Luminous Efficacy Standards for General Purpose Lights

July 07, 2021


Assembly Bill 178, adopted in June 2007, established efficacy* standards for general purpose lights sold in the state of Nevada. The bill set the required efficacy at 25 lumens per watt (lm/W) of electricity, and that standard will be in effect between January 1, 2012 and December 31, 2015. According to the legislation, the Director of the Office of Energy must adopt regulations to establish a new minimum standard to take effect on January 1, 2016, which must exceed the provisional standard of 25 lm/W. As used in the legislation, general purpose lights include "lamps, bulbs, tubes or other devices that provide functional illumination for indoor and outdoor use. The term does not include specialty lighting or lighting necessary to provide illumination for persons with special needs." NRS 701.260 updates the previous standard, so that by January 1, 2020, the minimum standard of energy efficiency established by the director must meet or exceed 45 lumens per watt of electricity consumed. 

*Efficacy refers to the overall energy efficiency of light and is measured in lumens (measure of light output) per watt (measure of power input). The efficacy of a typical incandescent light bulb ranges between 12 lm/W and 18 lm/W. The efficacy of a typical compact fluorescent bulb is between 45 lm/W and 60 lm/W.

Program Overview

Implementing Sector: State
Category: Regulatory Policy
State: Nevada
Incentive Type: Appliance/Equipment Efficiency Standards
Web Site:
Start Date:
Eligible Renewable/Other Technologies:
  • Lighting
Equipment Requirements: On and after January 1, 2020, no general service lamp may be sold in this State unless it meets or exceeds the minimum standard of energy efficiency established by the Director pursuant to subsection 45 for lumens per watt of electricity consumed
Test Methods: Tested in accordance with the test procedures for general service lamps prescribed by 10 C.F.R. 430.23
Implementing Agency: Nevada Governor's Office of Energy


Name: NRS § 701.260
Date Enacted: 6/14/2007
Effective Date: 1/1/2012


Name: General Information
Organization: Office of the Governor
Address: 755 N Roop, Suite 202
Carson City NV 89701
Phone: (775) 687-1850

This information is sourced from DSIRE; the most comprehensive source of information on incentives and policies that support renewables and energy efficiency in the United States. Established in 1995, DSIRE is operated by the N.C. Clean Energy Technology Center at N.C. State University.