This chapter provides default time-of-use tariffs that may be used for COMNET purposes that use cost as the metric. The COMNET valuation methodology provides default time-of-use rate schedules for electricity, gas, steam and chilled water. COMNET software shall incorporate these rates into the calculation procedure so that the default rate schedules are easily available to the user. The default rates simplify the process and provide a means to take credit for measures that have large savings during peak periods. Local utility rates may be used instead of the defaults when desired. The software shall have the capability to assign energy charges for different seasons, day types, and periods within the day. A procedure is provided at the end of this chapter to convert TOU energy costs to EPA source energy, for purposes that use EPA source energy as the metric. Appendix F describes the methodology used to create the TOU energy costs presented in this chapter.