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Tri-State Generation and Transmission Association, Inc.


Officers and directors

Ken Anderson
EVP and General Manager
Harold (Hub) Thompson
Jim Someren
Communications Manager


1100 W. 116th Ave.
Westminster, CO 80234
+1-303-452-6111 (Phone)
303-254-6007 (Fax)

Website links

OK, so it covers four states, but who's counting? Tri-State Generation and Transmission Association supplies wholesale electricity to 44 rural distribution utilities that serve about 1.5 million customers in Colorado, Nebraska, New Mexico, and Wyoming (New Mexico was a late addition to the association's service region). The member-owned cooperative has a generating capacity of about 4,250 MW primarily from its interests in fossil-fueled power plants, and it operates more than 5,300 miles of transmission lines. Tri-State Generation and Transmission also purchases power and sells its excess supply to non-member utilities.

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