As Andrew Hoerner, Energy Solution Sales Manager for Rexel, explains: "With the CR Series troffers, these high-efficiency fixtures were a great way to demonstrate the benefits of LED not only with energy savings, but we had the added benefits and attributes of controls tied into Title 24." Hoerner continues, "Rexel's Energy Service team identified Cree's SmartCast® Technology as the best fit for energy savings, ease of install, Title 24 compliance, rebate eligibility and end-user comfort. We were able to come up with the ultimate solution that the campus folks are very happy about."
Previously, SDCCD used on-bill financing with their utility SDG&E, paying for projects through energy savings. Now, SDCCD could fund the project completely through Prop 39, and as an added bonus, the Cree LED lighting solution also qualified for incentives from SDG&E.
Another key benefit of the Cree® LED lighting solution was the 75,000 to 100,000 hours life expectancy, offering huge maintenance savings. As Manis explains, "One of our main weighted categories was life of product. Now I don't have to send an electrician out but once every 10 years," allowing the facilities staff to divert the resources to other areas.
In terms of safety and security, the Cree SmartCast® Technology controls solution has been a boon. Manis explains: "In large offices, we've grouped the fixtures and occupancy sensors to accommodate people that work after hours. If they're working late in a remote corner, I grouped that office with the main office so those main office lights stay on." Manis continues, "One of the qualities we like is the ability to make adjustments. I like my lights on full blast. Next door, they want 80%. I'm still saving 20% on my energy use while the person next door is saving even more and they're happy with their amount of light. The ability to have a hand-held programmer controller allowed us to make adjustments quickly and easily."
As far as light quality, Doubleday states, "With fluorescent, you are constantly getting pounded with flicker. Because the Cree® lights are so much more consistent and there’s no flicker, the lights look brighter so we've had to make adjustments. We're using daylight sensing and we're dimmed below factory measurements, so we're getting additional estimated 25 to 30% savings at minimum as well as extending fixture life."