The Life Cycle Climate Performancecalculator is a Web-based tool that allows users to compare different supermarket system architectures with various refrigerants. It calculates annual power, total annual carbon-dioxide emissions and peak power, and is also able to provide recommendations to users. The tool also allows the user to enter operating conditions in which to compare. Multiple system types can be analyzed, including centralized direct expansion, distributed, cascade, secondary and booster CO2.