Energy audits

An energy audit is a systematic review of an organisation’s energy use to identify cost-effective savings. Under the EU EED, it is mandatory for companies above 10 TJ a year.

An energy audit is a systematic review of an organisation’s energy use, designed to identify cost-effective opportunities for energy savings. In Denmark, companies must also carry out a climate audit (klimasyn), a similar review focused on emissions and how to reduce them.

Who must carry out energy audits?

The requirements come from the recast EU Energy Efficiency Directive (EED) and are implemented nationally. They depend on the company’s average annual energy consumption:

  • Above 10 TJ: regular energy audits, at least every four years
  • Above 85 TJ: a certified energy management system, for example ISO 50001

In Denmark, companies between 10 and 85 TJ had to complete an energy audit by 1 August 2025 and a climate audit by 1 August 2026. Companies can choose energy management as an alternative to mandatory audits. Deadlines and details vary by country, so always check the guidance from your national energy authority.

What makes a good energy audit?

  • Reliable, up to date consumption data
  • A clear view of the most significant energy uses
  • Consumption corrected for weather, for example with degree day correction
  • Specific, prioritised recommendations for savings

How Enity EMS supports energy audits

Enity EMS provides the data foundation that energy and climate audits rely on: automatically collected and validated consumption data, KPIs, analysis and CO2e figures. That makes the audit faster and the follow-up measurable.

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Want to see how Enity EMS can make your energy audits easier? Book a demo and we will show you how it works with your own data.

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