Under canopy lighting is beginning to change that equation. Instead of relying solely on top lighting to penetrate downward, growers are starting to distribute light throughout the plant—illuminating the canopy from both above and below.

In my conversations with commercial cannabis growers across the industry, I’ve seen interest in under canopy lighting increase quickly. One of the reasons is simple: growers talk to each other more than they used to. As more operators share their experiences, under canopy lighting has gained attention as a way to increase yield and improve the consistency of flower production.

At the end of the day, the underlying biology is straightforward. As light levels increase, yield potential increases as well. Fluence research consistently shows that relationship between additional light intensity and higher production levels within certain ranges. When growers add meaningful PPFD to their canopy—especially in environments that were previously under-lit—they can see significant gains in overall yield.

The Real Opportunity: Turning Smalls into Big Buds

One of the biggest reasons growers explore under canopy lighting is the opportunity to shift the economics of their harvest.

Most indoor flower producers are familiar with grading their crop after harvest: premium top buds, mid-grade flower and smaller buds often destined for extraction. Historically, the lower canopy has been the source of many of those smaller flowers.

Under canopy lighting changes that dynamic.

By delivering light directly to lower bud sites, growers can support flower development that would otherwise remain shaded. When deployed properly, that additional light allows the plant to develop more uniform bud structure throughout the canopy.

In practical terms, this means growers can convert material that might have been classified as “smalls” into higher-quality buds. When under canopy lighting is balanced correctly with top lighting and the overall cultivation strategy, the percentage of premium flower in the harvest can increase significantly.

For commercial operators, that shift in flower grading can have a major impact on revenue. Higher percentages of top-quality flower translate directly into higher value per harvest cycle.

Why Under Canopy Lighting Changes How You Grow

One of the first things growers discover after implementing under canopy lighting is that it often requires adjustments to their cultivation practices.

Pruning strategies are a common example. Many growers are accustomed to aggressively removing lower canopy material through lollipopping or similar techniques because those areas historically produced lower-quality flower. When under canopy lighting is introduced, some of that lower growth can become productive.

One of the misunderstandings I see is growers installing under canopy lighting but continuing to prune their plants exactly the same way they did before. In reality, leaving more lower bud sites can allow growers to take full advantage of the additional light being delivered to that part of the canopy.

Timing of the lights also matters. Some growers wait until later in the flowering cycle to activate their under canopy fixtures, but in my experience it’s often better to treat them as part of the overall lighting system from the beginning of flower. I typically recommend starting them early—at lower intensity—and gradually increasing output as the crop develops.

This approach helps support early development of lower bud sites that might otherwise remain underdeveloped.

Environmental Impacts Growers Should Expect

Adding additional light to the canopy affects more than just flower development—it also influences the overall growing environment.

As light intensity increases, the plant’s photosynthetic activity increases as well. That typically leads to higher transpiration rates, meaning plants move more water and nutrients through the system.

In practice, growers often see several environmental changes when implementing under canopy lighting:

• Increased irrigation frequency
• Greater transpiration and humidity generation
• Additional demand for dehumidification systems
• Increased airflow requirements beneath the canopy

Air movement under the canopy becomes especially important. Without proper airflow, microclimates can develop where humidity accumulates around leaves and buds. Good air circulation helps maintain consistent environmental conditions while reducing the risk of mold or moisture-related issues.

These adjustments are typically manageable, but they highlight an important reality: under canopy lighting affects the entire cultivation system, not just the lighting layout.

Installation Planning and Operational Considerations

For growers retrofitting an existing facility, installation planning is an important part of successful under canopy lighting deployment.

One of the most common challenges is electrical infrastructure. Many cultivation facilities were not originally designed with dedicated lighting circuits at the bench level. Adding under canopy fixtures may require electrical upgrades to support the additional lighting load across the room.

Bench configuration and fixture placement also influence lighting design. Depending on plant spacing and cultivation style, fixtures may be installed along the length of the bench or across it. The goal is to provide consistent light distribution to lower bud sites while maintaining accessibility for irrigation and crop management.

Dimming capability is another important feature. Young plants early in the flowering cycle typically benefit from lower light levels, while mature plants can tolerate higher intensities. Having the ability to gradually increase output allows growers to match lighting levels with crop development.

These types of design considerations are especially important when retrofitting existing facilities, where infrastructure limitations may influence how under canopy lighting is deployed.

Where Under Canopy Lighting Is Headed

Today, most growers exploring under canopy lighting are focused on indoor flower production. Indoor environments provide the level of control needed to maximize the benefits of distributing light throughout the canopy.

That said, I also see potential opportunities in greenhouse environments.

In regions with strong natural sunlight, under canopy lighting could be used to supplement light distribution within the canopy rather than relying entirely on traditional top lighting. In some greenhouse designs, growers may even consider using under canopy lighting as part of a hybrid strategy that complements sunlight and improves lower canopy productivity.

Looking ahead, I expect under canopy lighting to become less of a retrofit solution and more of a planned component of lighting system design.

Instead of adding under canopy lighting after the fact, future facilities may be designed with total canopy light distribution in mind—allocating a portion of the lighting strategy to both top and bottom illumination.

As growers continue to optimize yield, quality and production efficiency, distributing light across the entire canopy—rather than focusing only on the top of the plant—may become a more common strategy in commercial cannabis cultivation.

The post Under Canopy Lighting for Cannabis: Rethinking the Lower Canopy appeared first on Fluence.

LED vs. Fluorescent Grow Lights: Key Differences at a Glance

Spectrum Quality: Matching Light to Plant Needs Classified

Light spectrum plays a critical role in how cannabis plants grow, develop, and express their genetic potential. Fluorescent grow lights typically emit a narrow spectrum with pronounced peaks, often concentrated in the blue range, making them suitable for seedlings and vegetative growth but less effective during flowering.

Modern LED grow lights are designed with broad, application-specific spectra that support the full cannabis lifecycle. These tailored spectral profiles help drive balanced plant development, promote efficient photosynthesis, and support cannabinoid and terpene production during flowering.

Unlike fluorescent bulbs, which rely on fixed phosphor coatings, LED fixtures allow precise spectral tuning based on plant stage and cultivation goals. This flexibility enables growers to optimize light delivery without relying on multiple fixture types or supplemental lighting.

Light Intensity & PPFD: Why Fluorescent Lighting Falls Short

Light spectrum matters—but light intensity and delivery ultimately determine whether cannabis plants can reach their full potential.

Fluorescent lighting systems, including T5 and CFL fixtures, were designed for low intensity applications. While they can support early-stage growth, they struggle to deliver the photosynthetic photon flux density (PPFD) required for high-quality flowering.

Cannabis is a high-light crop. During flowering, commercial facilities target PPFD levels that fluorescent systems cannot reliably maintain across an entire canopy. To compensate, fixtures must be positioned extremely close to plants, resulting in uneven coverage, limited canopy penetration, and inconsistent development at lower bud sites.

Purpose-built LED grow lights are engineered to deliver high, uniform PPFD across larger cultivation areas. This consistency supports more even flower development, improved yield potential, and predictable results from cycle to cycle.

Thermal Management & Environmental Control

As light intensity increases, heat management becomes a defining factor in cultivation efficiency.

