With climate changes and possible blackouts in Belgium, saving energy is becoming ever more important. So how can the Cable world contribute? The future standard, DOCSIS 3.1, promises advanced energy saving features using DOCSIS Light Sleep (DLS) mode. No need to wait though, the current specification (DOCSIS 3.0) already provides a mechanism to reduce cable modem power usage: Energy Management 1×1. Let’s take a closer look.