For many years, High-Pressure Sodium (HPS) lamps were the dominant lighting system used for indoor plant cultivation, as they provided reliable light intensity and were considered the industry standard. However, over the past decade, Light Emitting Diode (LED) technology has progressively taken their place in indoor growing environments. While HPS systems are still widely used today and continue to offer certain advantages—such as strong light penetration and proven performance—modern LED systems bring a range of significant benefits that are reshaping the industry.

New generations of LED lighting are far more energy-efficient, produce less heat, and offer greater control over light spectrum, allowing growers to better tailor conditions to each stage of plant growth. These advantages translate directly into lower electricity consumption, reduced cooling requirements, and overall operational savings. Since energy costs represent a major portion of total production expenses in indoor farming, the improved efficiency of LED technology has become a key factor driving its rapid adoption over traditional HPS systems.

Pro/cons HPS/LED

HPS                                                                                                                        LED