WattStopper launches free online energy savings calculator for occupancy sensors

by AF 0928 c3 — September 30, 2009 – WattStopper has launched what it calls the first free, Web-based energy savings calculating tool that allows users to calculate the potential energy savings available with occupancy sensors. The WattStopper Lighting Energy Calculator is designed to help users identify lighting control strategies that best match energy savings goals for retrofit or new construction projects, says the company.

The calculator provides a list of pre-defined Lighting Control Measures (LCMs) that helps users compare control methods to identify how best to achieve maximum energy lighting savings. LCMs include pairing an occupancy sensor with an on/off wall switch, bi-level switching, bi-level switching with Auto-on 50 percent, or bi-level switching using Auto-on 50 percent with daylighting.

Energy savings percentages are based on third party published documents and research from the Department of Energy (DOE), Environmental Protection Agency (EPA), the Lighting Research Center (LRC), the California Lighting Technology Center (CLTC), and other industry case studies. Future versions of this tool will include calculations for plug/receptacle load control, daylighting and time-based controls, says Wattstopper.

The Energy Calculator offers two assessment levels – Quick Assessment and Full Assessment. The Quick Assessment allows users to enter a minimal amount of information and quickly calculate potential energy savings for a single room in a lighting system project with lighting controls. The Full Assessment presents anticipated savings, energy use and return on investment using lighting controls and updated lighting for an entire building project. Users can perform this assessment for multiple projects and retain data for future reference. Reports can also be personalized for use in submittal packages and proposals.

For more information, see the Web site.