National Energy Codes

State Energy Codes

Energy Code Compliance

The national energy code standards (ASHRAE/IESNA) 90.1-1999 is the national baseline for many energy oriented programs. As a minimum, the lighting control in the building must comply with the energy codes regulating each project. The first step in compliance is to identify the applicable energy code. The map below illustrates the energy codes adopted by each state.
The Department of Energy has recognized ASHRAE 90.1-2004 as the new national energy standard, superseding 90.1-1999 requiring all states to comply by December 30, 2010.

Significant Updates for 
ASHRAE 90.1-2004

Change to recognized methods for automatic lighting shutoff and new exceptions.
Every enclosed area must have independent control over the general lighting. That local control cannot override the automatic shut-off for more than four hours.
Complete replacement of interior lighting power density allowances.
Revised exterior lighting power density allowances.
Addition of occupancy sensor requirements for classrooms, meeting rooms and lunch rooms.

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