One of the nation’s largest schools serving over 60,000 students, the University of Minnesota (U of M) is upgrading the lighting at all 18 parking ramps and garages on its Minneapolis campus. In the Northrop Auditorium Garage, a small 24,000 square foot facility with 75 parking spots, U of M replaced low-wattage high-pressure sodium fixtures with high efficiency, lower- wattage LED fixtures with lighting controls. This Lighting Energy Efficiency in Parking (LEEP) Campaign Award winning project achieved 90% energy savings by upgrading to LEDs with lighting controls.
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NorthBay VacaValley Hospital completed lighting retrofits to their 150,000 square foot parking lot and its 225 parking spaces. They did so with help from The California Lighting Technology Center (CLTC) at the University of California, Davis. The project has achieved 65% savings and received a 2014 Lighting Energy Efficiency in Parking (LEEP) Campaign’s award for best use of lighting controls. In addition, the retrofits improved lighting maintenance operations and end-user satisfaction.
The lighting retrofit included replacing roughly 50 induction luminaires with new LED fixtures with embedded lighting controls.
The new LED fixtures were coupled with various kinds of lighting control systems, including a radio frequency (RF) connectivity control system that was installed in dedicated zones with passive- infrared (PIR) and long-range microwave sensors to achieve energy savings. An “ultra-smart” lighting control network was also put in place, giving facility managers the ability to adjust lighting schedules, light levels and time-out settings, monitor the system’s energy use, and receive automated alerts when luminaires require maintenance.
When it comes to achieving significant sustainability gains, an international retail giant has unique opportunities to cut energy use. With a total of 4,500 sites, Walmart’s commitment to efficiency in parking lighting in new construction and retrofits is paying off in major savings.
As a result of its lighting upgrades Walmart received individual Lighting Energy Efficiency in Parking (LEEP) Campaign awards for a superstore, a neighborhood market and a Sam’s Club. Across 100 stores including both new and retrofitted sites, over 40 million square feet in surfaces for parking and over 100,000 parking spaces, Walmart is saving over 15 million kWh each year as a result of lighting upgrades.
This 17-page guide from the Rocky Mountain Institute and Johnson Controls recommends 8 steps to achieve net zero energy in existing buildings. Four case studies are used to illustrate the concepts.
Six-page case study of the Santiago High School Science Building and the Ralston Intermediate Building K: Multipurpose Room and Kitchen retrofits. These projects are classified by NBI as “ZE emerging”—they have a stated ZE goal, but their performance has not yet been verified with 12 months of energy use and generation data.
Four-page case study of the Los Osos Middle School zero energy retrofit, which is classified by NBI as “ZE emerging”—it has a stated
ZE goal, but its performance has not yet been verified with 12 months of energy use and generation data.
Six-page case study of Newcastle Elementary School ZE retrofit, which is classified by NBI as “ZE emerging”— it has a stated ZE goal, but its performance has not yet been verified with 12 months of energy use and generation data.
Website with information on what is anticipated to be the first
zero energy renovation of an existing building in the District
of Columbia. This building is one of the first in the United States to use sewer heat recovery (an energy technology that is more common in Europe.)