Outdoor Lighting: Cree supplies LEDs to Baytown; 'Street Fight'; San Francisco

Cree has announced that Baytown became the first city in the state of Texas to light freeways with LED fixtures mounted on double-arm 54-ft poles spaced at 270 ft. The company also announced the new LEDway High Output (HO) family that extends maximum output to 26,800 lm, enabling easy retrofit of 400W HID fixtures. Caltrans, meanwhile, is installing LED lighting on the new eastern span of the San Francisco, California Bay Bridge. The Rocky Mountain Institute has published a blog post on streetlights and the solid-state lighting (SSL) transition that calls into question utilities' motivation and also looks forward to how networked streetlight systems may evolve.

Baytown, Texas

Baytown, located just east of Houston, worked with the Texas Department of Transportation (TxDOT) on the freeway project that includes Interstate I10, the 330 spur, and State Highway 146. First the city performed a trial monitoring the light output of six 400W high-pressure sodium (HPS) fixtures over the course of three months and then replacing them with Cree LED fixtures and taking similar measurements. The test program that was initiated in 2010 led the city and TxDOT to choose SSL for the larger lighting project.

Both potential energy and maintenance savings factored into the decision-making process. TxDOT had data that showed relamping cost of HPS lighting along freeways to be $130 to $150 with the actual cost to a municipality even higher due to added labor costs. Moreover, the typical HPS light on a freeway must be relamped every two years. Patti Jett, public affairs coordinator for Baytown, said, "The cost savings have directly offset other important budgetary items, while reduced maintenance needs allow staff to work on other projects city-wide. The lighting upgrade has certainly impacted taxpayer dollars in a very positive way."

The city of Baytown, Texas has installed around 350 Cree LEDway streetlights on freeways.
Cree LEDway streetlights in Baytown, Texas

The lighting retrofit, however, has also delivered improved light quality. The city said that law enforcement agencies have indicated the SSL installation has created a safer nighttime environment and that other motorists have commented about the enhanced visibility and elimination of shadows.

LEDway High Output

While the Baytown installation uses the Cree LEDway SeriesE products that top out at around 24,000 lm, Cree has just announced the LEDway HO series with slightly higher output. Moreover, the HO line uses the larger LEDs and one-piece optics initially brought to market in the XSP line of products in April 2012. By molding all of the total internal reflection (TIR) lenses into one piece, Cree was able to reduce the price of the streetlights. Indeed, the same technology is used in the sub-$100 XSPR street light that is designed for residential applications.

The new HO family also includes the ability for a municipality to adjust the light output at installation time and precisely match the light level required for a specific installation. Users can set the lights to as little as 60% of full scale and realize commensurate energy savings while enjoying the logistical benefits of stocking a single product for usage in different conditions with varying pole spacing and mounting heights. We have a more detailed description of the usage scenario in a LEDway HO article on our Illumination in Focus website.

Street Fight

Despite the benefits of LEDs for streetlighting, not everyone is on board with SSL technology. Some utilities still view the SSL transition as a movement that could reduce the revenue stream they enjoy from owning and powering streetlights and charging municipalities for energy used on a flat-rate basis and for maintenance. The Rocky Mountain Institute (RMI) detailed the conundrum on its RMI Outlet blog in a post entitled "Street Fight".

RMI's mission is to "drive the efficient and restorative use of resources" and the blog post notes that some utilities aren't necessarily on board with many cities' desire to assume ownership of their streetlight inventory and pocket the savings. Moreover, the ongoing movement to network streetlights could result in even more opportunity for new services including data networking services available to the public.

The authors speculate that the computer networking industry may ultimately get involved and mentioned networking stalwart Cisco specifically by name. At the 2014 Strategies in Light show, scheduled for February 25–27 in Santa Clara, California, Cisco business development manager Matt Laherty will present a talk entitled "Light as a service" so the company clearly has its eye on the potential for participation in the SSL transition. Back to the blog, it's a very interesting read.

San Francisco Bay Bridge

In San Francisco, the California Department of Transportation (Caltrans) is using LED lighting to create a cathedral-like aesthetic for the new eastern span of the Bay Bridge. The San Francisco Chronicle reports that LED fixtures costing in the range of $2 million have been installed on the suspension cables but that the main tower remains too dark and more lights will be added to the project.

