Measure tenant sub-meters, common areas and chiller load separately. Break the single main-meter bill down to its source and allocate from measurement, not estimation.
In a shopping centre the electricity bill arrives for a single account, yet the consumption is spread across dozens of independent businesses and the common areas. The management company has to allocate that one figure among tenants. When the allocation is not based on measurement, two things follow at once: the tenant cannot see what they paid for, and management does not know what the common areas actually consume. Both are solved only by reading sub-meters.
The second challenge is seasonal swing. Chillers dominate in summer and heating in winter, so the total kWh of the two periods cannot be compared directly. On top of that the base load — car-park lighting, jet fans, escalators, common-area ventilation — continues even while the shops are closed. Unless that base load is metered separately it stays invisible inside the total.
The third is the evidential value of the measurement. When a tenant disputes an invoice, what has to be explained is a reading, not an estimate. An energy monitoring system makes every invoice line traceable back to a meter index, so which index, which tariff and which time band produced the figure can be seen.
Total consumption matters to the board; the normalised indicator matters to the technical team. 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 / m² lettable area | Energy intensity stripped of floor size | Comparison across months and sites |
| Common-area share (%) | Gap between the main meter and the sum of sub-meters | Before period close and allocation |
| kWh / degree-day | Cooling and heating performance stripped of weather | Season changeover and chiller maintenance |
| Night base load (kW) | Consumption that continues while the shops are closed | Auditing the operating schedule |
| Cumulative reactive ratio | Headroom left to the EPDK penalty limit | Continuously through the month |
Each shop's sub-meter is read automatically, the time-band calculation is applied and a PDF invoice is produced. Every step traces back to a meter index.
The largest electricity item in summer. Water inlet-outlet temperature, compressor status and setpoint are monitored; the chilled-water setpoint is managed from measurement.
Car-park lighting, jet fans and escalators form the base load. The gap between the main meter and the sub-meters reveals unmetered consumption.
M-Bus water meters are read every 15 minutes. A flow that never falls to zero while the centre is closed is the earliest sign of a hidden leak.
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 shopping centre this matters especially, because weekend footfall separates clearly from weekdays 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.
For the commercial building as a whole, start with building energy management; for the tenant side see sub-tenant billing and automatic invoicing. For measurement hardware see the energy analyser page, and for how the reactive charge arises see reactive penalty prevention. For a rough sizing estimate the free calculators are enough.
A free demo with your existing tenant meters and chiller panel.
Explore the system with your own data in a demo session.