PROJ00035 - Laserfiche WebLink

Home Browse Search

ADDENDUM (Continued) . 3. Highlights of secondary benefits of the powerplant such as spinning reserve, load and frequency control, and high availability rates are explained below. As a result of availability, dependability, and flexibility of a hydropowerplant, capacity values have been increased by 5 percent. Specifically, spinning reserve is that reserve generating capacity connected to the bus and ready to take load. This provides the capa- bility to add additional power to the system in a short time frame. Also, hydropowerplants are capable of increasing and decreasing load output to maintain frequency control over a network of powerplants. 4. Rationale for use of an intermediate load powerplant for peaking power is explained in the following paragraphs. Intermediate load capacity and energy values were used based on the plant factor of the powerplant. The criterion used was that any powerplant having a plant factor of 0 to 17 percent was considered peakload, 17 to 37 percent intermediate load, and 37 to 100 percent base load. Because the plant factor of the pumpback powerplant is 23.7 percent, intermediate load values were used. . For the update to 1983 values, peaking benefits were used be- cause the pumpback storage powerplant would be used for peak demand situations. Capacity and energy benefit values 1983 Capacity!.! (dollars per Energy~/ kilowatt (mills per Plant type per year) kilowatthour) Baseload 161 31 Intermediate load 54 120 Peak load 34 157 l/ As a result of availability, dependability, and flexibility of a hydropowerplant, capacity values have been increased by 5 percent. ~/ Because the price of crude oil was expected to escalate, energy benefits were increased and values have been rounded to the nearest mill. . 3