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Cover
 12 Months Ended
Dec. 31, 2021
shares
Entity Addresses [Line Items]  
Document Type 20-F
Amendment Flag false
Document Period End Date Dec. 31, 2021
Document Fiscal Period Focus FY
Document Fiscal Year Focus 2021
Current Fiscal Year End Date --12-31
Entity File Number 001-14668
Entity Registrant Name ENERGY CO OF PARANA
Entity Central Index Key 0001041792
Entity Incorporation, State or Country Code D5
Entity Address, Address Line One Rua José Izidoro Biazetto
Entity Address, Address Line Two 158 – bloco A
Entity Address, City or Town Curitiba, Paraná
Entity Address, Country BR
Entity Address, Postal Zip Code 81200-240
Title of 12(b) Security Common Shares, without par value
Trading Symbol ELP
Security Exchange Name NYSE
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
Document Accounting Standard International Financial Reporting Standards
Entity Shell Company false
Entity Common Stock, Shares Outstanding 1,054,090,460
ICFR Auditor Attestation Flag true
Auditor Firm ID 1045
Auditor Name Deloitte Touche Tohmatsu Auditores Independentes Ltda.
Auditor Location Curitiba, Brazil
Class a issued capital member  
Entity Addresses [Line Items]  
Entity Common Stock, Shares Outstanding 3,128,000
Class b issued capital member  
Entity Addresses [Line Items]  
Entity Common Stock, Shares Outstanding 1,679,335,290
Business Contact [Member]  
Entity Addresses [Line Items]  
Entity Address, Address Line One Rua José Izidoro Biazetto
Entity Address, Address Line Two 158 – bloco A – CEP
Entity Address, City or Town Curitiba, Paraná
Entity Address, Country BR
Entity Address, Postal Zip Code 81200-240
Contact Personnel Name Daniel Pimentel Slaviero
Contact Personnel Fax Number 55 41 3331 4011
Contact Personnel Email Address ri@copel.com