Optimizing a supply chain for sustainability is an efficient way for companies to reduce their environmental footprint while increasing long term profits. By 2025 almost two billion people are expected to become global consumers, a 75 percent increase over 2010. This will require increased transport within supply chains, ultimately causing more greenhouse gas production. Sustainable supply chains focus on improving efficiency throughout the entire process, with a strong focus on reducing waste/CO2 production and improving communication. These waste products directly contribute to global warming, which is a worldwide issue leading to a host of further problems. In the metal packaging world a few key components that are focused to improve sustainability are overall production efficiency, location raw materials are sourced from, transportation, and sales. Companies that focus on sustainably optimizing these aspects of their supply chain can expect to see a host of effects relating to their company cost, product cost, and environmental impact.