Seeing Hoover Dam in a Whole New Light

One of the nation's most impressive national landmarks just became even more energy-efficient and aesthetically appealing, thanks to a recent lighting retrofit. For the past 30 years, Hoover Dam, a massive man-made structure saddling Nevada and Arizona across the Colorado River, has sported a yellowish glow—a result of high-pressure sodium fixtures.

07/01/2001


One of the nation's most impressive national landmarks just became even more energy-efficient and aesthetically appealing, thanks to a recent lighting retrofit.

For the past 30 years, Hoover Dam, a massive man-made structure saddling Nevada and Arizona across the Colorado River, has sported a yellowish glow—a result of high-pressure sodium fixtures.

But now that the 64 lamps formerly illuminating the dam have been replaced with 32 metal-halide fixtures, energy use has dropped 23 percent, and the dam wall now bathes in an attractive white light.

In addition to the impressive color rendering offered by the 1,000-watt metal-halide fixtures, the lamps provide better efficiencies due to a smaller outer jacket, better control and improved fixture optics.

"We have received numerous positive comments on this new lighting system," notes Harvey W. Boyce, a public utilities specialist with the U.S. Department of the Interior Bureau of Reclamation. "In this era of electric power shortages in the Western states, every kilowatt-hour saved by reducing our plant losses provides more energy to our consumers."

As the second largest producer of hydroelectric power in the United States, each of Hoover Dam's 17 generators has the capacity to power 100,000 homes. The generators are utilized to send electricity as far away as Los Angeles, through 2,700 miles of transmission lines.





No comments
Consulting-Specifying Engineer's Product of the Year (POY) contest is the premier award for new products in the HVAC, fire, electrical, and...
Consulting-Specifying Engineer magazine is dedicated to encouraging and recognizing the most talented young individuals...
The MEP Giants program lists the top mechanical, electrical, plumbing, and fire protection engineering firms in the United States.
Combined heat and power; Assessing replacement of electrical systems; Energy codes and lighting; Salary Survey; Fan efficiency
Commissioning lighting control systems; 2016 Commissioning Giants; Design high-efficiency hot water systems for hospitals; Evaluating condensation and condensate
Solving HVAC challenges; Thermal comfort criteria; Liquid-immersion cooling; Specifying VRF systems; 2016 Product of the Year winners
Driving motor efficiency; Preventing Arc Flash in mission critical facilities; Integrating alternative power and existing electrical systems
Putting COPS into context; Designing medium-voltage electrical systems; Planning and designing resilient, efficient data centers; The nine steps of designing generator fuel systems
Designing generator systems; Using online commissioning tools; Selective coordination best practices
As brand protection manager for Eaton’s Electrical Sector, Tom Grace oversees counterfeit awareness...
Amara Rozgus is chief editor and content manager of Consulting-Specifier Engineer magazine.
IEEE power industry experts bring their combined experience in the electrical power industry...
Michael Heinsdorf, P.E., LEED AP, CDT is an Engineering Specification Writer at ARCOM MasterSpec.
click me