Sign & Digital Graphics

The 2015 LED & EMC Report

Issue link:

Contents of this Issue


Page 4 of 31

L E D & E M C • June 2015 • 5 stations, grocery stores, clothing stores, hardware stores and pharmacies, to name a few. In addition, there are more than 800,000 banking, finance, insurance and real estate establishments (NAICS code 52-53) and 650,000 hotels and motels (NAICS code 72). Those business cat- egories alone account for more than 2.5 million establishments. The percentage of these establishments that own cabinet signs is unknown, but it is safe to say that the retrofit opportunities are practically boundless. Cabinet Sign Retrofit Objectives The success of any retrofit revolves around annual cost savings. A key metric in any retrofit proposal is the return on investment that in this case is measured in years. ROI is calculated by dividing the cost of the retrofit by the total annual cost savings the retrofit will deliver. Make sure to include all annual operat- ing expenses for the sign, not just energy savings, and apply any and all available rebates, to improve the ROI. Energy consumption, installation costs, operating costs, lumen output, color consistency and longevity are the most critical performance characteristics to cabinet sign owners. Selecting the LED sign lighting system that delivers the best combination of those characteris- tics will determine the success of each retrofit. However, not all LED systems are UL Classified for retrofits, so be sure to select one that is. The key elements to a successful sign retrofit that delivers a satisfactory ROI are: • Energy performance • Maintenance expense reduction • Retrofit cost • Proper illumination Energy Performance If energy reduction is the main objec- tive of a retrofit, illumination properties must also be included when choosing the appropriate LED sign lighting system. The ability to deliver maximum lumen output with the minimum consumption of energy is the true indicator of system performance. System efficacy, as the indi- This before and after shows how the cabinet sign above the entryway was also retrofitted with LED lighting. cator is called, is measured in lumens- per-watt. It shows how much energy will have to be consumed to deliver a given lumen output. Simply compare the energy consumption of different LED systems at the same lumen totals to select the best lumen-per-watt performance. Typical energy savings vary based on the efficiencies of the LED sign lighting system selected, but fluorescent–to-LED cabinet sign retrofits should result in a 50-90 percent savings. A recent retro- fit of a pylon sign for a Shell station in Connecticut resulted in an energy con- sumption decrease from 1,920 watts to 229 watts. That's an 88 percent energy reduction, resulting in $1,043 savings per year to the business owner. In addition, the contractor applied for and received a $2,018 rebate for this single sign.

Articles in this issue

view archives of Sign & Digital Graphics - The 2015 LED & EMC Report