Fluorescent fixtures convert a significant portion of energy into heat and must be placed close to the canopy to achieve usable intensity. This introduces heat directly into the grow zone, creating hot spots and uneven temperature distribution—particularly in dense flowering canopies.

LED grow lights manage heat differently. Designed with integrated thermal management, LEDs direct heat away from the canopy, allowing growers to maintain more stable temperatures and tighter control over vapor pressure deficit (VPD). This improves plant comfort, reduces HVAC strain, and supports consistent environmental conditions across the room.

Fluorescent fixtures also introduce a physical safety risk in cultivation environments. Because fluorescent lamps are made of glass and must be positioned close to the canopy, accidental breakage during routine maintenance or plant movement can create hazards for growers. Broken glass in active grow rooms increases cleanup complexity, contamination risk, and potential injury, especially in high-density production environments.

Consistency & Scalability: Where Fluorescent Lighting Breaks Down

Consistency is one of the biggest challenges in cannabis cultivation—and one of the most important.

Fluorescent lighting systems often require workarounds such as increased fixture density, frequent bulb changes, or constant height adjustments. These variables introduce inconsistency from room to room and cycle to cycle, making it difficult to standardize results.

Fluorescent bulbs also degrade quickly, reducing light output over time and increasing maintenance demands. In scaled environments, this adds labor, downtime, and uncertainty.

LED grow lights are built for repeatability. With long operating lifespans and stable output, LEDs allow growers to standardize room designs, replicate cultivation recipes, and scale production with confidence—whether across multiple rooms or multiple facilities.

Frequently Asked Questions: LED vs. Fluorescent Grow Lights for Cannabis

Can fluorescent lights grow cannabis?

Yes, but primarily during propagation and vegetative stages. They lack the intensity and penetration required for consistent flowering and commercial yields.

Are fluorescent grow lights cheaper than LEDs?

Upfront costs may be lower, but higher energy use, shorter lifespans, and increased HVAC demand often result in a higher total cost of ownership.

Why don’t commercial cannabis growers use fluorescent lighting?

Fluorescent systems struggle to deliver the intensity, uniformity, and scalability required for consistent commercial production.

Are LED tube grow lights better than fluorescent tubes?

LED tubes can improve efficiency, but purpose-built horticultural LED fixtures deliver significantly better performance for cannabis cultivation.

What are the best grow lights for high-yield cannabis?

Commercial-grade LED grow lights designed for cannabis offer the intensity, spectrum control, and reliability needed for high yields and consistent quality.

Why LEDs Have Become the Industry Standard: How Fluence Can Help

Fluorescent grow lights played a role in early indoor cultivation, but they were never designed to meet the demands of modern cannabis production. Limitations in light intensity, canopy penetration, thermal behavior, and scalability make them increasingly impractical as growers push for higher quality and more consistent results.

LED grow lights represent a fundamental shift in how lighting supports cannabis cultivation. By delivering high, uniform PPFD with application-specific spectra and improved thermal management, LEDs enable growers to operate more efficiently while maintaining consistency from cycle to cycle.

This decision is not simply about changing fixtures—it’s about selecting lighting systems that align with plant goals, facility constraints, and long-term operational strategy. Fluence works with growers to evaluate these variables, helping them select LED solutions backed by research, validated in commercial environments, and designed to deliver consistent performance as operations scale.

For growers assessing lighting decisions today, the right approach, and the right partner, can help reduce risk, improve consistency, and support cultivation outcomes as production demands continue to evolve.

The post LED vs. Fluorescent Lights for Cannabis: Which Lights are Better appeared first on Fluence.

I spend much of my time working at the intersection of lighting systems, electrical infrastructure, and real-world cultivation environments. What I’ve seen repeatedly is that many growers run into GFCI-related issues not because they ignore safety or best practices, but because electrical codes have evolved faster than awareness across the industry.

Today, understanding how and why ground-fault protection applies to horticulture environments is essential for anyone designing, expanding, or retrofitting a cannabis facility.

What GFCI Really Means—and Why It Matters in Cultivation

Most people associate GFCI (Ground-Fault Circuit Interrupter) protection with kitchens, bathrooms, or outdoor outlets. Fundamentally, GFCI technology is designed to detect abnormal current paths—often caused by moisture or unintended contact—and quickly shut off power to protect people, property, and to reduce fire risk. However, these conditions are all quite common in cultivation as well.

Grow rooms are inherently damp environments. Irrigation, misting, washdowns, and elevated humidity often place electrical equipment in close proximity to moisture. At the same time, cultivation staff regularly work around lighting systems, particularly in multi-tier environments where luminaires are within reach. Together, these factors create a risk profile that looks very different from typical commercial or industrial spaces.

This reality is what prompted updates to the electrical code affecting horticulture lighting.

The NEC Change That Caught the Industry Off Guard

In 2020, the National Electrical Code (NEC) introduced Section 410.184, which requires horticultural luminaires to be connected to GFCI-protected circuits. The intent was clear: improve personnel safety and reduce fire risk in wet environments.

Where things became complicated for growers was how these changes were rolled out and adopted.

Electrical code updates are implemented state by state—and in some cases, county by county. Some jurisdictions adopted the 2020 NEC quickly, while others lagged by several years. As a result, growers operating in multiple locations or expanding existing facilities often encountered new requirements mid-project.

Once a permit is pulled, inspections are typically conducted against the code version adopted at that time—not necessarily the one in effect when a facility was originally designed. That disconnect has led to failed inspections, redesigns, and costly project delays across the industry.

Where Lighting and GFCI Interact in Unexpected Ways

One of the most common challenges growers encounter isn’t a disagreement with the need for protection—it’s unexpected circuit tripping.

GFCI devices are intentionally sensitive. They are designed to respond quickly to very small imbalances in current. Modern cultivation facilities, however, often use many luminaires on a single circuit—particularly in vegetative rooms, propagation areas, and under-canopy installations where individual luminaires draw relatively low power.

When many devices share a circuit, electrical behavior that is normal at the individual luminaire level can become cumulative. From the grower’s perspective, this may look like a lighting reliability issue. From the electrical system’s perspective, it’s a protective response working as intended.

The challenge is that once a facility is built, correcting these issues can be disruptive and expensive. In many cases, circuits must be split or reworked after the fact—an outcome no operator wants to face after installation.

Why Early Electrical Coordination Is Critical

Nearly every significant GFCI-related issue I’ve encountered could have been mitigated earlier in the design process.

That starts with coordination between growers, electrical designers, installing electricians, and lighting partners before construction begins. It becomes even more important when standardized facility designs or out-of-state engineering teams are involved, where local code adoption and enforcement may differ from project to project.

Authorities Having Jurisdiction (AHJs) are inspectors, not consultants. Their role is to enforce code compliance, not to guide design decisions. Waiting until inspection to address GFCI requirements often means reacting under pressure—sometimes with limited options.

The most successful projects treat electrical compliance as a foundational design input, not a final hurdle.

How Fluence Supports Growers Navigating GFCI Requirements

At Fluence, our involvement often begins well before lights are installed. GFCI requirements sit at the intersection of electrical code, facility design, and cultivation practices—and those conversations are most effective when they happen early.

