The Lighting Knowledge
Company, since 1981
For over 45 years, P.L. Light Systems has engineered horticultural lighting for commercial greenhouses, vertical farms, and indoor cultivators across North America.
We are horticultural lighting specialists, not a fixture reseller.
P.L. Light Systems specifies, sources, and engineers horticultural lighting for commercial growers. Every LED fixture is DLC Horticultural Certified and CSA-listed. Every light plan is modeled with professional light planning software against a real room and location. We don't resell what we don't engineer.
Each featured install links to a full case study. See all projects
45+ years of horticultural lighting
From the founding of a specialty horticulture lighting supplier in Beamsville to the engineered LED systems powering today's largest commercial CEA growing operations across North, Central, and South America.
P.L. Light Systems is founded in Beamsville
Established in Beamsville, Ontario to supply horticultural lighting to North American greenhouse growers. Early years focused on replacement lamps and ballasts for existing HID and magnetic HPS systems.
Moving from lamps to engineered systems
First full horticultural lighting systems delivered to Ontario cut-flower and vegetable greenhouses. Fixture, reflector, and ballast specified together for the unique needs of each crop and greenhouse structure.
Electronic HPS becomes the industry workhorse
Electronic ballasts gain in popularity amongst horticulture industry for their efficiency and output. P.L. Light Systems scales HPS supply across Ontario, Quebec, and into U.S. greenhouses.
Direct service across North, Central, and South America
P.L. Light Systems sales and support extend beyond Canada and the United States to Mexico, Central, and South America. Our focus stays on this continent: we design for its climates, crops, and growing conditions.
Double-Ended HPS technology is introduced
The innovation and introduction of a double-ended connection for HPS lamps delivers a more uniform light spread across the canopy and longer lamp life when paired with a high-frequency electronic ballast.
LED enters the product engineering roadmap
P.L. Light Systems launches its first LED product: the HortiLED TOP. The first commercial LED trials are launched. Early trial data feeds the internal research practice that informs later product development.
Technical content becomes a core service
As The Lighting Knowledge Company, P.L. Light Systems' investment in published resources grows into what is now a 140+ article Knowledge Center: cultivation guides, expert insights, listicles, and per-crop lighting strategy.
Cannabis lighting delivered at commercial scale
Pure Sunfarms, Canopy Growth Corp, and other licensed Canadian cannabis producers deploy hybrid systems from P.L. Light Systems. Hybrid HPS + LED lighting strategies emerge from the engineering practice.
Tunable-spectrum LED becomes the standard
Tunable-spectrum supplemental LED fixtures paired with wireless MeshIQ controls unlock DLI management, dimming schedules, and spectrum control across the CEA facility, zone by zone.
Celebrating 45+ years of lighting engineering
An in-house lighting plan practice using professional light planning software for photometric design, plus the deepest free technical library in horticultural lighting, 45 years in the making.
What we've built
Founded 1981 in Beamsville, Ontario. Continuously operating, independently operated, now headquartered in Hamilton, Ontario.
Measured, published outcomes with named growers across North America. Real projects and real numbers, not marketing fluff.
The deepest thought leadership library in horticultural lighting. Every article written in-house by the P.L. Light Systems team.
Canada, United States, Mexico, Central and South America. One team, one engineering standard.
Every plan is designed by P.L. Light Systems specialists. We don’t hand projects to distributors or dealers.
One team. One engineering standard
P.L. Light Systems is a North American grow light manufacturer. We design, sell, and service supplemental horticultural lighting across Canada, the United States, Mexico, and Central and South America. We don’t sell into Europe or Asia. North American growers are our focus, and our engineering practice is tuned to the climates, crops, and utility economics of the region.
- Canada · Victor Wiens, Regional Sales Manager
- Eastern United States · Matt Sauls, Regional Sales Manager
- Western United States · Joey Viegas, Regional Sales Manager
- Central & South America · Serviced by HQ
- Headquarters · Hamilton, Ontario
Source: P.L. Light Systems sales territory map, 2026
The people behind every custom P.L. Light Systems plan
Each region we serve is owned by a named sales manager with deep greenhouse and horticultural experience. Customer service runs across every territory, anchoring projects from spec sheet to post-commissioning.
Engineering, end to end
A commercial fixture is engineered across four disciplines: photometric, thermal, optical, and mechanical. Every one matters. The work spans custom light plans and calculations, mounting solutions, and new product development. A light plan isn’t a photometric drawing; it’s a system design that ships only after all four hold up. The four stages below are how every P.L. Light Systems deployment moves from brief to operating facility.
