By way of example, in Reduce our energy usage Support and explore alternative energy programs such as energy from solar and fuel cells Improve our refrigeration management systems, and begin to convert to refrigerants with a lower GWP, including installing CO2 systems Expand efficiencies in our transportation and logistics, which reduce the number of trucks on the road and fuel needed for the trucks used Reduce the amount of waste to landfill through our expanding Waste Management Programs Support employee transportation programs to reduce the amount of cars on the road Energy Use Purchased electricity for the company is the largest source of our carbon emissions and represents a significant expense.