Tri-State's mission is to provide our member systems a reliable, affordable and responsible supply of electricity in accordance with cooperative principles.
For the third year in a row, Tri-State Generation and Transmission Association announced that wholesale rates for its 43 member systems will not incre...
Basin Electric Power Cooperative, Tri-State Generation and Transmission Association, and the Western Area Power Administration (WAPA) announced Sept. ...
5,665 MILES OF LINE
1.3 MILLION CONSUMERS