EMS
Energy Monitoring 101: Where to Measure and Why
Strategic placement of energy meters is crucial for actionable insights. Learn the principles of multi-tier metering and how to design an effective energy monitoring system.
Introduction
You cannot manage what you do not measure. This guide helps you design an energy monitoring system that provides actionable insights without excessive cost.
The Multi-Tier Metering Pyramid
Tier 1: Main Incomer (Essential)
Purpose: Verify utility billing, track total facility consumption
Tier 2: Feeder Level (Recommended)
Purpose: Understand consumption by department, building, or process
Tier 3: Sub-Feeder / Equipment Level (Optional)
Purpose: Detailed visibility into specific equipment or sub-processes
Strategic Meter Placement
If budget is limited, prioritize main incomer, largest energy consumers, high-variability loads, and areas with suspected waste.
Current Transformer (CT) Sizing
Choose CT ratio so normal operating current is 50-80% of CT primary rating for optimal accuracy.
Communication Protocols
Common protocols include Modbus RTU (RS-485), Modbus TCP (Ethernet), and Wireless (Wi-Fi, LoRaWAN).
Getting Started
- Energy Audit
- Prioritize metering points
- Design system
- Implement in phases
- Act on data
Conclusion
Start with the basics and commit to regular reviews and actions based on the data.
Related articles
See all →SCADA
Why Your SCADA Goes Offline When the Router Reboots
Network infrastructure is critical for SCADA reliability. Learn why communication failures happen and how to design resilient industrial networks.
IIoT
Troubleshooting Modbus Communication Issues
Modbus networks are common in industrial automation but can be tricky. Learn how to diagnose and fix common communication problems.
PV-DG
Understanding PV-DG Synchronization: A Complete Guide
Learn how solar PV, diesel generators, and grid power can work together seamlessly. Essential concepts, protection requirements, and common mistakes to avoid.