Our application engineering team regularly engages with growers, electrical designers, and installing electricians during the planning and pre-wire phases of a project. This early collaboration helps identify applicable code requirements, clarify how local adoption of NEC standards may impact a specific facility, and surface potential challenges before they become costly change orders or inspection delays.

Because code interpretation and enforcement can vary by jurisdiction, Fluence also helps growers frame the right questions for their design teams and local authorities. Whether a project involves a new build, an expansion, or a retrofit, aligning on expectations upfront reduces uncertainty and helps avoid surprises later in the process.

In practice, this approach allows lighting systems, electrical infrastructure, and compliance requirements to move forward together—supporting smoother project execution and helping facilities stay focused on cultivation rather than troubleshooting.

What Growers Should Be Thinking About Now

GFCI requirements are not unique to cannabis, and they are likely to become more relevant over time. They reflect a broader emphasis on safety in environments where water, electricity, and personnel routinely intersect.

For growers planning new facilities or expansions, a few early questions can make a meaningful difference:

• Which NEC version is currently adopted locally?
• How are GFCI requirements interpreted by inspectors in this jurisdiction?
• How many luminaires will be placed on each circuit?
• When should electrical designers, installers, and lighting experts be aligned?

Addressing these questions early helps reduce risk, protect project timelines, and create a clearer path from design through inspection.

The post Why GFCI Requirements Are Reshaping Electrical Design in Cannabis Cultivation appeared first on Fluence.

Across markets, I keep seeing one common theme: successful growers are reassessing the systems they already have and asking better questions about how those systems work together. Lighting, environmental control, data, and operational strategy are no longer siloed decisions. They’re interconnected—and when one is misaligned, performance suffers.

During my work this past year, I have identified the 10 things smart cannabis growers are re-evaluating for 2026—and why each one matters more now than ever.

1. Actual Light Output—Not Fixture Age or Spec Sheets

Many growers are still running LEDs that are seven years and older. While LEDs last longer than HPS, all lighting sources will see some degradation in intensity over time. That loss often goes unnoticed until yields or consistency start slipping.

Savvy growers are re-measuring PPFD across their rooms to understand what their plants are receiving today, not what the fixture delivered when it was new. This data-driven approach allows operators to identify underperforming zones, make targeted upgrades, and avoid unnecessary full-room replacements.

2. Light Uniformity as a Yield Multiplier

Average PPFD numbers across the canopy or from a single point only tell part of the story. Uniformity across the canopy is even more critical—and sadly more often overlooked.

Poor uniformity leads to uneven plant development, inconsistent flowering, and variability in quality and yield across a room. In contrast, consistent uniformity supports synchronized growth, predictable harvests, and more consistent finished product.

In 2026, uniformity is becoming a competitive differentiator—not just a technical metric.

3. Using Spectrum as a Strategy, Not a Gimmick

Tunable lighting is becoming more commonplace, but it’s not always more effective. Too often, spectrum adjustments are treated as experimental tweaks rather than part of a broader cultivation strategy.

Smart growers are stepping back and asking a more important question: What exactly is the purpose of this spectrum choice? Are the claims valid and do they align with my goals? Whether the goal is morphology control, flowering behavior, consistency across cultivars, or OpEx savings, the spectrum growers use needs to be applied intentionally—grounded in research, not novelty.

The outcome should lead to fewer knobs being turned resulting in more repeatable outcomes.

4. Re-Evaluating Under-Canopy Lighting

As pressure increases to improve yield without expanding your footprint, under-canopy lighting is on the evaluation list.

When applied correctly, under-canopy lighting can improve lower-canopy productivity and overall plant efficiency. But it’s not a universal solution. Smart growers are reassessing when, where, and how under-canopy lighting makes sense within their specific genetics, spacing, and airflow strategies.

The key isn’t adoption—it’s proper integration.

5. Treating Lighting, HVAC, and Airflow as One System

Lighting decisions don’t stop at photons. They affect heat load, transpiration, airflow patterns, and HVAC demand.

Growers who evaluate lighting in isolation often create downstream issues—hot spots, humidity imbalances, or airflow inefficiencies. The most successful facilities in 2026 are taking a system-level view, aligning lighting layout, airflow design, and environmental control to work together rather than compete.

This alignment leads to more stable environments and fewer surprises mid-cycle.

6. Retrofitting Existing Facilities Before Building New Ones

With capital constraints still shaping the industry, many operators are choosing to upgrade what they already have instead of starting from scratch.

Strategic retrofits—especially lighting upgrades—can dramatically improve performance without the risk, cost, and timeline of new construction. Smart growers are prioritizing changes that deliver measurable ROI: improved uniformity, better efficiency, and tighter environmental control.

In many cases, the most productive facility isn’t the newest—it’s the best optimized. That principle sits at the core of effective cannabis facility optimization.

7. Automating for Consistency, Not Labor Reduction

Automation is often framed as a way to reduce labor costs. But forward-thinking growers see its real value elsewhere: consistency.

By automating lighting schedules, environmental setpoints, and system responses, growers reduce human error and improve repeatability from run to run. This doesn’t replace grower expertise—it supports it, freeing teams to focus on observation, decision-making, and plant health rather than constant manual adjustments.

8. Using AI to Interpret Data—Not Replace Grower Expertise

AI is already present in cultivation, whether growers realize it or not. From trend analysis to predictive alerts, AI-driven tools are helping operators make sense of increasingly complex datasets.

The smartest growers are using AI as an interpreter, not an authority. AI helps surface patterns, flag anomalies, and support decision-making—but final calls remain grounded in human experience and cultivation knowledge.

In 2026, AI is less about automation and more about insight.

9. Designing Facilities for Regulatory and Market Flexibility

Regulatory landscapes continue to evolve, including the recent reclassification of cannabis from Schedule I to Schedule III. At the same time, consumer expectations around quality, consistency, and transparency are rising.

Growers are re-evaluating whether their facilities are flexible enough to adapt. Modular lighting layouts, scalable controls, and robust data capture make it easier to adjust production strategies without major overhauls.

Future-ready facilities aren’t built for one scenario—they’re built to adapt.

10. Treating Lighting as a Competitive Weapon, Not a Commodity

Perhaps the biggest shift we’re seeing is one that’s philosophical.

Lighting is no longer viewed as just another line item. Smart growers are increasingly recognizing it as one of the most powerful—and underleveraged—tools in cultivation. When lighting decisions are aligned with business goals such as yield, quality, and consistency, the impact extends far beyond the grow room.

In 2026, the growers who outperform won’t be the ones chasing the cheapest fixture. They’ll be the ones using lighting strategically that supports their long-term success.

Looking Ahead

The next phase of cannabis cultivation won’t be defined by flashy technology or bold claims. It will be shaped by growers who ask better questions, measure what matters, and optimize the systems they already rely on every day.

Re-evaluating these ten areas isn’t about doing more—it’s about doing things smarter. And for growers committed to a stronger cannabis cultivation strategy, that mindset will matter more than ever in 2026.

The post 10 Things Successful Cannabis Growers Are Re-Evaluating for 2026 appeared first on Fluence.

How to Use This Guide

This guide is designed for growers operating aging LED lighting systems. Its purpose is to help identify when an existing lighting system may no longer align with current production goals, energy efficiency targets, or available incentive opportunities. Not every facility needs an upgrade, but every facility benefits from an objective evaluation.

