The city of Napa, California, is continuing to work toward increased energy efficiency through a new, large-scale, deployment of LED streetlights. This opportunity to save money and reduce energy consumption was identified through an earlier pilot program which included the installation of about 300 LED streetlights on three selected city roadways. The resulting success of this initiative led city officials to focus on a full scale replacement of all city owned streetlights as a means for significant cost savings and energy efficiency. The city issued a Request for Qualifications (RFQ) to identify a turn-key contractor to design, install, and administer the LED streetlight conversion.
“Our previous installation is saving the city about $22,000 each year,” said Phil Brun, deputy director of public works for the city of Napa. Based on the results of this pilot, which installed LED streetlight fixtures manufactured by BetaLED/Cree, of Sturtevant, Wisconsin, the city is moving forward with replacing approximately 4,500 existing high pressure sodium (HPS) and metal halide fixtures with energy efficient solid-state lighting. While previously comparing both LED and induction technologies, the city determined that LED technology is the preferred option for its streetlighting program. Once the installation is complete, the city expects to realize annual savings of about $170,000, according to Brun. The conversion to LED streetlights will reduce the city streetlighting energy consumption by about 50 percent. The current project is funded by a $1.9 million low interest loan from the California Energy Commission (CEC), and rebates from energy provider, Pacific Gas and Electric (PG&E).
The following is an approximate list of existing cobrahead fixtures targeted for replacement: 3,447 – 70 watt HPS, 325 – 100 watt HPS, 241 – 150 watt HPS, 124 – 200 watt HPS, 39 – 25o watt HPS, and 20 – 400 watt HPS. The city is also planning to replace about 311 decorative post top fixtures with LED fixtures. The exisiting decorative post tops include 70 watt and 150 watt fixtures. The RFQ specifies the Beta LEDway and Cree XSP series for the LED cobrahead fixtures, and Lighting Efficient Design, of North Barrington, IL, for the decorative LED post top fixtures.
“The timeframe for the streetlight project to be implemented and completed is between September 2013 and May 2014,” said Brun. Proposals from bidders who submitted an intent to respond will be evaluated with finalists selected on June 24, 2013. The project is expected to be awarded on August 6, 2013.