NLC V5.2: DLC Just Made Grow Light Controllers Rebate-Eligible for the First Time
DLC's NLC V5.2 takes effect Aug. 17, 2026, opening its rebate-recognized controls list to horticultural systems for the first time.
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Grow Light Science & Verification Cases
Deep dives on PPFD, spectrum, efficacy claims, and the manufacturers that actually deliver.
Fluence’s Parent Just Cut 900 Jobs. Here’s How to Vet a Grow Light Manufacturer’s Staying Power in 2026
Signify cut 900 jobs and Gavita went independent in 2026. Here's how to check a grow light manufacturer's financial footing before you buy.
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Why Commercial Grow Lights Are Losing Their Onboard Drivers
LED power supplies fail more than any other component in commercial grow lights. See why VoltServer, Advanced Energy, and TSRgrow are moving drivers off the fixture.
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Customizable vs. Predefined Spectra: How DLC Hort V4.0 Tests Multi-Channel Grow Lights
DLC Hort V4.0 splits tunable grow lights into two spectrum categories with different testing rules. Here's what commercial buyers need to check before ordering.
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Grow Light Lifespan: What LM-80 Testing Proves, and Why Drivers Fail First
DLC V4.0 tightened efficacy rules in 2026, but lifespan claims go unchecked. Here's what LM-80 and TM-21 testing actually prove, and why drivers fail first.
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Why Your PAR Meter Might Understate Your Grow Light by 25% or More
Quantum sensors miscount deep-red LED photons by up to 26 percent, and calibration source explains why your PAR meter reading diverges from spec.
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ASHRAE, California, and DLC Just Converged on the Same Grow Light Efficacy Floor
ASHRAE, California, and DLC raised grow light efficacy floors to nearly the same number in one year. What it means for fixture buyers.
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Grow Light Control Protocols Compared: 0-10V, DALI, and the Multi-Zone Wiring Mistakes Costing Growers Money
0-10V, DALI, and proprietary grow light control compared: real costs, common wiring failures, and what DLC's 2026 rebate tiers require.
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California’s Title 24 Now Regulates Grow Light Efficacy: The 2025 Energy Code Explained
California's 2025 energy code sets a 2.3 µmol/J efficacy floor and mandatory controls for grow lights. Here's what changed, and how Massachusetts differs.
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Samsung Is Exiting Horticultural LEDs: What Changes Inside Your Next Grow Light
Samsung is exiting horticultural LED chips. Here's what's replacing them, what changes in your fixture, and what to verify before you buy.
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