# Commission Regulation (EU) 2017/1485 of 2 August 2017 establishing a guideline on electricity transmission system operation (Text with EEA relevance), Article 129: Criteria application process

Extent: E+W+S+N.I.

The criteria application process shall comprise:
(a)the collection of frequency quality evaluation data; and
(b)the calculation of frequency quality evaluation criteria.

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Source: https://www.legislation.gov.uk/eur/2017/1485/article/129 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-1485/article-129
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.