Finds and declares that meeting the state's future energy needs through conservation efforts, both large and small, is a priority. Small changes on the part of Washington consumers, such as switching from conventional, incandescent holiday lights to light-emitting diode holiday lights, has the potential to save hundreds of kilowatts of electricity each holiday season.

Declares an intent to encourage citizens to participate in cost-effective energy conservation by establishing efficiency standards for decorative light strings sold in the state.

Provides that no new decorative light strings manufactured after January 1, 2008, may be sold or offered for sale in this state unless the lights are light-emitting diode lights as required under RCW 19.260.040.

Authorizes the department to investigate complaints received concerning violations of this act. Any manufacturer or distributor who violates this act may be issued a warning by the director of the department for any first violation. Repeat violations may be subject to a civil penalty of not more than two hundred fifty dollars a day.