v3.26.3
VARIABLE INTEREST ENTITIES (Tables)
9 Months Ended
Sep. 30, 2026
Variable Interest Entity or Potential VIE, Information Unavailability, Disclosures [Abstract]  
Schedule of Consolidated Variable Interest Entities
Assets and liabilities of the Springerville Partnership that are included in Tri-State's consolidated statements of financial position are as follows (dollars in thousands):
September 30,
2026
December 31,
2025
Net electric plant$605,335 $635,777 
Noncontrolling interest129,358 130,132 
Long-term debt171,657 172,158 
Accrued interest1,999 4,997 
Tri-State's consolidated statements of operations include the following Springerville Partnership expenses for the three and nine months ended September 30, 2026 and 2025 (dollars in thousands):
Three Months Ended September 30,Nine Months Ended September 30,
2026202520262025
Depreciation, amortization and depletion$10,147 $10,147 $30,442 $30,442 
Interest2,828 2,839 8,493 8,525