From OEE to OGE: Tracking the Energy Side of Efficiency

Every manufacturer tracks OEE (Overall Equipment Effectiveness). Yet few measure how efficiently equipment uses energy. OGE (Overall Green Effectiveness) adds the missing dimension: productivity per kWh or per ton of CO₂.

Defining OGE

OGE = (Good Output × Energy Baseline) / Actual Energy Consumed

It’s a simple KPI that shows how much useful product you get per unit of energy. A drop in OGE highlights energy waste even when OEE stays constant.

How to Integrate OGE into Automation Systems

• Use PLC energy counters or smart meters as data sources.
• Collect data through OPC UA or MQTT to your MES.
• Correlate with production tags: cycle time, rejects, stops.
• Visualize on the same dashboards as OEE for operator visibility.

Benefits of OGE

• Identifies hidden losses (idle power draw, standby waste).
• Improves sustainability reporting with quantifiable data.
• Links energy KPIs to production decisions — not facilities alone.

Case Example: Beverage Manufacturer

By integrating OGE into its MES, a bottling plant identified 8% energy waste during cleaning cycles. Adjusting start/stop sequencing saved €150,000 annually.

Related Articles

• Cutting Energy Use with Automation: The 90-Day Plan
• Decarbonizing Heat Processes with Controls and Data
• Sustainability Dashboards That Engineers Actually Use

Conclusion

Adding OGE to your KPI set aligns energy performance with production performance. It makes sustainability a measurable, operational goal — not just a CSR statement.