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Cover
 12 Months Ended
Dec. 31, 2020
shares
Cover [Abstract]  
Entity Registrant Name ENERGY CO OF PARANA
Entity Central Index Key 0001041792
Document Type 20-F
Document Period End Date Dec. 31, 2020
Amendment Flag false
Current Fiscal Year End Date --12-31
Entity Well-known Seasoned Issuer Yes
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Filer Category Large Accelerated Filer
Entity Emerging Growth Company false
Entity Shell Company false
Document Transition Report false
Document Shell Company Report false
Document Annual Report true
Entity Interactive Data Current No
Entity Incorporation, State or Country Code D5
Document Accounting Standard International Financial Reporting Standards
Entity Common Stock, Shares Outstanding 1,450,310,800
Document Fiscal Period Focus FY
Document Fiscal Year Focus 2020
Auditor Attestation Flag true