that Costco is doing to try and be more efficient. In their sustainability report it stated,
The use of electricity, for example, represents a significant expense for our warehouses that we are constantly looking for ways to reduce. We closely track energy usage as part of this effort. Purchased electricity is the greatest source of our carbon emissions, so reducing our energy usage directly contributes to reduced emissions.
Costco is building new warehouses and expanding all of the country and the world, so for them their efforts are to try and maintain their carbon footprint growth to less than their company sales growth. In their report Costco also stated things like enhancing their warehouse energy management, expanding on packaging design initiatives, and furthering developing on their recycling and waste stream management systems. All these initiatives are to be more environmentally socially responsible.
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