Project History


Vasu Primlani [email protected]
(865) 215-2141

400 Main St., Room 598
Knoxville, TN 37902

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The City selected Siemens through a competitive procurement process that began in fall 2016.

The City issued a Request for Qualifications on October 26, 2016 inviting interested entities to submit statements of qualifications to substantiate their demonstrated experience and qualifications with regard to completing large scale street light replacement projects and their demonstrated capability of having successfully completed projects of similar size and scope. An evaluation committee reviewed the qualifications and selected qualified finalists to invite to respond to a Request for Proposals (RFP). The RFP was issued to finalists on January 9, 2017 and requested detailed proposals in which, among other things, firms described how they planned to accomplish the project, the luminaires they proposed to use, and their cost for the project as well as any optional pricing that may be desired by the City.


The City worked with KUB and other partners to develop minimum specifications for LED luminaires, drivers, performance/safety standards, and maintenance that reflect industry specifications and best practices for LED technology. In the RFP, the City did not specify a particular brand or model of LED luminaire, but rather requested that submitters propose specific luminaires that comply with the minimum specifications, are listed on the DesignLights Consortium (DLC) Qualified Products List, and which (in the proposer’s view) best meet the City's objectives for this project. 

The City's RFP requires firms to provide a minimum ten (10) year warranty for all components of the luminaire, including drivers (power supplies) and a ten (10) year warranty on finish and materials. In addition, firms shall provide a minimum twelve (12) Year Hardware Warranty for 20-year rated life photo cells, and shall provide a labor warranty for two (2) years from the date of project acceptance. 

One of the primary design considerations of concern to the City is the ability of the new LED system to meet or exceed existing lighting levels, with a goal of achieving ANSI/IES RP-8-14 where practical. To address this concern, the City's selected contractor must perform and deliver photometric analyses (stamped by a professional engineer) to verify existing conditions and confirm that proposed luminaires will meet or exceed the current lighting levels.

The City also desired to follow to the extent practicable the guidance of both the American Medical Association (AMA) and the International Dark Skies Alliance. Following this guidance, the City included minimum technical specifications requiring new LED luminaires to have a correlated color temperature of 3,000K nominal CCT (+/- 500), subject to proposed design that results in improved public safety with streets not under- or over- lit, improved color rendering, more consistent light levels and heightened detection distance. In addition, luminaires and housing must be fully shielded and installed in such a way that no light is emitted above a horizontal plane running through the lowest part of the fixture. Luminaires and housing shall also accommodate optional field-installed backlight control shields. Proposing firms were asked to describe how proposed luminaires – and the proposed approach to design – will adhere to the guidelines and best practices issued by the International Dark Skies Alliance, American Medical Association, and the Illuminating Engineering Society of North America.