Interior Lighting Campaign Saves $85 Million in Energy Costs; Spurs New Focus on Integrated Lighting

By Better Buildings Beat Team on Feb 05, 2020

Through DOE’s Interior Lighting Campaign (ILC), building owner participants have replaced more than 3.5 million lighting systems, cumulatively saving roughly 800 million kWh of electricity per year (approximately the energy used by 80,000 U.S. homes) and $85 million in energy costs.

The 2015 – 2019 ILC outcomes report distills four years of results and lessons learned after reviewing more than 3,500 retrofit projects. Among the findings: the typical energy savings for replacing fluorescent or high-intensity discharge (HID) lighting with LED fixtures is 53% - before applying any savings from lighting controls. Figure 1 shows equipment savings by building sector.

Of the projects that provided cost-effectiveness information:

  • Many had a 3-to-5-year simple payback period;
  • Some projects had simple paybacks of 10 years or more; and
  • Replacing one fluorescent or HID light fixture with an LED fixture could save $20 - $50 annually as a result of reduced energy use.

The success of the ILC has spurred the Integrated Lighting Campaign. This new campaign focuses on advanced lighting control systems and on lighting that is integrated with HVAC, plug loads, other building systems, and non-energy benefits.

DOE hosted a webinar on February 6, 2020, to review the 2015-2019 campaign’s accomplishments and provide information about the new Integrated Lighting Campaign. View the recording and slides here.

The Interior Lighting Campaign is a collaborative effort from the U.S. Department of Energy, the General Services Administration, the International Facility Management Association, the interNational Association of Lighting Management Companies, and the Illuminating Engineering Society.