v3.26.1
Cover
Jul. 09, 2026
Cover [Abstract]  
Document Type 8-K
Document Period End Date Jul. 09, 2026
Entity Registrant Name Basin Electric Power Cooperative
Entity Incorporation, State or Country Code ND
Entity File Number 333-295074
Entity Tax Identification Number 45-0277395
Entity Address, Address Line One 1717 East Interstate Avenue
Entity Address, City or Town Bismarck
Entity Address, State or Province ND
Entity Address, Postal Zip Code 58503
City Area Code 701
Local Phone Number 223-0441
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Amendment Flag false
Entity Central Index Key 0000720515