Supplemental lighting is required to optimize plant growth, plant quality and ultimately profits in low light conditions such as mornings/evenings, winter days with low light levels, and cloudy days. Luckily, Ceres’ greenhouses are engineered with full spectrum UV glazings, so that artificial lighting is always supplemental.

Free the Sun

Understanding PPFD (Photosynthetic Photon Flux Density), DLI (Daily Light Integral), and PAR (Photosynthetic Active Radiation) are necessary in order to properly control the optimal amount, wavelength, and intensity of light for your plants during any stage of growth.

light comparison graph

LED Cannabis Grow Lights

  • Produces light by passing an electrical current through a semiconductor material
  • Up to 80% less energy than High-Pressure Sodium Grow lights (HPS)
  • Produces 90-130 Im/W, and converts 80-90% of that electricity used into PAR
  • Because of low heat loss, they can be placed closer to plants
hps lamp

High-Pressure Sodium Cannabis Grow Lights

  • Most commonly used form of cannabis grow lights found in greenhouses
  • Produces light in the orange-red spectrum (supports flowering and fruiting)
  • Relatively inexpensive compared to other lighting methods
  • Inefficient conversion rate (30% of electricity into usable light), the remaining is emitted as heat
plasma lamp

Plasma Cannabis Grow Lights

  • Light is produced by activating plasma through radio frequency emissions 
  • Produces 140 Im/W, and 93% conversion rate of electricity into useful light
  • Long life- 100,000 hours 
  • Expensive


Check out our Environmental Controls FAQ

Calculate Your Energy Savings

Find out how much you can save with Ceres Greenhouses compared to standard cannabis greenhouses.

Tell us about your project.