ASHRAE is developing the 2010 version of Standard 90.1 with the goal of reaching 30% savings beyond the 2004 edition of the standard. Economics are used to inform the process of setting criteria and the assumed electricity rates are crucial to these calculations. Previously the committee used national average electrical rates in the criteria setting but recently a number of voices have been heard in support of using demand rates instead. This article explores the issues surrounding the use of a pure consumption rate vs. the use of demand rates and looks at the implications for HVAC equipment efficiency.
Revised: June 26, 2008 |
Published: April 30, 2008
Citation
Jarnagin R.E., M.F. McBride, C. Trueman, and R.J. Liesen. 2008.Demand or No Demand: Electrical Rates for Standard 90.1-2010.ASHRAE Journal 50, no. 4:14-16, 18, 20.PNNL-SA-60280.