The need and approach
A total bill may not explain which equipment consumed energy or when. Comparisons can mislead if meter hierarchy, measurement boundaries and production context have not been defined.
Data flow
Energy meter → register read → unit and time validation → interval consumption → comparison.
Instantaneous power in kW and energy in kWh are different quantities. Differences between cumulative readings require checks for resets, rollover, device replacement and missing records. Submeters are compared with the main meter only after their boundaries are understood.
Illustrative workflow
Two shifts are compared using consumption, output and operating time. A higher kWh total by itself does not establish inefficiency.
Questions for discovery
- Which feeds or machines are measured separately?
- Which registers and units does the meter expose?
- How can a reset be identified?
- Are shift and production records available?
- Which conditions need to be comparable?
Limits and field conditions
Monitoring does not guarantee savings. Tariff calculations and billing accuracy require their own scope and validation.
Common questions
Can existing equipment be used?
Suitability depends on the device interface, manufacturer documentation, access permission and a field test. Start by sharing model details and the signals that are available.