Understand the facility
and the crop
Room dimensions, mounting heights, greenhouse glazing, crop stage strategy, DLI targets, power constraints, geography, and budget. Every project starts with the specifics of your operation. We build the complete brief before we quote a single fixture.
Engineer the custom
light plan
Layout and simulation with professional light planning software. PPFD uniformity, photoperiod strategy, connected load, optical distribution, and thermal load all sized against your room. You receive a detailed light plan unique to your operation, not just a fixture count.
Ship the system
to your facility
Systems ship from our Hamilton, Ontario facility. Fixtures arrive on pallets with the documented light plan and cabling layout. Your licensed electrician wires the system. Our team stays on call for technical questions from delivery through commissioning.
Verify, maintain, and stand
behind the system
Post-commissioning measurement to verify your light levels match the plan, seasonal tuning, fixture maintenance, and warranty service across North America. If the deployed fixtures aren’t hitting the predicted PPFD, our team returns to recalibrate and service.
Where P.L. Light Systems light plans are engineered
Our Hamilton, Ontario facility houses the light plan engineering team and the assembly floor. Photometric design happens here, end to end. The standard hasn’t changed since 1981: Dutch craftsmanship, held to the most stringent North American regulatory requirements.
In-house photometric design
Every custom light plan is built with professional light planning software, modeled against your actual room geometry and geography.
Canadian assembly and QA
Every fixture is assembled, burn-in tested, and QA checked in our Hamilton, Ontario facility before it ever ships to your growing operation.
DLC + CSA + IP66
Every LED fixture is DLC Horticultural Listed, CSA Certified, and IP66 wet-location rated, with certification numbers on the spec sheet for rebates.
Light plan design team
A dedicated in-house team designs every custom light plan, tuned to your facility’s geometry, crops, and local growing conditions.
Where to find us this year
P.L. Light Systems exhibits at the trade shows that bring growers, owners, operators, and industry experts together. If you’re attending, stop by. We usually have product brochures, fixture demos, and in-house experts in attendance to talk through your project.
GreenTech North America
Pennsylvania Convention Center · 1101 Arch St.
The North American edition of the global horticulture-tech show. Engineers, growers, and integrators across CEA. Live fixture demos and engineering Q&A at the booth.
Canadian Greenhouse Conference
Niagara Falls Convention Centre
The flagship Canadian commercial-greenhouse conference. Two days of grower-led research sessions, the largest exhibitor floor in the country, and dedicated time on the schedule for lighting decisions.
Expo Québec Vert
Espace Saint-Hyacinthe
A major Québec horticulture and landscaping trade show, with 200+ exhibitors and specialized conference programming across the sector.
Leamington Greenhouse Grower Expo
Regional trade event for the Leamington-area greenhouse growing community, one of Canada's largest greenhouse-growing regions.
Trusted by commercial growers across North America
Growers who light their operations with P.L. Light Systems, in their words.
The support of P.L. Light Systems has been tremendous. Their in-depth demonstration of the spectrum and efficiency of their lights is second to none. We had one fixture with a warranty claim, and it was replaced (exchanged) promptly with no hassle. P.L. Light Systems offers excellent value in their offering.
P.L. Light is a trusted long-term partner. They are nimble and flexible, going the extra mile to help our projects succeed. Their staff are polite, professional, and pick up the phone when we call. Their technical skill and humble, honest approach to their work when combined with the performance of their products and warranty support makes them a first-call resource for us when we have lighting needs.
On top of their excellent commercial products, P.L. Light Systems offers the best customer service in the industry. They are always responsive and flexible with any of our lighting support needs. Over the years and countless installations, we know that we can always trust that the engineered light plans provided by P.L. are spot on and delivered exactly as planned, never overstated.
Active in the industries we serve
P.L. Light Systems participates in the trade associations and grower groups that set horticultural lighting practice in North America, and our fixtures are certified by the industry bodies that matter for rebate, safety, and performance listings.
Common questions about our company
Where is P.L. Light Systems headquartered?
What regions does P.L. Light Systems serve?
Are P.L. Light Systems fixtures designed in-house?
Do you work with distributors or direct with growers?
Ready for a real light plan?
Send us your room geometry, crop, and DLI target. Get back a no-cost engineered light plan, modeled against your actual facility, typically within 1 to 2 business days.