Why Older LED Systems Deserve a Second Look

Many cannabis facilities installed LED lighting five or more years ago, at a time when cultivation targets, energy economics, and lighting technology looked very different than they do today. Those systems may still be operating, but that does not mean they are still performing at the level that modern cultivation demands. In today’s competitive landscape, it’s more crucial than ever to be able to maximize yields, create quality differentiation with consistency, and simultaneously create and maintain operational efficiencies. And while that sounds like a tall order, the ability to do so is often the difference between success and failure.

Early-generation LED systems were typically designed around lower target PPFD, less dense canopies, and fewer available lighting strategies. Since then, growers have pushed for higher productivity, tighter quality standards, and improved energy efficiency. As these goals have evolved, the gap between what older LED systems were designed to deliver and what current operations require has widened.

LEDs are often viewed as long-term, maintenance-free assets. While they are durable, they are not immune to aging. Over time, output can decline, uniformity can suffer, and efficiency can erode—often without obvious visual cues. This guide is intended to help growers objectively evaluate whether an older LED system is still aligned with today’s operational realities.

What Typically Triggers an LED Re-Evaluation

Most LED-to-LED replacements do not begin with rebates or excess capital. They begin when growers notice signals that their lighting system may no longer be keeping pace with the operation.

Common triggers include increasing fixture failures or maintenance issues, declining or inconsistent yields that cannot be explained by genetics or environment alone, uneven canopy development, facility upgrades or room redesigns that push lighting beyond its original design intent, and the desire to operate at higher PPFD or improve crop quality without proportionally increasing energy costs.

While rebate and incentive programs can play an important role in improving project economics, they are typically evaluated after a technical or operational need is identified. The strongest LED-to-LED projects start with performance questions, not financial assumptions.

Five Signs Your Current LEDs May Be Limiting Performance

1. Energy costs are rising without yield improvement

If electrical consumption remains steady or increases while yields plateau, usable light output may no longer match energy input. Aging fixtures can quietly reduce return on energy spend even when power draw appears unchanged.

2. You cannot efficiently reach today’s target PPFD

Modern cultivation frequently targets higher PPFD than older LED systems were designed to deliver. Pushing legacy fixtures harder can increase heat, stress components, and accelerate degradation, making higher light levels inefficient or unsustainable.

3. Light distribution is uneven across the canopy

Uniformity losses are common in aging systems and difficult to detect visually. Poor distribution can limit mid- and lower-canopy development, reducing total yield even when average PPFD appears acceptable.

4. Crop quality has plateaued or become inconsistent

As markets mature, consistency in flower structure, cannabinoid expression, and terpene profiles becomes increasingly important. Older spectral designs may not support today’s quality expectations as effectively as newer platforms.

5. Your lighting system limits new growing strategies

Many advanced cultivation approaches—such as under-canopy or inter-canopy lighting, higher-intensity top lighting, or advanced spectral strategies—were not feasible when earlier LED systems were installed. In some cases, fixture design limits what strategies can be deployed.

Why “The Lights Still Work” Isn’t a Performance Metric

A common assumption with LED systems is that if fixtures are turning on and plants look healthy, lighting performance must still be acceptable. In reality, functional lighting and effective lighting are not the same.

Visual inspection provides very little insight into how much usable light is reaching the canopy. Brightness, color, and apparent plant vigor can mask meaningful losses in PPFD and uniformity. In many cases, the first noticeable symptom of declining lighting performance is reduced yield rather than visible fixture failure.

Older LED systems can continue operating while delivering lower average PPFD than originally designed, reduced uniformity across the canopy, and inconsistent fixture-to-fixture output. Because these changes occur gradually, they often go unnoticed until production metrics begin to slip.

Objective measurement—such as canopy-level PPFD mapping and uniformity analysis—is a critical step in evaluating whether an existing LED system is still meeting operational goals.

Understanding LED Degradation and Why It Matters

All LED systems experience degradation over time. Unlike HPS lighting, where degradation is expected and widely understood, LED degradation is often misunderstood or overlooked.

LED output loss is influenced by diode quality and quantity, driver design and operating current, thermal management, and operating environment. Fixtures that rely on fewer diodes driven at higher currents tend to experience faster degradation and higher long-term risk. Systems pushed beyond their original design parameters may also see accelerated performance loss.

Degradation rarely presents as sudden failure. Instead, it appears as gradual reductions in delivered PPFD, increasing variability between fixtures, and declining efficiency at the canopy. From an operational standpoint, degradation directly affects yield potential and cost per gram.

From an incentive standpoint, degradation matters because most rebate and incentive programs focus on documented performance improvement rather than fixture age. Establishing a measured baseline helps clarify both performance gaps and potential eligibility.

Why Like-for-Like LED Swaps Often Fall Short

When replacing aging LED fixtures, it can be tempting to pursue a one-for-one swap. While this may address reliability issues, it often misses the broader opportunity and, in some cases, creates new challenges.

Lighting changes influence transpiration, heat load, irrigation demand, and canopy management. Even LED-to-LED upgrades can alter plant response if light levels increase, uniformity improves, or spectra change. Without accounting for these factors, growers may fail to realize the full benefit of newer technology.

From an incentive perspective, like-for-like replacements are often less compelling. Most rebate programs are designed to reward measurable improvement rather than simple replacement. Successful upgrades treat lighting as part of a system rather than an isolated component.

Where LED-to-LED Rebate Opportunities Typically Exist

While LED-to-LED incentives are generally smaller than HPS-to-LED programs, meaningful opportunities still exist. Utilities typically evaluate eligibility based on measurable change.

Projects are most likely to qualify when they demonstrate increased delivered PPFD at equal or lower energy use, improved fixture efficacy, enhanced control capabilities such as dimming or advanced scheduling, adoption of new lighting strategies, or documented performance improvements that support custom incentive applications.

Incentive values vary widely by region and utility. Pre-approval, documentation, and performance measurement are often required. When evaluated early and aligned with project goals, incentives can improve payback timelines without driving poor design decisions.

The Economics That Matter Most

When evaluating an LED-to-LED upgrade, fixture cost alone rarely reflects the true impact. A more complete economic assessment considers cost per gram, yield per square foot, energy efficiency at operating PPFD, maintenance and downtime risk, and the opportunity cost of operating under degraded light.

Rebates and incentives should support a sound technical decision rather than justify a poor one. When aligned with performance improvements, they can meaningfully enhance return on investment.

A Simple Framework to Evaluate Your Current Lighting System

Begin by measuring current PPFD and uniformity at the canopy. Identify degradation, distribution issues, or failure trends. Define clear production goals, including yield, quality, and efficiency targets. Assess environmental readiness, including HVAC, irrigation, and canopy management. Evaluate lighting design options alongside potential incentive pathways.

This structured approach ensures decisions are grounded in data rather than assumptions.

Final Takeaway

Modern cannabis cultivation demands adaptability. Older LED systems may still function, but they may no longer support current performance expectations or strategic goals. LED-to-LED upgrades are not about replacing working equipment; they are about ensuring lighting continues to serve the operation as it evolves.

A measured, performance-first evaluation provides the clearest path forward.

The post A Practical Guide to Evaluating Older LED Lighting Systems appeared first on Fluence.

