"Going green" has become a topic of increased attention lately, but it’s nothing new to knowledge management. By its nature, knowledge management promotes efficiency and optimal use of resources, which often reduces the amount of energy required to achieve a given goal. What has changed is the heightened awareness of those benefits. That awareness is creating new interest in KM solutions that can improve business performance while reducing environmental effects. Knowledge management also plays a role in the software tools that help companies improve their energy management, embedding expertise in algorithms to optimize use of office equipment and energy in buildings.