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Philips Greenpower 400 Watt
The Philips Master GreenPower 400 Watt is the professional horticultural lamp from Signify, engineered with a ceramic discharge tube and PIA technology for exceptional spectral stability across the full rated life. This HPS lamp outputs 58,000 lumens at 136 lm/W with a PPF of 750 µmol/s and a colour temperature of 2000 Kelvin. The characteristic GreenPower spectrum combines powerful red-orange emission with a slightly enhanced blue component, making this lamp effective for both vegetative and flowering phases. With 90% PPF maintenance after 21,000 hours, Philips sets the absolute benchmark in lifespan and consistency. Dimmable, E40 base. Order from Plant and Flower.
Philips Master GreenPower 400W – The Industry Benchmark in Professional Grow Lighting
The Philips Master GreenPower 400W is not simply an HPS lamp — it is the reference lamp against which all other grow lamps are measured. Developed by Signify (formerly Philips Lighting) for professional greenhouses, research institutions and elite cultivators, the GreenPower has been the first choice of professionals who accept no compromises for decades. In our 400W HPS category, this is the lamp for growers who demand the best available technology.
Ceramic Discharge Tube with PIA Technology
At the core of the GreenPower 400W is a ceramic discharge tube paired with Signify's proprietary PIA technology (Philips Integrated Antenna). This combination delivers reliable ignition, stable arc discharge and consistent spectral output throughout the full rated life. Where standard HPS lamps with quartz arc tubes gradually shift in spectrum as they age, the ceramic tube of the GreenPower maintains its spectral characteristics substantially longer.
Performance That Sets the Standard
At 58,000 lumens with an efficacy of 136 lm/W and a PPF of 750 µmol/s, the GreenPower 400W delivers a substantial volume of plant-useable light. The GreenPower spectrum at 2000K combines the powerful red-orange radiation that flowering plants require with a slightly enhanced blue component — a characteristic that also makes this lamp effective during the vegetative phase and distinguishes it from pure flowering lamps.
- 90% PPF maintenance after 21,000 hours: the most consistent light output in the 400W class for reliable results season after season.
- Dimmable: fully compatible with dimmable electronic ballasts for flexible light intensity control throughout the grow cycle.
- E40 base: universal compatibility with all 400W ballasts, optimal performance with electronic units.
Order the Philips GreenPower 400W from Plant & Flower with fast delivery across Belgium. Pair with a Superplant 400W ballast for optimal performance, or choose a complete 400W lighting set with Philips GreenPower.
What makes the Philips GreenPower different from other 400W HPS lamps?
The GreenPower stands apart on three key points: the ceramic discharge tube delivers a more stable spectrum than quartz tube lamps, the PIA technology ensures reliable ignition and extended lifespan, and the slightly enhanced blue component makes the lamp suitable for both vegetative growth and flowering. With 90% PPF maintenance after 21,000 hours, the GreenPower offers the most consistent light output in its class.