Howard Brandston handled the lighting design and was previously responsible for lighting the Statue of Liberty. The custom fixtures were made by Musco Lighting. Previously the western span of the bridge was lit as the centerpiece of The Bay Lights Project with dynamic control of Philips Color Kinetics fixtures and programming by artist Leo Villareal. But that project was paid for by private funds.

RELATED COMPANIES

Zierick Manufacturing Corp

Offers innovative solutions for interconnect applications. Specializes in wire-to-board and board-to-board applications. Provides surface mount and thru-hole products while further reduci...

Cree Inc

Leads the LED industry in performance, brightness and reliability with its XLamp LED family, enabling the lighting industry with efficient, environmentally-friendly LEDs that produce beau...

InnoLight sp zoo

EU located lighting manufacturer for LED GU10 5W 600lm CRI>80 reflector, great performance, and LED E27 5W 380lm classic traditional appearance.

CSA Group

A global solutions provider of product testing and certification services for electrical, mechanical, plumbing, gas, medical and a variety of other products.

Energy Efficient Lighting

Energy Efficient Lighting offers total solutions to both conventional and more advanced LED lighting fixtures and LED retrofit kits for commercial and industrial applications.

Schréder

48 companies worldwide, passionate about light and innovation, experts in developing LED lighting solutions for safe and comfortable environments with significant energy and cost savings,...

Guardian Industries

Guardian Industries Corp. is a leader in float glass, fabricated glass and high performance coated glass products. Guardian lighting solutions deliver optimal performance, flexibility and...

ELMA Electronic Inc

Provides standard and customized LED solutions. Elma's LED family offers consistent, reliable, and durable illuminating and indicating solutions.

LEDSAmerica Inc

LedsAmerica is a full line LED line company and has manufacturing in Iowa where T8 LED-O tubes and street lights are made together with PL, PARs, High Bay lights. MAx

Lumentra Inc

Provides NVLAP accredited optical (photometry, colorimetry, Lumen maintenance), thermal (mapping and transient analysis), electrical characterization services, product development, supply...

CINCON USA

The LED, DC-DC and AC-DC power supplies from 1W - 1600W. Cincon’s lighting controllers, interfaces and devices incorporating DALI protocol. LED drivers from 25W - 150W with international ...

LTF LLC

LTF, LLC is a U.S based solid-state lighting product development and manufacturing company with facilities located in both USA and China.

Marian Inc

Marian is a global company who supplies die cut and converted parts to the LED market. Materials include thermal pads, reflective, venting, gaskets, insulators, diffusers and more.

Colorimetry Research

Specializes in the field of optics, manufacturing, electronics and software enables us engineer products with the right balance of hardware and software.

eldoLED America Inc

Designs and manufactures drive solutions for LED based lighting systems. Our technologies empower our customers to deliver the promise of LED lighting.

Cirrus Logic Inc

Cirrus Logic develops high-precision, analog and mixed-signal integrated circuits for a broad range of innovative customers across a variety of energy-related applications, including the ...

LEDSupply

Established in 2002 as an ecommerce store for all your LED product needs.

CINCON

Designer and manufacturer of custom and industry standard LED, DC-DC and AC-DC power supplies from 1W to 1600W. Cincon also designs and manufacturers lighting controllers, interfaces...

Illumination Machines

Illumination Machines designs custom optics, heat sinks, and remote phosphor systems for LED luminaires and lamps.

eldoLED BV

eldoLED is a world leader in the design and manufacture of intelligent drive solutions for LED based lighting systems. Our technologies empower our customers to deliver the promise of LED...

RELATED PRODUCTS

Cree XLamp® XP-L LEDs-the industry’s highest efficacy single-die LED.

Cree® XP-L LED is the first commercially available single-die LED to achieve up to 200LPW at 350mA. The XP-L enables 50% or more performance increase as a drop-in upgrade.

Surface Mount Wire Gripper - Part Number 1301

The Zierick 1301 is designed to allow customers to easier terminate a stripped wire to a PCB. Wire sizes to 24 AWG. Terminal is UL Recognized.

Surface Mount Wire Gripper - Part Number 1262

The Zierick 1262 is designed to allow customers to easier terminate a stripped wire to a PCB. Wire sizes from 0.025" to 0.095". Terminal is UL Recognized.

