This case study summarizes the GLASE research team findings from a field demonstration of the “Real-Time” Light and Shade System Implementation (LASSI) lighting control algorithm at an Orange County, New York greenhouse for a 12-month period in 2024 and 2025.
Real-Time (RT) LASSI Case Study
The main objective of the LASSI control system is to provide a consistent Daily Light integral year round, and at the lowest cost. It typically meets this goal through a combination of a properly sized lighting system (typically an intensity of at least 150 to 180 umol/m2/s) at the crop level, and a shade control system to limit the light during the brighter parts of the year.
Working within the limitations of the intensity of the supplemental lights and reduced hours of lighting available, the LASSI algorithm was able to meet the target of 15 Mols/m2/day approximately 8% more often than the existing control system, on days where supplemental lighting was necessary.
