Commission Regulation (EU) 2017/1485 of 2 August 2017 establishing a guideline on electricity transmission system operation (Text with EEA relevance. ) Basic information In force CELEX number: 32017R1485 Official Journal: JOL_2017_220_R_0001 Form: Regulation Procedure number: -- Languages: bg cs da de el en et fi fr hr hu it lv lt mt nl pl pt ro sk sl es sv Dates Date of document: Date of publication: Date of effect: September 14, 2017 Entry into force - Date pub. +20 See Art 192 March 14, 2019 Application - Partial application See Art 192 April 27, 2019 Partial application - See Art 192 August 18, 2019 Partial application - See Art 192 Deadline: September 14, 2019 At the latest See Art 39.3 PT A) Modified by Modified by: Modifies Affected by case Legal basis EuroVoc Vocabulary Energy Professional qualifications Electricity Renewable energy General Electrical energy Energy distribution Quality standard Electricity supply Energy supply Technical standard Energy grid Security of supply