v3.26.1
REVENUE (Tables)
3 Months Ended
Mar. 31, 2026
Revenue from Contract with Customer [Abstract]  
Schedule of Revenue from Contracts with Non-member Customers and Other Operating Revenue The following revenue is reflected on Tri-State's consolidated statements of operations as follows (dollars in thousands):
Three Months Ended March 31,
20262025
Non-member electric sales:
Long-term contracts$46,822 $38,794 
Short-term contracts9,968 9,612 
Rate stabilization24,840 44,943 
Provision for rate refunds— (2,554)
Lease revenue11,041 7,320 
Transmission revenue19,159 17,610 
Other2,248 3,475 
Total non-member electric sales and other operating revenue$114,078 $119,200