GreenHop Project

GreenHop is an open-source platform for continuous monitoring of energy consumption and environmental metrics in data centers, with a focus on small and medium-sized installations.

The project arose from the need to make energy efficiency monitoring accessible to smaller data centers, which often lack the resources to implement expensive commercial monitoring solutions. By adopting the Power Usage Effectiveness (PUE) metric defined by The Green Grid, GreenHop helps organizations track and improve their data center efficiency over time.

Key features

• Real-time PUE monitoring — continuous calculation of Power Usage Effectiveness to track energy efficiency.
• Environmental sensing — temperature, humidity and pressure monitoring throughout the data center.
• Power consumption analysis — detailed tracking of IT equipment and cooling infrastructure power usage.
• Custom alerting system — notifications for anomalies or when metrics exceed predefined thresholds.
• Historical data analysis — visualization of trends and patterns to support optimization decisions.
• Low-cost DIY hardware — implementation using affordable Arduino/Raspberry Pi components and sensors.

Technical implementation

GreenHop combines low-cost hardware components with an open-source software stack: