Executive Summary
The ENERGY module observes actual electrical pathways — train power, protection, HVAC and auxiliary loads — rather than modelling abstract savings.
The Pathway
Train power → protection → HVAC → auxiliary loads → sensors → energy monitoring → CORE-ERMC. Sub-metering at each stage identifies where energy is actually consumed.
What It Does Not Do
The ENERGY module does not alter core traction or safety electrics, and does not guarantee a fixed percentage energy saving — any optimisation figure shown elsewhere on this site is a simulation or target, not a measured result, unless explicitly labelled otherwise.
This publication describes conceptual frameworks and proposed architectures. Where quantitative figures appear, they are engineering projections intended for planning and are subject to experimental validation.
Fleet-Level Value
Aggregated across a fleet, consistent sub-metering supports anomaly detection and predictive diagnostics that are difficult to achieve with periodic manual measurement alone.
Glossary
References
References point to established engineering disciplines and public frameworks, not fabricated citations.
- General railway electrical sub-metering practice
- TransO2 ENERGY module architecture documentation
Suggested Citation
TransO2 Engineering Team. Mapping the Real Electrical-Energy Pathways Onboard. Knowledge Centre Publication TO-106. TransO2. v1.0. 2025.
About TransO2
TransO2 is developing a modular Environmental Operating System for railway rolling stock — integrating air, thermal, energy, safety, water and digital intelligence. Engineering concepts and performance targets are subject to detailed design, testing, validation and certification.