Why Efficacy Matters More Than Ever

Energy costs are rising around the world. Between increased grid demand from electric vehicles, data centers, AI infrastructure, and general electrification, growers will continue to feel the pressure of higher electricity bills. Lighting and HVAC together make up the lion’s share of a cultivation facility’s operating expenses. That’s why every photon counts.

From Efficiency Gains to Smarter System Design

A decade ago, the industry made the leap from high-pressure sodium (HPS) fixtures to LEDs—and for good reason. LEDs offered major efficiency gains, reduced heat output, and improved environmental control. Growers could channel more power into productive light instead of waste heat, while easing the burden on HVAC systems.

Over time, those early transitions delivered big savings—but the low-hanging fruit has already been picked. The diode technology inside LEDs has become incredibly refined, and the annual efficiency gains we once saw—2–3 percent year over year—have slowed to about 1 percent or less. The industry has reached a plateau in raw diode efficacy.

That shift has changed the conversation. It’s no longer just about how efficient a single diode can be, but how intelligently the entire system—spectrum, controls, and deployment strategy—is designed to get the most out of every watt. The next leap forward in efficacy won’t come from the component level. It will come from how we apply light.

The Relationship Between Spectrum and Efficacy

Spectrum plays a major role in determining fixture efficacy. Red LEDs are inherently more efficient than white ones because they emit light directly, while white LEDs rely on phosphor coatings that absorb energy in the conversion process. A fixture with high red content might achieve 3.5 µmol/J or more, while a broad-white fixture could sit around 2.7 µmol/J.

That said, a high-red environment isn’t always the best choice. Excessive red light can make it harder for staff to work in the room, and more importantly, it increases the risk of photobleaching—those “white-tipped” buds that reduce overall flower quality and market value. Photobleaching can be strain-dependent and influenced by other environmental factors. The goal is balance: maximizing efficacy without compromising product quality.

Balancing Efficiency and Capital Constraints

Cannabis remains a capital-constrained market. Because federal legalization still hasn’t happened in the U.S., growers don’t have access to the same low-cost financing that traditional agriculture enjoys. That makes every dollar of CapEx and OpEx count.

A more efficient fixture often carries a higher purchase price, so the right decision depends on your financial position, local energy rates, and available rebate programs. Some utilities directly tie incentive eligibility or payout value to fixture efficacy—meaning higher-efficiency luminaires can offset much of their initial cost. In some cases, rebates can reach $1,000 or more per fixture, turning high-performance lighting into a near break-even investment.

Ultimately, there’s no one-size-fits-all answer. Growers need to weigh upfront cost against long-term energy savings and potential incentive benefits. The right lighting partner should help you do that math honestly.

Where the Next Gains Will Come From

Since diode efficiency is plateauing, lighting manufacturers are innovating elsewhere—how we deliver the light, where we deliver it, and when. At Fluence, our research program has focused on optimizing spectrum, intensity, and light placement to reduce energy use while enhancing yield and quality.

Dynamic, tunable lighting is one of the most promising tools. By adjusting spectral composition over the plant’s growth cycle, growers can use more red when it’s safe and pull back when the crop becomes sensitive to photobleaching. Our new RAPTR 2 top light embodies that flexibility. Its tunable T48 spectrum lets growers vary red content from 40 to 80 percent, achieving up to 3.5 µmol/J efficiency while maintaining precise environmental control.

We pair this technology with horticultural support—our science team works directly with growers to design lighting schedules that deliver maximum energy savings and plant health.

Beyond the Canopy: A “Red Sandwich” Strategy

Another frontier of efficacy lies beneath the canopy. Our research has shown that under-canopy lighting allows for much higher red content without the same risk of photobleaching seen from top-down light. By distributing photons both above and below the canopy—what we call our Red Sandwich Lighting Strategy—we can increase yield, uniformity, and quality while further improving energy efficiency. It’s an elegant example of how plant science and engineering converge to push the limits of performance.

Making the Right Decision for Your Grow

If you’re evaluating new LEDs, take a holistic approach:

• Partner wisely. Work with a lighting company that understands your specific crop, facility design, and financial constraints.
• Investigate incentives. Rebates can dramatically change the economics of your investment.
• Test before you commit. Run side-by-side trials. Validate the results yourself.
• Think long-term. Today’s lighting investment will shape your operation for the next 5–10 years.

At Fluence, we view every customer partnership as collaborative. Your success is our success. That means helping you choose the right balance of efficacy, spectrum, and cost to meet your production goals—not just selling a light. Because at the end of the day, efficacy isn’t just about micromoles per joule. It’s about maximizing every photon, every watt, and every harvest.

The post How Growers Can Maximize LED Efficacy and Energy Efficiency in Cannabis Cultivation appeared first on Fluence.

When I first started working with growers, “controls” usually meant a wall timer and maybe an on/off switch. Today, controls mean so much more. I think about how we can ramp intensity day by day as plants move from veg to flower, or how we can run spectrum recipes that shift red, blue, and green depending on what the crop needs. I’ve seen control systems step lighting levels smoothly over two or three weeks, keep irrigation in sync with PPFD, and make sure HVAC holds the right environment as light levels rise. That’s a far cry from just flipping a switch.

Why does that matter? Because today’s growers push plants harder than ever. At high light intensities, consistency makes the difference between “good” and “great.” Controls give growers the ability to maintain consistency while also freeing up time. Instead of manually adjusting dimmers or checking meters, we can let the system handle repetitive actions so the cultivation team can focus on bigger decisions. And yes, it even helps keep operating costs in check by cutting down on labor and letting us manage settings remotely when we’re not in the facility.

Craft growers tend to dial everything by hand, which works when you’re running smaller canopies and boutique cultivars. Larger operators lean on automation more heavily so they can hit volume and consistency goals. But in the end, we’re all pulling on the same levers—light, irrigation, and climate—just at different scales.

Integration Over Isolation: One Pane of Glass

One of the most inefficient activities I see is when growers run each system in isolation. Lighting dashboards here, irrigation controllers over there, HVAC on its own. I’ve been in rooms where the grower must click through four different systems just to figure out why conditions are drifting. Those actions waste time and invite mistakes.

The better way is integration—something industry has affectionately named “—”a single pane of glass”. It refers to having one centralized dashboard or interface where all critical systems and data streams can be viewed, monitored, and managed.” (said differently – one computer screen). With one system in charge, lighting predictively knows when DLI targets will be hit in the greenhouse and can automatically dial back. Irrigation and climate setpoints can respond as lighting ramps up instead of fighting against them. Machines can make micro-adjustments faster than I can, and they never forget to do it consistently.

Wireless You Can Trust

I’ll be honest—ten years ago I was skeptical of wireless lighting control. Back then, reliability just wasn’t there. But today, I’ve seen how robust these systems have become. They’re used in demanding environments like commercial interiors, theaters, and even street lighting—places where failure isn’t an option. Lighting control is mission-critical. The same reliability is now showing up in horticulture. Modern wireless protocols are secure, robust, and proven. When I send a command, every luminaire responds. That’s the confidence I need when crop health and profitability are on the line.

Wireless matters for me because it makes life simpler. I don’t have to run a new cable every time I want to change zoning. When labor is tight, the ability to manage rooms quickly without rewiring is a real advantage. The trick is choosing platforms with proven track records—this isn’t an area to gamble on “good enough.”

