Southeast Idaho Load Service

The Southeast Idaho Load Service (SILS) is comprised of six statutory preference customers serving parts of Idaho, Wyoming and Montana. (The term “statutory preference customers” refers to entities that are entitled by statute to preference and priority to the power sold by BPA. See 16 U.S.C. § 832c(a); 16 U.S.C. § 839c(a).) BPA began serving SILS preference customers in 1963, when service to these and other public utilities was assigned from the Bureau of Reclamation to BPA.