Horticultural Lighting is the fastest growing segment of the LED lighting industry. Fueled by a continual rise in population, and availability of limited agricultural land, there is an increasing need for indoor grow spaces and greenhouses.

The "Horticulture Lighting Market by Technology, Application, Cultivation, Lighting Type, Offering, and Region - Global Forecast to 2023"  predicts the horticultural lighting market to grow from USD 2.43 billion in 2018 to 6.2 billion by 2023.

Traditional light sources, HID & fluorescent, have long been the trusted lighting solution for indoor grow facilities. However, with the advancements in technologies, LED grow lighting has erased early doubts and proven to be a vital and essential element in the horticultural industry.

Why LED grow lights?

In addition to significant energy savings, LED Horticultural Lighting provides growers with customization, modularity, and the ability to optimize plant growth and wealth. In a controlled indoor environment, LED grow lights produce higher yields for year-round grow cycles for plants, fruits, vegetables, flowers and legal cannabis.

An LED grow light system will generate the same or better illumination than a traditional lighting system, with less than half of the electrical energy input. With the reduced heat output of LED’s versus traditional lighting sources, the use of LED lighting will also help reduce the demand on the HVAC system, offering additional energy savings.

Where will LED Grow lights be installed? Vertical Farming: maximize every cubic foot of a growing space by utilizing vertically stacked structures to grow products in a tight, controlled space. Greenhouses: combine natural sunlight and artificial light, in addition to trapping humidity and moisture to emulate a true growing environment. Warehouses: An artificial growing environment that relies on the complete system of lighting and HVAC to best reflect an outdoor environment. With the increased demand for indoor horticultural farming, there will be an increase in demand for horticultural lighting design along with an array of questions.

• What are the important factors to consider when designing horticultural lighting? • How do I calculate the quantity of fixtures and spacing required? • What types of solutions are available for horticultural lighting? • What trusted manufacturers provide horticultural lighting?

Traditionally, when we think about lighting, we measure a fixture by the lumen output and how many foot candles are needed on a work surface. But for plant lighting, the important values to consider are Photosynthetic Active Radiation (PAR) the measurement of usable wavelengths for plants from the fixture, and Photosynthetic Photon Flux Density (PPFD) the measurement of active photons per second measured at the plant. These are the components that are going to help provide a greater and more robust yield.

To help calculate the appropriate levels, our in-house applications team utilizes AGI32 to perform horticultural lighting calculations based on the needs of the plant/project.

Our leading manufacturer of horticultural lighting, SpecGrade LED, utilizes a modular system that allows for the adaptation of the fixture based on the needs of the environment, as well as interchangeable parts to upgrade the existing fixtures as LED’s improve and new technologies arise. Their modular fixture Linea can also be used as a side lighter offering a new angle on the growing process to increase yields. SpecGrade LED has successfully worked with Ohio State University to provide them with the LED grow lights to improve the growth of their plants by providing the correct stable levels of PPFD. To read more about it, see the link below.

Whether you are looking to learn more about horticultural lighting or are designing an indoor grow space, we at SDLA are here to help you through this process and support you through the life of the project. We have the knowledge, resources and tools to assist you with designing horticultural lighting for your next project, let us know how we can help you grow.

DLC Website DLC – Horticultural Lighting Case Study The Ohio State University Case Study Horticultural Lighting