Bi-Level Stairwell Lighting
Stairwell lighting typically operates continuously at full output despite very low, intermittent stairwell use. Simple occupancy controls are not used due to building code requirements that prohibit zero light levels, even when building egress spaces are unoccupied. Bi-level technology demonstrated by SPEED dims lamps to minimal building code requirements for occupied periods, yielding 40 to 80% annual energy savings. Over 20 years one fixture can yield savings of 10,000 kWh!

Two case studies document these results:

Improving Product Performance and Choice
More than thirty cutting-edge solutions are improving building energy performance in SPEED demonstrations across the state—including lighting, energy management, and heating ventilation and air-conditioning (HVAC) technologies. Results of performance evaluation are channeled back to the PIER RD&D program and participating manufacturers, along with suggested product improvements and derivative product ideas. Utilities participate as well, using demonstration results to inform their emerging technology and incentive programs, and leveraging SPEED market adoption efforts.

This collaborative process improves available technology and increases the choices for commercial and industrial applications. Among the success stories:

  • Bi-level exterior lighting and integrated office lighting are two of the many successful technologies that have been developed as a result of SPEED demonstration projects.
  • SPEED-generated product improvement recommendations to an LED desk lamp product—refinement of the on/off switch and elimination of radio interference—led to a higher-quality product, improving customer satisfaction and market success.