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Energy Efficiency··3 min read

What is an energy audit

The complete analysis of business energy consumption: when it is mandatory, how it works, and what benefits it brings.


An energy audit (diagnosi energetica) is a systematic and documented analysis of an organization's energy consumption, aimed at identifying areas of inefficiency and improvement opportunities.

When it is mandatory

Italian Legislative Decree 102/2014 (implementing EU Directive 2012/27/EU) makes energy audits mandatory every 4 years for specific categories of companies. SMEs with ISO 50001 or EMAS certification are exempt.

CategoryCriterionFrequency
Large enterprisesOver 250 employeesEvery 4 years
Large enterprisesRevenue > €50MEvery 4 years
Energy-intensiveRegistered in CSEA listsEvery 4 years
Certified SMEsISO 50001 or EMASExempt

How it is conducted

The audit follows the UNI CEI EN 16247 standard and includes several structured phases:

Data collection Site inspection Energy modeling Measures Report ENEA

The final report is uploaded to the ENEA portal and contains the cost-benefit analysis for each identified intervention.

Concrete benefits

15-30%
Average energy savings
< 3 years
Investment payback
4 years
Audit validity period

Beyond regulatory compliance, the energy audit provides a clear map of where the company wastes energy and where it can intervene with the best cost-benefit ratio.

Important deadlines: The energy audit must be repeated every 4 years from the date of the last audit. The report must be uploaded to the ENEA portal by December 5th of the expiry year. Non-compliance results in fines from €4,000 to €40,000 (art. 16 D.Lgs. 102/2014).

The articles published on this website are for informational and educational purposes only. Some content may have been written with the support of artificial intelligence tools, based on official sources and industry data. IPGS ENERGY does not guarantee completeness or the absence of errors.

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