InfoLegislation and standardisation | Advisory Committee

Legal requirements and international standards

Technical certification and servicing: The Danish legal requirements for technical certification and servicing of wind turbines are set out in the Executive Order on technical certification and servicing of wind turbines.

LINK | DA | Bekendtgørelse om teknisk certificering og servicering | Ministry of Climate, Energy and Utilities

PDF | EN | Executive Order on technical certification and servicing of wind turnibes etc. (unofficial translation) | Ministry of Climate, Energy and Utilities

PDF | DA | Guidance document to the Executive Order | The Danish Energy Agency's guidance document to the executive order

PDF | EN | Guidance document to the Executive Order (awaiting publishing) | The Danish Energy Agency's guidance document to the executive order

Noise from wind turbines: It is a requirement in the executive order on technical certification and servicing of wind turbines, that there is a source noise measurement carried out in accordance with Danish regulation. In Denmark, specific requirements have been set for noise measurements, etc. on wind turbines in the Executive Order on Noise for Wind Turbines, which includes rules on the measurement of low-frequency noise. The rules are issued by the Ministry of Environment of Denmark

PDF | EN | Statutory Order on noise from wind turbines | Ministry of Environment of Denmark

LINK | EN | Wind turbine noise | Environmental Protection Agency subpage on noise from wind turbines

PDF | DA | Støj fra vindmøller (DA)| The Danish Environmental Protection Agency's guide to the executive order on noise from wind turbines

You will find links to relevant international standards and certification schemes at the bottom of this page.

International standards for technical certification of wind turbines

The legal requirements for certification follow (with a few exceptions) the minimum requirements for wind turbine safety and health, which are set in international technical standards and certification procedures for wind turbine systems prepared under the standardisation body IEC and the certification system IECRE. The purpose of the certification is to demonstrate compliance with the technical standards.

The use of the term “minimum requirements” implies that there is freedom of method. Other standards and procedures can be used, as long as they at least correspond to the relevant requirements set out in Executive Order no. 1773 in terms of safety.

In addition to meeting the requirements for technical certification and servicing, wind turbines must always comply with other applicable legislation.

The Executive Order no. 1773 refers to the following international standards and procedures for certification of wind turbines and wind turbine projects:

Type and prototype certification of wind turbines with a rotor area exceeding 5 m2 and up to and including 200 m2:  IEC 61400-22:2010 Wind turbines - Part 22: Conformity testing and certification

Type and prototype certification of wind turbines with a rotor area over 200 m2:  IECRE OD-501:2018 Type and Component Certification Scheme.

Project certification of wind turbines with rotor area over 200 m2:  IECRE OD-502:2018 Project Certification Scheme.

Good to know

The guidance document is a good place to start, if you want to know more about technical certification and servicing of wind turbines. However, to understand the exact obligations and requirements that apply, it is necessary to read the executive order itself.

PDF | DA* | Guidance document

LINK | DA |  Executive Order

PDF | EN |  Executive Order

*An English version is to be published at a later date.

Technical standards relevant to safety and health

IEC 61400-1

Wind energy generation systems - Part 1: Design requirements. Edition 4.0 (2019-02-08)

Including: Corrigendum IEC 61400-1:2019/COR1:2019 Edition 4.0 (2019-09-16)

IEC 61400-2

Wind turbines - Part 2: Small wind turbines. Edition 3.0 (2013-12-12)

Including: Corrigendum IEC 61400-2:2013/COR1:2019 Edition 3.0 (2019-10-10)

IEC 61400-3-1

2019 Wind energy generation systems - Part 3-1: Design requirements for fixed offshore wind turbines. Edition 1.0 (2019-04-05)

IEC TS 61400-3-2 

Wind energy generation systems - Part 3-2: Design requirements for floating offshore wind turbines. Edition 1.0 (2019-04-05)

IEC 61400-4

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Wind turbines - Part 4: Design requirements for wind turbine gearboxes. Edition 1.0 (2012-12-04)

IEC 61400-5

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Wind energy generation systems - Part 5: Wind turbine blades2020 Edition 1.0 (2020-16-06)

IEC 61400-6

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Wind energy generation systems - Part 6: Tower and foundation design requirements. Edition 1. (2020-04-21)

IEC 61400-13

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Wind turbines - Part 13: Measurement of mechanical loads. Edition 1.0 (2015-12-21)

IEC 61400-23

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Wind turbines - Part 23: Full-scale structural testing of rotor blades. Edition 1.0 (2014-04-08)

IEC 61400-24

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Wind turbines - Part 24: Lightning protection. Edition 2.0 (2019-07-03)

Relevant technical standards for wind turbine safety and health following Annex 1 to the executive order.

Relevant links to international standards and procedures

LINK 

DANAK | THE DANISH ACCREDITATION FUND

LINK

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DS S-588 (DA) | Danish Standards Committee for wind energy systems

LINK

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EA | European co-operation for Accreditation

LINK

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IEC | International Electrotechnical Commision

LINK

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IEC TC 88 | IEC’s technical committee for wind energy generation

LINK

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IEC 61400 – Online Collection | Extracts of standards under IEC 61400

LINK

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IEC Webstore for TC 88 | Standards under IEC 61400 can be purchased via this page

LINK

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IECRE | IEC Renewable Energy

LINK

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IECRE Operational Documents | IECRE’s list of operational documents and guides

PDF

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IECRE OD-501 | IECRE’s operational document for type and component certification

PDF

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IECRE OD-502 | IECRE’s operational document for type and component certification project certification

LINK

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ISO 9001:2015 | International standardisation of quality management systems