Energy audit of a condominium: what it is for

An energy audit is a technical analysis that measures a building's real consumption, identifies losses and proposes efficiency measures in order of convenience. For a condominium it is the tool with which the owners' meeting makes informed decisions: before resolving on external insulation, a boiler replacement or a photovoltaic system, the audit says where energy is really lost and how much each measure yields. It is carried out under the technical standard UNI CEI EN 16247, which defines the method, requirements and contents of the energy audit.

An energy audit and an EPC are not the same thing

A common misunderstanding is to confuse the energy audit with the energy performance certificate (EPC, in Italian APE). The EPC is a standardised document that classifies the building on a scale of energy classes based on conventional data and theoretical use; it is used mainly in sales and leases. The energy audit, by contrast, starts from actual consumption and the real behaviour of occupants to build a tailored intervention scenario, with estimates of savings, costs and payback times. In short, the EPC photographs the class, the audit designs the improvement.

How the audit is carried out

The appointed technician collects historical gas and electricity bill data, surveys the features of the envelope and the systems, and in some cases takes instrumental measurements such as thermography to identify thermal bridges. The typical path is divided into a few stages:

1. Collection of historical consumption and of the building's cadastral and energy data.
2. Site inspection and survey of the envelope, the thermal plant and the common systems.
3. Construction of the building's energy model and calculation of demand.
4. Identification of improvement measures and simulation of expected savings.
5. Drafting of the audit report with the priority ranking and payback times.

The result is a document that ranks measures not only by technical effectiveness but by economic convenience, so the meeting can start with the fastest-payback measures.

Who decides and how the cost is resolved

Commissioning an energy audit is an act of conservative management and planning: the meeting can resolve it as an expense by ordinary majority. As it is not works on the common parts but a preparatory analysis, it does not require the reduced quorums provided for energy innovations. It is, however, a strategic decision, because its cost is repaid by avoiding wrong or badly sized measures.

Why it pays to do it before the incentives

Many bonuses and incentives for energy retrofit require, for their higher amounts, a demonstrable jump in energy class supported by technical documentation. An audit carried out upstream lets you choose the combination of measures that guarantees the required improvement and avoid spending on works that, taken alone, do not trigger the benefit. Moreover, having objective data makes the meeting resolution more solid and reduces the risk of challenges from sceptical owners.

What a good audit report contains

A well-made report is not a generic list of suggestions. It must contain the picture of consumption by energy carrier, the analysis of the envelope and plant weaknesses, the intervention scenarios with their savings estimates, indicative costs and payback times, and a clear hierarchy of priorities. These elements turn the audit into a real decision map for the condominium, useful also in later years to plan works in stages.

From audit to works plan

The real value of the audit emerges when its findings become a multi-year maintenance and efficiency plan, with cost items, deadlines and funds to set aside. Keeping consumption data, the works schedule and dedicated accounting together prevents the report from staying in a drawer.

Management software such as AmministraPro lets you archive the audit among the condominium's documents, plan the resulting measures and monitor their costs over time, making every decision taken by the meeting traceable. The features are described on the /funzioni page and the plans with their costs on the /prezzi page.