LIGHTING FOR YOUR CULTIVATION ENVIRONMENT

urban-gro’s experience with warehouse and greenhouse lighting strategies helps you to maximize your space and reduce your lighting count and costs. .

Lighting Approach

urban-gro lighting design and products help maximize the yields and profitability of new and existing cultivation facilities.

At urban-gro, we are committed to providing the most cost effective, efficient light source to the plant canopy by focusing on the cost of umoles per photon delivered to the crop.

urban-gro is a U.S. distributor of P.L. Light Systems, the global leader in commercial horticulture lighting.

urban-gro supplies a large range of reflectors and fixtures. Each reflector has been developed to provide an optimum light distribution for cannabis crops depending on stage of growth and constraints within the building or greenhouse. Reflectors are used to ensure that the light penetrates deeper into the crop in the most efficient way possible. PL reflectors are designed with maintenance in mind –  they can be cleaned and do not need to be replaced annually.

Our detailed light plans prove it. urban-gro prepares a free light plan to ensure that light uniformity and light levels are adequate for your crop.

There are several other technologies that claim efficiency and power savings, but as growers report, and our own expert lighting team has witnessed, they fail to produce the correct intensity and uniformity needed to maximize plant yield.

Our professionally engineered plans (in conjunction with PL products) guarantee light levels measured in umol.

We invite you to embrace a better way to grow – your cannabis, your business, and your bottom line.

Science Meets Finance

Cannabis is a crop like any other, but it has unique technical, financial and legal considerations.

Learning Best Practices

Whereas all other crops have extensive research and study into best practices, legal cannabis is a brand new game, and thus lacks the multitude on studies on best practices given to other horticultural commodities.

Those who will be the most successful cannabis growers need to find and align themselves with experienced professionals who can help them make decisions that take into consideration their particular set of challenges.

Protect Your Investment

As a crop, cannabis has the highest cost per pound market value compared to tomatoes, corn or any other crop. This makes the investments to grow and protect a healthy crop and find ways to increase yield, important. However, as the prices for cannabis decrease, as more supply comes online, growers need to find greater efficiencies.

High Cost of Energy

Energy is one of the greatest ongoing costs for growers, making up well over 50% of overhead costs. Finding ways to get maximum production per square foot, and reducing the final cost of goods sold (COGS) is essential to yield a sustainable return on investment (ROI). Commercial grow facilities also require a significant capital invest both in terms of initial set up and ongoing upgrades and retrofitting. The choice of lighting is a key component.

Planning for Efficiency

At urban-gro, our cannabis lighting division not only sells the most respected lighting products in horticulture, we provide a comprehensive lighting system solutions for our clients. This includes working closely with clients to assess their situation and understand light level needs and power voltage and cost considerations to deliver the best cannabis lighting design plans and the corresponding product set. These light plans map the number of fixtures and their location to ensure the necessary light intensity and uniformity.

Capital Improvement

The design plans and financial planning involved in all of our client relationships, are of a high professional caliber to can align well with investor relations and capital planning. urban-gro prepares a free light plan to ensure that light uniformity and light levels are adequate for your crop. Our professionally engineered plans (in conjunction with PL products) guarantee light levels measured in umol.

Rebate Programs

Additionally we are able to share our experience in specific energy rebate programs for cultivation sites provided by companies such as Xcel Energy and other utility provides, the large incentives double-ended HPS fixtures often qualify for if applied properly, and ensuring the successful presentation of the application.

Four Essential Questions

To assess what type of lighting will be best for your grow facility, it starts by asking the right questions.

Four Essential Questions

When looking at cannabis lighting, growers should look at light output and light distribution as this intensity and uniformity will provide the greatest yields. But, while lighting output and light distribution are important metrics, light conversion efficiency is also a strong indicator of a successful grow set-up.  How much light is reaching your crop and how much is being wasted?

To the right are the four questions that a cannabis lighting professional from our team will lead with before making a recommendation. These are also questions you should be asking yourself as you go through the process of assessing how to design or retrofit your facility.

Understanding DLI

It starts by understanding DLI (daily light integral) which is the amount of PAR received each day as a function of light intensity (instantaneous light: μmol·m-2·s-1) and duration (day). It is expressed as moles of light (mol) per square meter (m-2) per day (d-1), or: mol·m-2·d-1 (moles per day).

The DLI concept is like a rain gauge. Just as a rain gauge collects the total rain in a particular location over a period of time, DLI MEASURES THE TOTAL AMOUNT OF PAR RECEIVED IN A DAY.

Greenhouse growers can use light meters to measure the number of light photons that accumulate in a square meter over a 24-hour period. In a greenhouse, values seldom exceed 25 mol∙m-2∙d-1 due to glazing, structure, shadowing. In a warehouse environment 100% of the light comes from lighting fixtures and can also be measured with a professional light meter.

Let Us Help You

Call or email us today to get started with your complimentary lighting plan for your commercial grow.

