Factory Energy Management System
Measure consumption from the transformer down to the production line and normalise it per shift and per unit produced. Don't guess why the bill changed — see which line changed, on which shift.
Why Energy Is Managed Differently in a Factory
In an industrial facility, energy consumption moves with output. The monthly invoice total therefore says nothing on its own: it rises when production rises and falls when production falls. To say anything about efficiency, consumption has to be divided by output and by shift — that is, normalised. Otherwise the same argument is repeated every month and no decision rests on measurement.
The second challenge is the character of the load. Motor drives, compressors, welding machines and furnaces draw inductive reactive power and generate harmonics. When the compensation panel loses a stage, the power factor drops silently; that drop is visible nowhere until the invoice arrives. The reactive charge is a single line on the bill, and because it is never broken down by day, it cannot be prevented.
The third is the base load. The power a plant keeps drawing when production stops — lighting, machines on standby, compressed-air leaks — does not rise with output, so it is a direct loss, and in most facilities it has never been measured. An energy monitoring system solves all three together: it normalises the measurement, shows the power factor continuously through the month, and tracks the shutdown base load as a separate series.
Argus EMS Factory Module
- kWh per tonne and kWh per unit production intensity indicators
- Transformer load, winding temperature and loading ratio tracking
- Shift-based consumption comparison and shutdown base load
- Separate sub-meters for compressors, furnaces and motor groups
- Power quality: harmonic distortion (THD), voltage imbalance
- EPDK reactive penalty risk — cumulative ratio and early warning
- Peak-band alerts and an hourly profile for load shifting
- Generator running hours, fuel level and test record
Which Indicator Tells You What in a Factory?
Total consumption matters to management; the normalised indicator matters to the production and maintenance teams. Argus EMS shows both side by side, so cost and efficiency are read from the same table.
| Indicator | What It Measures | When to Look |
|---|---|---|
| Total kWh / ₺ | Absolute energy cost of the period | Budget and invoice reconciliation |
| kWh / tonne or kWh / unit | Energy performance stripped of output volume | Product, line and month comparison |
| Shift kWh difference | Operating difference between shifts doing the same work | Weekly operations review |
| Shutdown base load (kW) | Consumption and leaks that continue with no production | Weekends and after planned shutdowns |
| Cumulative reactive ratio | Headroom left to the EPDK penalty limit | Continuously through the month |
| THD and transformer loading ratio | Power quality and the transformer's spare capacity | Before commissioning a new line |
Where Does Energy Go in a Factory?
Transformer & Main Distribution
Transformer load, winding temperature and loading ratio are monitored. Before a new line is commissioned, the transformer's spare capacity is known by measurement, not by estimate.
Reactive Power & Compensation
Power factor is monitored continuously and the cumulative ratio is shown through the month. When a compensation stage drops out, a warning reports it — not the invoice.
Production Lines & Compressors
Every line and compressor panel is metered separately. Compressor consumption that continues during shutdown hours is a direct sign of a compressed-air leak.
Generator & Uninterruptible Power
Generator fuel level, running hours and last test record are kept. UPS load and battery status on critical lines are followed as a trend.
Production-Linked Budget and End-of-Month Projection
Argus EMS does not forecast month-end by spreading a flat average over the remaining days. The measured series is the authority: elapsed days, the day-of-week pattern and extra weight on recent weeks are used together. In a factory this is decisive, because weekend shutdowns and shift count change consumption directly, and a flat average gets month-end systematically wrong.
No speculative price-escalation curve is applied to unit prices. Until an official invoice or tariff row arrives, the last known unit price is carried forward unchanged; when an invoice is uploaded, the new price is applied to all remaining months and only the amount is recalculated while quantity targets stay put. See the budget projection page for detail.
Go Deeper
For choosing measurement hardware start with the energy analyser page, and for connecting existing PLCs and meters see Modbus energy monitoring. How the reactive charge arises is covered on the reactive penalty prevention page, and the health of the compensation panel in the maintenance checklist article. If you have a certification goal, read ISO 50001; for a rough sizing estimate the free calculators are enough.
Factory Energy Management — Frequently Asked Questions
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