Publications

Publications

Blog articles and technical whitepapers from the GLS team — the research and the economics behind our LED fixtures.

01 / Case Studies

Case studies from the field

02 / Blog Articles

From the GLS blog

03 / Whitepapers

Technical whitepapers

Research

Beyond Light Intensity: Cannabis Yield, Canopy Performance and Lighting Economics

A peer-reviewed University of Guelph study found cannabis flower yield kept rising from roughly 120 to 1,800 µmol/m²/s of canopy PPFD while cannabinoid concentration held steady. This paper examines what those findings mean for commercial lighting design, photon delivery and the economics of a cultivation facility.

9 pages · PDF
Technical

Beyond PPF: Engineering Light Uniformity for Commercial Cultivation

PPF describes the photons a fixture emits, not the light a crop receives. This paper explains how geometry, mounting height, spacing and overlap determine delivered PPFD and uniformity, and why a modelled lighting plan is the only reliable basis for comparing fixtures.

5 pages · PDF
Power

Remote vs. Local Power: Designing More Efficient Grow Facilities

Where power conversion happens changes heat load, service access and electrical design. This paper compares conventional local drivers with PROGROW Drive remote power, examines distribution losses and total cost of ownership, and sets out when each architecture fits a facility.

5 pages · PDF
Spectrum

Full-Cycle vs. Supplemental Spectra: Matching Light Quality to the Growing Environment

Spectrum is both an energy source and a biological signal, and the right recipe depends on whether a crop is lit entirely by fixtures or supplemented alongside sunlight. This paper covers wavelength roles, the GLS HI-RED and Red-Dominant Supplemental spectra, and how spectrum interacts with intensity, efficacy and economics.

6 pages · PDF