The Next Leap: Predictive Controls and AI

Looking ahead, I don’t think the future is just “more automation.” It’s smarter automation. With better sensors and machine learning, control systems are starting to predict what will happen before I even make a change. If I bump temperature by half a degree, how will that impact yield? If irrigation timing slips due to valve failure, what disease pressures might I face? Some systems can already forecast scenarios like HVAC failure and suggest recovery steps, so I don’t lose a whole cycle. That’s powerful.

I’ve seen firsthand how growers still need to steer the ship—AI won’t replace our judgment. But if I can lean on predictive models for consistency and use them to test “what if” scenarios, that’s a huge edge. This approach to scenario analysis is commonly known in the industry as a “digital twin”. The pace of innovation is only speeding up. We moved from inter-canopy lighting to under-canopy almost overnight, and now spectrum tuning is the new frontier.

Controls need to be nimble enough to keep pace.

On the financial side, I’ve learned to set realistic expectations. Gone are the days when ROI hits in eight months. Most growers I know are satisfied with two-year ROI on advanced controls or spectrum-tunable systems, and even two-and-a-half years is still workable. In other parts of horticulture, three-year ROIs are common. The point is: controls and dynamic lighting are worth it, even if the payback takes a little longer.

Bringing It All Together

Here’s how I think about it when planning upgrades:

• Start with outcomes, not gadgets. Define whether the priority is yield, quality, or energy savings, those goals should drive which control capabilities matter most.
• Push for integration. A single pane of glass eliminates silos and ensures lighting, irrigation, and HVAC all work together instead of at odds.
• Choose wireless with a proven track record. Reliability and security must be guaranteed when the crop’s value is on the line.
• Invest in commissioning and training. A strong engineering partner ensures the system is set up correctly from day one and that teams can use it with confidence.
• Prepare for predictive models. Clean data collection now will pay dividends later as AI-driven insights become standard in cultivation.

At the end of the day, controls are how a grower turns a cultivation strategy into reality. They let the grower synchronize light, climate, and irrigation, tune spectrum to the crop’s needs, and reduce variability cycle after cycle. They don’t replace growers—they make them even more effective. And as automation and AI keep evolving, I’m convinced controls will be the backbone of the next big leap in cannabis cultivation.

The post The Future of Cannabis Grow Controls: AI, Automation, and Dynamic Lighting appeared first on Fluence.

As artificial intelligence (AI) continues to show up in cannabis conversations, I’ve been watching closely. The potential is real—but so are the limitations. Especially when it comes to lighting. AI is good at patterns. But cannabis isn’t a standard crop. And lighting isn’t a one-size-fits-all input.

Here are five things AI consistently gets wrong about cannabis lighting and growing—based on what we’ve learned from real-world growers and our team’s work at Fluence.

1. Oversimplifying Light Requirements

What AI gets wrong:

“Run 18/6 for veg. Flip to 12/12 for flower. Use any full-spectrum light.”

What growers know:

Light schedules are only part of the equation. What matters just as much—if not more—is intensity, spectrum strategy, distribution, and uniformity across the canopy.

AI tends to treat cannabis like it treats most plants: follow the schedule, check the box. But growers know light drives plant architecture, yield, and quality. Spectrum choices impact everything from internodal spacing to chemovar expression. Intensity and uniformity shape how consistent those results are. And how you steer with light across different stages of the crop cycle? That’s where the real performance gains come from.

2. Misunderstanding Nutrient Needs and Feeding Schedules

What AI gets wrong:

“Use high nitrogen in veg, high phosphorus in flower.”

What growers know:

Feeding programs aren’t templates—they’re tailored. AI often recommends nutrient strategies that sound plausible on paper but ignore critical variables: cultivar behavior, growing media, water chemistry, and system type (like drain-to-waste vs. recirculating).
A well-designed feed chart works for your genetics, your environment, and your goals. It responds to the plant in real time. Generic recommendations can’t account for subtle shifts in EC or how one cultivar might demand extra calcium while another burns at the same dose. Experienced growers spot those differences before AI would even flag a change.

3. Confusing Indoor and Greenhouse Environments

What AI gets wrong:

“Maintain optimal VPD and CO₂ levels. Use supplemental lighting if needed.”

What growers know:

Indoor and greenhouse environments aren’t interchangeable—they’re fundamentally different operating models.

Indoors, growers can control every aspect of the environment. In greenhouses, you’re adapting to the natural rhythm of the sun. That means fluctuating DLI, daily cloud cover, seasonal shifts in photoperiod—all of which influence how and when you supplement with artificial light.

AI often lumps the two environments together when giving advice. But optimizing light in a sealed room vs. a light-assisted greenhouse requires completely different thinking, tools, and strategies.

4. Ignoring Cultivar Differences

What AI gets wrong:

“All cannabis strains flower in 8–9 weeks. Train early. Flip at 18 inches.”

What growers know:

Every cultivar is different. Some stretch dramatically under flower lighting. Others stay compact. Some finish in under 8 weeks, while others push 12. The way a cultivar responds to spectrum, intensity, and training methods isn’t predictable unless you’ve grown it—or worked with someone who has.

Lighting needs to be tailored to the crop’s genetic behavior. Applying a standard approach to light strategies across all genetics limits your results. Great growers don’t treat every plant the same, and lighting recommendations shouldn’t either.

5. Overhyping Automation & AI Tools

What AI gets wrong:

“Let AI manage your grow. It can predict yield, detect pests, and optimize performance automatically.”

What growers know:

Automation can absolutely help—but it’s not a replacement for real experience. Some AI tools claim to replace human oversight with predictive analytics or image recognition. But seasoned growers know how quickly an environment can shift, how subtle early signs of stress can be, and how important it is to read your crop in real time.

Lighting, in particular, requires ongoing attention. You don’t just “set and forget” your PPFD levels or spectrum mix. You monitor, adjust, and adapt—based on the plant’s response, facility data, and production targets. AI can support that process, but it can’t lead it.

Conclusion

AI is evolving fast, and it will continue to be a part of the cannabis industry. But right now, it’s not a shortcut to better yields or better plants. It’s a tool—one that works best when paired with real-world expertise, crop-specific insights, and a lighting strategy grounded in plant science.

At Fluence, we believe in equipping growers with technology that supports decision-making, not oversimplifies it. Because in this industry, nuance matters. And growers who understand their plants will always outperform software that doesn’t.

Author: Matt Urbancic, Marketing

The post What AI Gets Wrong About Cannabis Lighting (and Growing) appeared first on Fluence.

Both methods have their unique advantages and challenges, and making the right choice really boils down to understanding your goals, your resources, your ability, and your environment. I will share some insights from what I’ve seen firsthand.

The Core Cost Differences: Setup and Operation

When planning a cultivation facility, cost is always a primary consideration. There are a lot of similarities in what you’ll need to pay for, but the cost structure for indoor versus greenhouse can be vastly different.

Indoor facilities generally come with a higher upfront and typically ongoing cost. Why? Because you’re building a fully sealed, fully controlled environment from the ground up. This means you should be prepared to make heavy investments in things like lighting, HVAC, electrical infrastructure, and increasingly, automation. We’re talking about structures that are usually framed steel buildings with opaque, heavily insulated walls – often in retrofitted warehouses or purpose-built facilities.

