Monitored lighting energy savings from dimmable lighting controls in The New York Times Headquarters Building

- Field study of dimming lighting controls in high-rise, open-plan office spaces.
- 28% energy savings relative to installed lighting power density (ASHRAE 90.1-2001).
- 20% energy savings relative to ASHRAE 90.1-2007.
- Dimming controls can be cost-effective if installed cost kept low.
- Calibrating control system data with measurements can improve reliability of results.