Customers of Idaho Power over the weekend were hit with a 12.5% rate increase – the fourth highest cost adjustment ever in Idaho – being blamed on a variety of factors. However, Brian Tanabe of Lower Valley Energy serving Jackson Hole and parts of Sublette and Lincoln Counties says while the cooperative’s board is anticipating they too will have to impose a rate increase, it will not be as large. Tanabe says while the same federal entity that provides the power to Idaho Power as well as to Lower Valley Energy is increasing rates, Bonneville Power Administration is forecasting an increase of 10% in October. He says Lower Valley is conducting a cost-of-service study to examine how it is purchasing and distributing the power and how that will affect rates to its customers, and the current best estimate is this fall’s rate increase will be between four and eight percent. Tanabe says more will be known about adjustments Lower Valley will face later this month.