Greenhouses on the other hand, are typically going to have a lower construction cost per square foot. The main reason is that greenhouses get to leverage more natural elements, especially sunlight and fresh air, which significantly helps to reduce energy bills and ongoing operational expenses. However, they still require different levels of environmental control, largely dependent on your location. But generally, if they’re optimized and the climate permits, greenhouses are more cost-efficient in the long term.

Building Design and Environmental Control: My Approach

The design really dictates your control.

With indoor facilities, there’s no natural light. This means we’re creating 100% of the light the plant needs. We also typically divide indoor spaces into smaller rooms, allowing for slightly more control over individual, smaller batches. More rooms do mean more equipment, which adds to the expense, but you gain increased granular control. Things like vapor barriers, moisture control, and pest prevention are managed differently in this sealed environment. We also must account for noise and smell reduction, which is a bit easier to contain in a fully enclosed building.

Greenhouses are designed to maximize natural light. Their structures are typically made of glass or polycarbonate with aluminum or steel framing. The focus is on optimizing solar gain based on geographical alignment. The biggest challenge here is climate exposure. You must design everything from below-freezing temperatures and snow load to 120-degree heat, dry conditions, and high light levels which can more rapidly degrade materials. Zoning and site considerations also come into play; sometimes agricultural zoning offers different incentives for greenhouses than they do for indoor facilities. And sometimes, you might even opt for a natural foundation instead of concrete.

The crucial difference for me is this: in an indoor facility, we are manufacturing the environment. In a greenhouse, we are controlling what the natural environment is doing and changing throughout the year. This means greenhouses absolutely require things like blackout systems and shade curtains to manipulate the plant’s photoperiod.

Quality and Consistency: Where Each Shines

This is a big one for growers, especially for those aiming for premium products.

Generally, I’d say indoor grows, on average, offer a slightly more consistent product and higher quality results. This is almost entirely due to the sheer level of control and consistency you can create. Especially in the premium flower category, where buyers are looking for very specific attributes, the ability to control every aspect—lighting intensity, spectrum, humidity, temperature, pests, pathogens, pruning, and upkeep—leads to more reliable outputs. You have to achieve a minimum standard for temperature and humidity in an indoor room, or “all hell breaks loose,” as I like to say.

Greenhouses can absolutely produce top-shelf cannabis with unique attributes. However, achieving that often requires a higher level of sophistication and equipment to provide environmental stability. You’re constantly relying on your equipment to react quickly to natural fluctuations in light and temperature. When you have a lot more plants in a space, like in a greenhouse, it can also become harder to identify problems early. That said, some of the most highly sophisticated greenhouses can certainly compete with the highest level of indoor quality.

Lighting Strategies: Manufacturing vs. Complementing

Plants use light the same way, regardless of where they’re grown. How that light is delivered, however, is very different.

Indoors, we have the highest level of control. We dictate exactly how much light, what intensity, and what spectrum the plants receive, for how long. The Daily Light Integral (DLI) is more of a retrospective calculation here; what really matters is the consistent PPFD (Photosynthetic Photon Flux Density) over the photoperiod. More light generally equals more production, in a roughly one-to-one ratio up to a certain point.

In a greenhouse setting, our goal is to complement the natural light pattern. We supplement the light to ensure the plants receive their total required amount, adapting throughout the year based on natural conditions. This requires sensors feeding into control systems that tell us when there’s a light deficit and to increase light intensity. While sunlight has a magical, deeply penetrative quality that artificial lights don’t quite replicate, we can use supplemental lighting to average out DLI inconsistencies throughout the day.

Spectrum gets trickier in a greenhouse. We know that too much absolute red light can lead to adverse results like photobleaching on flowers. The sun has a certain percentage of red; if we’re adding to that, we need to be careful not to exceed the plant’s natural tolerance to red light. An 80% red spectrum fixture (R8) might be highly efficacious, meaning it uses less wattage, but it also puts you in a “danger zone” for having too much red. If you’re not careful with supplemental levels of red light combined with the sun you could be setting yourself up for adverse reactions. Indoors, we have complete control over the spectrum we deliver.

Pest and Diseases: Common Battles, Different Fronts

Regardless of location, technically, you’re always fighting the same battles because we’re working with the same plant, same pests, same diseases. However, the exposure that growers are managing differs.

Greenhouses are more exposed to outside air and elements due to a less secured perimeter. Many rely on active and passive cooling systems that bring in outdoor air, which can introduce other issues relating to the atmosphere. So, greenhouses generally have slightly higher potential for pests and pathogens.

That being said, a massive factor for both indoor and greenhouse is human interaction. We are the biggest mode of transportation for pests and pathogens. My advice is always to have the most stringent of protocols: high levels of PPE, separate inside/outside clothes, changing rooms, foot washing stations, and not sharing equipment between different areas. While a greenhouse might have air intake that needs scrubbing, the overall responsibility for pest management and prevention is similar for both. The challenge in large greenhouses, however, is that it can be harder to spot problems early across hundreds or thousands of plants compared to smaller, more compartmentalized, indoor rooms.

Regulatory and Compliance: Location is Everything

This is where your specific location becomes paramount. There are many differences, depending on the state, county, city, and even local zoning ordinances.

First, you need to find out where you can even build. Some places simply make it impossible to build a greenhouse or an indoor facility. Then there are more specific rules or regulations:

• Odor Mitigation: Indoor facilities, being tighter and more controlled, generally find it easier to achieve required odor mitigation levels. Greenhouses, relying on outdoor air, might need more robust systems.
• Security: Indoor facilities, often in steel or brick buildings, are usually easier to secure with barbed wire, cameras, and security teams. Greenhouses are more exposed, relying on sturdy fences and perimeter cameras across open spaces.
• Agricultural Regulations: Especially in greenhouses, you’ll face agricultural regulations concerning runoff, discharge, VOCs, cleaning chemicals, and even your SOPs for pesticides and pathogen responses.

It’s not just about getting an electrical permit or a cultivation license; there are many layers of regulatory hurdles people should be prepared for.

Yields: It’s About the Photons

If you can control a greenhouse to deliver a consistent target PPFD throughout the year, similar to an indoor setup, then the rule of thumb should be the same: the amount of photons you deliver directly correlates to your yield.

Staffing: Scale Dictates Structure

There are many similarities in how to staff a facility because the tasks are largely the same. Cannabis goes through the same cycles weather they’re grown indoors or under glass. The big differentiator is scale.

In an indoor facility, you might be harvesting 50-pound batches every week. Your harvest, cleanup, and room reset teams might work on a very consistent, weekly schedule. Often, indoor teams “cycle around the projects,” meaning the planting team also helps with harvest, hanging, and bucking. Some indoor facilities even require 24-hour employees, perhaps running rooms at night for energy purposes. Multi-level facilities, while more complex to build, can offer personnel efficiency because employees don’t have to travel as far to do their work.

In a greenhouse, especially a large one, you might harvest 1,000 pounds in a batch, but perhaps only once a month. This means your personnel needs and scheduling will be different. You might have a specific harvest crew that comes in periodically, and then a dedicated “plant team” that manages cultivation for the rest of the cycle. Larger greenhouses often have more staff, treating operations a bit more like commercial agriculture.

