What is an energy audit?
An energy audit (energikartlegging) is a systematic review of where a company uses energy, aimed at finding ways to use less. It covers buildings, processes, transport and other activities.
The duty comes from section 8-5 of the Norwegian Energy Act and the Energy Audit Regulation, in force since 1 October 2024. Reports go to Enova. NVE, the energy regulator, supervises.
Who is covered?
Any undertaking with economic activity in Norway and an average annual energy use in Norway of at least 2.5 GWh over the last three years. Legal form does not matter.
Each legal entity is assessed on its own. A subsidiary counts separately, so it is the organisation number that matters, not the group. Public bodies exercising official authority, such as municipalities, are not covered.
It counts the energy you actually use: purchased electricity, gas and fuel, self-generated energy and losses. Energy you resell is left out.
Deadlines and the implementation plan
The first audit must be completed and reported by 1 October 2026. Enova's reporting guide says midnight on 30 September, so do not plan to file on the day.
After that, the audit must be repeated at least every four years. The clock starts when the previous report was submitted, not when the audit was done.
Within a year of the audit you need an implementation plan: a prioritised list of feasible measures, presented to management and described in the annual report. Carrying them out is not mandatory, but the board will be reading about them.
What the audit must contain
The content requirements are in section 4 of the regulation. In short, the audit must include:
- Energy use in Norway for the previous calendar year, with an electricity consumption profile
- A breakdown by buildings, processes, transport and energy carrier, focusing on the most energy-intensive areas
- At least 90 percent of the company's total energy use
- Up-to-date, measured and traceable data where available, plus previous years
- Specific measures with estimated savings and profitability, and progress on earlier measures
- An assessment of district heating and cooling, waste heat, demand flexibility and on-site renewables
Who can do the work?
Someone with a bachelor-level engineering degree focused on energy and at least two years of experience in energy assessment or energy management. The company must be able to document this.
In-house staff are fine if they can work as independently as an external consultant. The EN 16247 standards are a useful method, but not mandatory.
Certified management systems: another route, not a free pass
The requirement is met if the company holds a valid certification for an energy or environmental management system that contains an energy audit meeting the minimum requirements in section 4. In practice that means ISO 50001 or ISO 14001, though neither is named.
The catch is in that last clause. A certificate on the wall is not enough. The audit inside the system must meet the same requirements as a standalone audit, and you still have to report to Enova.
Where Vyve fits in
To be clear: Vyve does not do energy audits. We are not energy consultants, and software does not hold an engineering degree. For the audit itself you need a qualified person, in-house or external.
What Vyve does is the ISO 14001 track. Upload what you have, such as HSE policy, procedures, nonconformities and annual report, and Vyve produces a gap analysis against the ISO 14001 clauses, objectives with KPIs, an action plan with owners and deadlines, and traceable documentation. The VSME report comes from the same data.
For most industrial companies, energy is a significant environmental aspect. Build the energy audit and implementation plan into your environmental management system, and the measures become objectives, owners and deadlines in the same living plan as everything else, not a PDF in a drawer. That is also how a certified system can cover the legal requirement, provided the audit holds up.
Frequently asked questions
Who has to carry out an energy audit in Norway?
Undertakings with economic activity in Norway that have used at least 2.5 GWh of energy in Norway a year, averaged over the last three years. Each legal entity counts separately.
What is the deadline for the Norwegian energy audit?
The first audit must be reported by 1 October 2026, in practice midnight on 30 September. After that, at least every four years, counted from when the previous report was submitted.
Is the report sent to NVE or Enova?
To Enova, through its reporting portal. NVE supervises and can ask to see the full audit report.
Are ISO 14001 or ISO 50001 certified companies exempt?
Not automatically. The certified system must contain an energy audit that meets the regulation's minimum requirements, and you still have to report to Enova.
Can we do the energy audit in-house?
Yes, if the person doing it has an engineering bachelor's degree focused on energy, at least two years of relevant experience, and can work as independently as an external consultant.
What happens if we miss the deadline?
NVE can issue orders, coercive fines and infringement fees of up to five times the National Insurance basic amount. Exemptions are rare and require a reasoned application. The safest move is to report as soon as you can.
Sources
- Lovdata: Forskrift om energikartlegging (energikartleggingsforskriften), FOR-2024-09-25-2262
- Lovdata: Lov om endringer i energiloven og naturgassloven (overskuddsvarme, energikartlegging, måling og fakturering), LOV-2023-06-16-69
- NVE: Veileder til energikartleggingsforskriften
- NVE-veileder § 2 Virkeområde
- NVE-veileder § 3 Obligatorisk energikartlegging
- NVE-veileder § 4 Innholdet i energikartleggingen
- NVE-veileder § 5 Andre måter å oppfylle kravet til energikartlegging
- NVE-veileder § 8 Kvalifikasjonskrav
- NVE-veileder § 9 Gjennomføringsplan
- NVE-veileder § 13 Overtredelsesgebyr
- NVE-veileder § 14 Dispensasjon
- Enova: Veileder til rapportering av energikartlegging (versjon 3, 13.04.2026)
- Regjeringen, EØS-notatbasen: Energieffektiviseringsdirektivet (EED 2023)