Unlock new LED lighting solutions with Cree High Density LEDs

Cree® High Density LEDs deliver the industry’s highest optical control factor enabling lighting manufacturers to improve performance, cost and size of LED lighting—enabling never before p...

Cree CXA LED Array Family

Cree’s CXA LED Arrays are optimized to simplify design and lower system cost, delivering high lumen output and efficacy with a family of single, easy-to-use arrays.

Cree LED Modules

Cree LED modules deliver beautiful, consistent light, backed by a 5-year warranty. They offer a choice of dimming options, while reducing the lighting power load by 80%.

Cree XLamp® XM-L2 EasyWhite® LED

The first 5mmx5mm LED to enable color-consistent 50W halogen performance; the XM-L2 EasyWhite delivers 1,100 lumens and is optimized to replace halogen technology.

Surface Mount Insulation Piercing Terminals

Surface Mount Wire-to-Board terminals available for wire gauges ranging from 24 to 14 AWG. Parts can be terminated to allow daisy-chain applications. Eliminates difficulty with direct...

P3 Indoor Full Color LED Display Video screen

High-density pixel pitch,high resolution,high refresh rate,magnificent and high-definition image and video effect.P3,P5,P6,P7.62 to P10 available.Epistar SMD LED,wide viewing angle.High r...

LED Panel Light

Designed to replace T8 fluorescent tube or Phillip Grille light.Epistar 3528/3014 SMD LED.Aluminum alloy body.Even and Soft light beam.Various mounting means.50,000 hours lifetime.Environ...

Rotatable LED Down Light, beam angle adjustable 10-60°

Beam angle adjustable 10-60 degree.Shell can rotate 360°,vertical 0-40°.High power CREE LED,even and uniform light output,Die casting aluminum alloy housing,good heat sinking.Widely used ...

Solar LED Paver Light

100% solor powered.No wires, no electricians.Super capacitors instead of battery,maintenance-free.Absorb sunlight in daytime and illuminate 8-12 hours during night. Epistar LED.Activation...

T8 LED tube light

Epistar Super bright 3528/2835 SMD LED.Aluminum alloy body with plastic cover.Consist with traditional fluorescent tubes.Easy mounting.PF>0.90,CRI>72,Over 60% energy-saving,Low degradatio...

LED light Bulb – LED spotlight

The AR111,GU10,MR16,PAR30,PAR38 LED bulbs are ideal replacement of 10-75W halogen or CFL bulbs.Cree/Everlight LEDs.PMMA lens.Aluminum housing.Good heat dissipation.Surface temperature les...

Super bright Injection LED modules

Housed by ABS material,covered by epoxy resin on surface with good insulation.Beautiful appearance.Waterproof.Anti-fire.Super bright 5050/3528 LED.12V voltage.Ideal light source for backl...

Flexible LED screen - Rental and Stage LED billboard

Special design,flexible use,light weight,super slim,transparent,SMD technology,easy to install.Can realize any curved and creative installation horizontally and vertically.IP65 protection...

LED flexible strip and aluminum LED bar

Full range of LED strip and bar including the unique high lumen strip. Protection degree up to IP68.Epistar 3528/5050 SMD LED.Compliant with CE & RoHS.2-year warranty.3528: 60LED/m,120LED...

iVAR COB LED Downlight

iVAR COB LED Downlight use die-casting magnesium alloy to make the main body,has Excellent heat dissipation performance,and Unique and delicate looking design.

LIMS - Liquid Injection Molding System

Silicone LIMS can be used to injection mold silicone components such as lenses or gaskets in an automated process. The two-component, thermoset material ranges in Shore A hardness from 5-80.

360 degree 10W led bulb

360 degree 10W led bulb has high efficiency, high power factor,environmental friendly, unique heat-dissipating design and perfect thermal management.

TOPIC INDEX

CONNECT WITH US

                

SOCIAL ACTIVITY

UPCOMING EVENTS

  • List View

NEWSLETTERS

LEDs Magazine Newsletter

Our weekly flagship news source
SUBSCRIBE

Product Focus

Monthly newsletter
SUBSCRIBE

Illumination in Focus

Bi-monthly newsletter
SUBSCRIBE

  •  
  •  
  •  
Copyright © 2007-2014. PennWell Corporation, Tulsa, OK. All Rights Reserved.