How to configure consumption-based allocation in the software

When consumption-based allocation is needed

Consumption-based allocation applies whenever there is an objective measurement of each unit's draw. The most common cases are cold or hot water with divisional meters and central heating equipped with heat cost allocators, for which the UNI 10200 standard governs the split between voluntary consumption and involuntary power charges.

Not every expense goes to consumption. The costs of preserving and maintaining the system stay allocated by thousandths or by a dedicated table, while only the part tied to actual draw follows the readings. Before configuring, it is therefore worth splitting the expense into two components: the fixed part and the variable part.

• Drinking water with individual meters
• Central heating with heat metering
• Services with a measurable per-unit reading

Prepare the data before configuring

Configuration starts from the registry data. Each unit must be linked to its own meter or allocator, with a stable identifier that does not change from one financial year to the next. In the software it helps to record the device code so the reading is uniquely bound to the unit, avoiding swaps between apartments.

You then need to set the split percentage between fixed and variable share. For heating this choice comes from the UNI 10200 technical report or from a resolution of the owners' meeting adopted where the technical conditions are absent. Recording the percentage in the software once, at the table level, avoids recalculating it every year.

Set up the consumption table step by step

In the software you create a table dedicated to the metered service, distinct from the general thousandths table. The table is assigned the correct unit of measure, for example cubic metres for water or allocation units for heat, so the totals stay consistent with the supplier's bills.

The central step is defining the two components. The fixed share is distributed by thousandths or by an existing base table, while the variable share is distributed over the readings. The software applies the set percentage and sums the two parts for each unit.

• Create a consumption table separate from the general thousandths
• Set the unit of measure for the service
• Define the fixed and variable share percentage
• Link each meter to the correct property unit

Enter readings and close the period

Readings are entered as the period's opening and closing value, or as an already computed net consumption. The software derives the draw by difference and compares it with the total billed by the supplier, flagging any gap between the sum of individual consumptions and the building's general consumption.

The gap between the sum of submeters and the main meter is physiological, due to losses and measurement tolerances. The part not covered by individual readings must be allocated explicitly, usually by thousandths or in proportion to consumption, according to the recorded choice. Documenting this step keeps the allocation transparent and defensible.

Verify and produce the statement

Before issuing the instalments it is best to simulate the allocation and check the totals. The sum of the shares must match the expense to be distributed down to the cent, and each unit must clearly show fixed share, variable share and total, so the owner understands how the amount was calculated.

With AmministraPro the consumption table, the readings and the fixed share are set once and stay linked across subsequent years, with an allocation statement readable for the meeting. The available features are described on the /funzioni page, while the plans and limits of each option are listed on the /prezzi page.

Frequently asked questions