What is Energy Efficient Ethernet?

Green Ethernet, also known as Energy Efficient Ethernet (EEE) reduces power consumption particularly during periods of low network activity while maintaining network connectivity. EEE, defined by the IEEE 802.3az standard, allows Ethernet devices to enter low-power states when traffic is idle. When network traffic increases, devices automatically return to full power, ensuring normal operation while saving energy during inactivity. This technology helps reduce overall energy consumption, especially in environments with fluctuating network traffic, like data centers or offices.

Example Scenario: Remote off-grid location

In a remote off-grid location, a Maple Systems HMI and PLC are connected to a network switch with Energy Efficient Ethernet (EEE). The site uses a solar panel system, providing limited power to the HMI, PLC, and network infrastructure. When network activity decreases, the EEE-enabled switch reduces its power consumption, extending the available power from the solar panels. This helps conserve energy, but the HMI and PLC will continue to operate at full power since if they do not support EEE.

Content created by Mike Day