Lighting control requirements will drive building energy reductionIllumination in Focus, September 25, 2014
Buildings consume nearly 40% of the world’s energy, and in the past 20 years the building industry has focused on sustainability, efficiency, and practical energy-saving solutions for both new construction and retrofits. Energy for lighting represents a disproportionately large share of building energy consumption. The lighting industry is making steady progress toward sustainability via efficient LED-based products and networks and adaptive controls. Still, lighting designers and specifiers are faced with meeting ever-more-stringent regulatory standards for lighting projects. We will discuss the most demanding requirements here – particularly in terms of required controls and the ASHRAE 90.1-2013 requirements.
As the building industry moves slowly toward zero net energy – the goal of the Architecture 2030 (architecture2030.org) program and key in the roadmap of the US Department of Energy (DOE) – the industry is recognizing that lighting controls play a crucial role in energy conservation. According to the DOE, lighting is by far the largest end user of electricity in commercial buildings. It consumes 38% of a building’s total electricity use – approximately the same as space heating, cooling, ventilation, office equipment, and computers combined, according to a US Energy Information Administration study published in 2008.