My Advice: Choosing Your Path (Especially for New Growers)

If you’re a new grower in a “magical land” where zoning isn’t an issue and you’re well-funded, my first piece of advice is to hire an experienced grower. They’ll help you navigate some hard decisions, pulling from their previous experience.

But if I had to nudge you: growing indoors is generally more forgiving and easier for an inexperienced grower. The level of control makes it simpler. Is your temperature too high? Put in more AC. Humidity too high? Get a dehumidifier. These are straightforward, cookie-cutter solutions. An indoor grower can get pre-made soil, push play, and as long as their equipment works and they remember to water, it can be quite easy. Grow tents, in particular, have revolutionized the home grower game because they make growing so accessible.

Greenhouses require more knowledge and know-how. You need to understand the complex relationships between the outside and inside environments and how to manipulate them, often with less equipment.

Finally, geography can have a massive impact. In places like Miami, you’re constantly battling high humidity, high heat, and pest pressure. To produce high-quality cannabis in a Miami greenhouse, you’d need extremely tight controls, possibly equivalent to an indoor facility. If you’re okay with mid-level products and accept some losses (like botrytis), you might get by with less tech. Conversely, in places like Saskatoon, you’re focused on keeping the greenhouse warm and providing enough light during short winter days.

Conclusion: Making the Right Choice for Your Grow

In my years in the industry, I’ve seen successful operations thrive in both indoor and greenhouse settings. There’s no single “best” method; the ideal choice is always context-dependent.

Indoor cultivation offers unparalleled control, leading to superior consistency and quality, especially for premium flower. It’s often the more forgiving path for newer growers due to its predictable environment. However, this precision comes at a higher capital and operational cost.

Greenhouse cultivation leverages natural resources for greater cost-efficiency, particularly in favorable climates. It offers a pathway to high-volume production but demands a more sophisticated understanding of environmental dynamics and a proactive approach to managing external influences like climate and pests. While capable of producing top-tier products, achieving this consistency often requires significant investment in advanced controls.

Ultimately, before breaking ground, ask yourself: What type of product am I aiming for? What market am I serving? What are the specific environmental conditions of my location? And how much control do I need versus how much am I willing to invest to achieve that control? Answering these questions truthfully will guide you to the cultivation method that best suits your brand, your budget, and your long-term vision.

To learn more about what could work best for your grow, reach out and speak to one of our horticulture specialists. They can assist you in analyzing your environment and goals.

The post Indoor vs. Greenhouse Cannabis Cultivation: An Industry Veteran’s Perspective appeared first on Fluence.

Installing LED lighting in a cannabis facility isn’t just a plug-and-play upgrade. It’s a complex process that requires strategic planning, technical precision, and collaboration across teams. Whether you’re retrofitting an old space or building from scratch, avoiding missteps starts with knowing what to prepare for.

We spoke with Chris Bezuyen, Application Engineering Manager for Fluence and Philips Horticulture, who has led countless lighting deployments across North America. His team has seen what works, what fails, and what’s often overlooked. Here are the five most important things to get right from the start.

1. Hold a Pre-Wire Meeting Before Any Work Begins

The most effective LED installations start with communication—and the most crucial tool is the pre-wire meeting.

“First and foremost, let’s make sure everybody’s on the same page,” says Bezuyen. “Make sure everyone reads the installation instructions and reviews the supplied system design documentation.”

This short meeting—often less than an hour—can prevent costly mistakes later by ensuring all stakeholders understand fixture layout, electrical plans, and system requirements. It also helps verify that all components have arrived, are undamaged, and are ready for installation.

“I’ve seen it more often where an installer says, ‘I’ve seen this before,’ and makes assumptions—then ends up starting from the wrong spot,” Chris notes. “The pre-wire meetings avoid that.”

2. Get Electrical and HVAC Planning Right Up Front

Many installations fall short because cultivators assume existing electrical systems or HVAC setups will suffice. That’s a costly gamble.

“Electrical planning is mission critical,” Chris emphasizes. “So often cultivators assume they have adequate power capacity or that their panels are suitable. You want to confirm panel capacity, circuit availability, and load balancing.”

He also warns against underestimating HVAC requirements. LEDs produce less radiant heat than HPS lights, which changes the thermal profile and relative humidity composition of a room.

“HVAC is so fundamental for a grow,” he says. “With LEDs, there’s less radiant heat, so the humidity increases. Cultivators need to be aware of how this affects the environment and plan accordingly.”

Upfront consultations with certified electricians and HVAC engineers with horticultural experience help avoid tripped breakers, poor climate control, and unplanned downtime. Waiting until installation day to address these systems can derail even the most well-designed lighting plan.

3. Customize Your Layout for Uniform Light Distribution

There isn’t a one-size-fits-all lighting template in cannabis cultivation. A proper layout should reflect your canopy structure, crop targets, and facility limitations.

“Our lighting layouts are very much tailored to the canopy and to the facility,” Chris explains. “Uniformity is so important for production. A uniform design ensures even growth and makes the grower’s day easier.”

Bezuyen’s team uses PPFD targets and cultivation style to inform fixture selection, spacing, and mounting height. This process not only supports plant health but also simplifies workflows for the grow team.

“We want to ensure the luminaires are hanging at the right spacing and height,” he adds. “That starts with pre-planning and reviewing the design with the grower.”

4. Differentiate Between Retrofits and New Builds

Retrofitting, or installing LEDs in an existing facility, presents different challenges when compared to starting with a blank slate. And those differences should shape your entire planning process.

“With a new build, you can optimize from day one,” says Bezuyen. “You can tailor power distribution, HVAC integration, and even plan for scalability.”

In contrast, retrofits often involve aging infrastructure, limited ceiling heights, and immovable objects that affect light distribution.

“More often than not, we bump into structural obstacles,” he says. “Obstructions make it challenging to achieve uniformity, but our team works around them to deliver the best possible lighting plan.”

Retrofitting may also require infrastructure upgrades—so budget and schedule accordingly.

5. Choose a Lighting Partner, Not Just a Vendor

Many lighting manufacturers sell you the hardware and leave you to figure the rest out on your own. Fluence takes a different approach.

“We want to act as partners, not just suppliers,” Chris says. “We get involved from the design phase, and we want to ensure there is alignment from delivery all the way to being fully operational.”

Bezuyen’s team offers virtual support, detailed design documentation, and—when needed—onsite visits. Their goal is to make sure the install follows the design and hits the performance targets.

“We try to do most of it remotely,” he explains. “But if needed, we’ll come to the facility to ensure it’s ready. It’s all about making sure the grower succeeds.”

Final Thoughts: Avoiding Downtime Starts with Planning

Whether you’re upgrading a single room or launching a new facility, these five essentials are your blueprint for success. From verifying electrical capacity to tailoring fixture layouts, every detail matters.

“The things we can do proactively ahead of time help avoid costly delays and costly downtime,” says Bezuyen.

His advice is clear: plan early, consult experts, and choose a partner who will walk with you from design to deployment. That’s the recipe for a smooth LED lighting installation that delivers performance, efficiency, and consistent yields.

The post 5 Keys to a Successful Cannabis LED Lighting Installation appeared first on Fluence.