LED technology has advanced significantly, making LEDs more than twice as efficient as HPS lights. This means you get twice the amount of light for the same power or use half the energy for the same light output. LEDs also maintain their spectrum and intensity better over time, eliminating the need for frequent bulb changes. Additionally, HPS lights are being phased out in many states, similar to incandescent bulbs, with generous rebates available for switching to LEDs. Thus, LEDs are now a much more efficient and cost-effective choice for greenhouse lighting.