MEEKER I Tri-State Generation and Transmission Association of Denver, Colo., which supplies all of the power for White River Electric Association, Inc. (WREA), will be implementing a rate increase and change the way it bills the 44 member cooperatives effective Jan. 1, 2013. According to a recently completed independent cost of service study done for White River, the methodology change and the rate increase results in a 13.97 percent increase in the cost of power…

