Energy-efficient facilities use less energy to provide the same level of occupant comfort, and energy-efficient manufacturing facilities use less energy to produce the same goods. Prioritizing energy efficiency is among the easiest and most cost-effective ways to reduce energy use, making it the ideal first step to enhancing operational efficiency and creating reliable infrastructure. Through the Better Climate Challenge and Better Buildings Challenge, DOE works with diverse partners to share their successes in adopting energy-efficient processes and technologies.