Dimming is not listed in the mandatory controls provisions of ASHARE/IESNA Standard 90.1-2001. Can dimming contribute to the lighting power density savings needed to qualify for the Commercial Buildings tax deduction?
Dimming strategies such as load shedding, daylight harvesting or adaptive compensation are not recognized as methods to reduce lighting power density (watts/sq. ft.) using the conventional methods specified in the 90-1 standard, but can be when using the energy cost budget method. The energy cost budget method requires computer modeling. In addition, dimming may be considered as satisfactory for the bi-level switching requirement. (Source: http://www.lightingtaxdeduction.
Related Questions
- Dimming is not listed in the mandatory controls provisions of ASHARE/IESNA Standard 90.1-2001. Can dimming contribute to the lighting power density savings needed to qualify for the Commercial Buildings tax deduction?
- I heard that the ASHRAE/IESNA 90.1-2001 standard was amended to adopt the lighting power densities in the 90-1-2004 standard, which are stricter. How is this addressed by the Commercial Buildings tax deduction program?
- Is ASHRAE/IESNA 90.1 a voluntary or a mandatory building energy standard?
