Commercial + Healthcare LED Lighting
Research reveals that there is a wealth of significant arguments for Commercial & HealthCare LED lighting retrofits: the dominance of lighting loads in buildings, the age and poor performance of the lighting systems, the energy savings with excellent return on investment, the environmental benefits of measurably reducing electric power loads, and the human benefits of improving lighting quality for today’s work tasks.
LED Lighting Retrofits
Lighting is the most strategic investment for conserving energy and for improving the quality of visual conditions for task performance and health. The prioritization of investments will depend significantly on the condition of the existing lighting and daylighting assemblies, the ability to invest based on net present value (carrying costs) rather than first cost, and the commitment to environmental and human cost-benefits as well as the “hard” energy cost benefits.
Building Investment Decision Support for Energy Efficient LED Lighting Retrofits
Lighting is the largest electric load in Commercial buildings. Lighting end use intensities in Commercial buildings is second highest after heating. Approximately 60% of Commercial buildings were found to be lit after business hours while unoccupied.
Occupancy/vacancy sensors for closed spaces
The lowest cost high payback lighting retrofit action for building owners and managers is to install occupancy sensors in all closed spaces on the occupied floor. These spaces include closed offices, conference rooms, copy rooms, bathrooms, and storage areas, and account for over 25% of the floor area in most Commercial buildings.
Daylight harvesting for perimeter lights
The second cost-effective retrofit action for lighting energy savings is the installation of daylight sensors for on/off or dimming controls of the first and second rows of lights on each building facade. This modest investment in new controls for groups of lights ensures up to 35% energy savings through daylight harvesting, savings that are possible even in large, deep buildings with windows,
Human Equity cost-benefits
Are directly linked to improved lighting quality. An approach was refined using the United Nations Triple Bottom Line(TBL) standards, in which benefits are categorized in one of three categories relating to the three E‟s (1) Economic (2) Environmental (3) Equity, also often discussed as the three P‟s (1) Profit (2) Planet and (3) People. The TBL life-cycle benefits of each of the recommendations have been calculated in three successive “return on investment” groups to offer decision makers the choice of where they are willing to draw the line, with: hard‟ economic cost benefits in the first bottom line; environmental cost-benefits that may be legislated or incentivized in the second bottom line; and the human cost-benefits that should drive standards and investments in buildings in the third bottom line.
LED Light Quality
When selecting LED light sources, it is very important to specify: lamp efficacy, measured in lumens per watt, as well as the correlated color temperature and the color rendition index of the LED sources. This is because the high efficiency LED lamps are often characterized by high correlated color temperatures (CCTs), often above 5000K, that produce a “cold” bluish light. To achieve the warm white light that occupants prefer, the LED lamps must have lower CCT of 2600K to 3500K, which can compromise efficiency. LED lamp sources should also be selected by the Color Rendering Index (CRI). While CRI above 80 (on a 100-point scale) is considered acceptable for interior applications, CRI‟s above 90 provide the excellent color quality we have come to expect from incandescent lamps.
CLIFS™ Financing Allows You To Save Money from Day One
Customers are taking advantage of CLIFS™ smart financing solutions in upgrading outdated interior and exterior fluorescent/metal halide lighting to modern LED technologies in a manner that is cash-flow-positive from day one. Thanks to affordable financing terms, GAES is able to offer Turn-Key lighting projects – product and installation – at a total cost that is lower than what is currently paid on electricity bills.