Four Essential Questions


  • What is the efficiency of the fixture? (measured in umoles/watt)

  • Is the spectrum correct for the stage of growth?

  • What is the intensity you are targeting for each stage of growth?

  • What is the capital cost per photon delivered to the plant canopy?

Get Your Free Lighting Plan
“As the Cannabis crop price decreases, it’s the efficient growers that will be successful. This starts with ensuring your lighting system is optimized for maximum plant growth.”Shelly Peterson

Why We Represent P.L. Light Systems

urban-gro is committed to distributing the best products for cannabis cultivators. As such, urban-gro is proud to be a U.S. cannabis sector distributor of P.L. Light Systems. Hortilux Schreder – parent company of PL, based in Holland and Canada, is the market leader in the professional horticulture market. With “almost” 40 years of lighting knowledge and experience and extensive research behind all of their offerings, PL develops and manufactures the most advanced horticulture fixtures on the market.

Other brands have gained a reputation as the “cannabis” light, but that evolved from them being popular in a basement/hobby setting. As the market expands and production facilities scale to match commercial production in line with other agricultural products – a more professional and proven lighting system is significantly more advantageous for higher efficiencies and maximum yields. All stages of cannabis growth from clone, vegetative or bloom, and all sizes of grow facilities—all are now able to be covered by the most respected professional horticulture lighting systems on the market.
P.L. Light Systems offers a complete range of innovative fixtures, lamps and reflectors for optimized light distribution in a variety of technologies including LED, High Pressure Sodium (HPS), Metal Halide (MH), Ceramic Metal Halide (CMH) and Hybrid Systems. For each lighting solution, we provide a comprehensive light plan to ensure optimized crop growth through adequate light penetration and uniformity into the crop. They share our commitment to staying at the fore-front of innovation and technology in Horticulture lighting sector. Our combined strength lies in how we translates growers’ requirements and new insights into cultivation techniques, transforming technical possibilities into reliable products.
As technologies change, it is essential proper planning is provided to ensure light levels are not compromised therefore affecting plant yield. For example, the light levels achieved by PL’s revolutionary HSE NXT2 fixture allow for the proper micromole output while using fewer fixtures and saving substantial energy.

Additionally, PL Light Systems does not recommend replacing reflectors every year. Due to the design of the fixture the reflector is easily maintained and can be cleaned with the proper instructions returning the reflectivity close to new on an annual basis.

By utilizing a high pressure sodium 1000w double ended lamp, growers can use approximately 20% less traditional 1000w Mogul based. Thus, equipment and light levels are improved. Additionally, the lamp is rated for 10,000 hours (~2 years in bloom) and will only degrade by 10%. The days of changing HPS lamps every 6 months to have adequate light levels are over.

All products we offer are UL, ETL or CSA listed to ensure our clients don’t have issues during the inspection process. Our installations are backed by a warranty supported by a Colorado-based service center.

UL Listed and available in 240V, 277V, 347V and 400V.

Learn more about process, products and light plan requests.

Lighting Tips for Grower Success


  • Plan lighting for all stages of Cannabis growth.

  • Plan your greenhouse supplemental lighting for December's lower sunlight levels.

  • Proper lighting can reduce heat loads which means smaller HVAC packages.

  • Plan carefully to reduce shading from structural elements.

Learn More

Lighting Study Results

PL Light HSE NXT2

The light levels achieved by PL’s revolutionary HSE NXT2 fixture allow for the proper micromole output while using fewer fixtures and saving substantial energy.

Here you can see how our NXT2 lighting system matches up against our closest competitors.

NXT2_Cannabis_Beta_light levels_against competitors

Recent analysis by an independent NVLAP accredited lab shows that the NXT2 leads the competition in lighting for cannabis crops. The testing shows that the NXT2 lamp provides 97.4% light conversion efficiency…well ahead of three competitors ranging from a meager 80% to 90% lighting efficiency. To maximize growth and profitability it is essential to do better that 90%.

NXT2_Cannabis_Beta_light levels results

The strong correlation between light intensity and yield, means directing as much PAR light as possible onto the plant is essential for cannabis growers. Given the dimensional nature of the cannabis plant, however, directing light deep within the canopy to reach the lower leaves is typically a challenge. For this reason, growers should be looking at both the light output and light distribution when selecting the best supplemental lighting for their application.
Another key criteria in the decision, is the light conversion efficiency of the fixture reflector which indicates what percentage of light emitted by the lamp is directed onto the crop.

NXT2’s superior distribution and depth penetration, means fewer fixtures are required to provide optimum light intensity to the crop.

Let Us Help You

The relationship between light conversion and the growth of the cannabis plant is critical for your success. With that in mind, urban-gro takes its guarantee of the light levels in our design plans and lighting products seriously: you can know with certainty that your plants are getting the all light they need.

Check out our wide variety of lighting products including LED solutions.

“urban-gro helps warehouse and greenhouse cultivations maximize their lighting investments.”Shelly Peterson, VP of Lighting Solutions