Page 11 - C:\Users\HP Laptop\Desktop\Medical Cannabis Folder\

pure lighting for a green world

LEDS VS HPS LIGHTING

ENERGY SAVINGS

Annual Energy Savings has been calculated based on the recommended LED light set-up in the
next sections and a light for light replacement of a 1000W HPS/600W HPS

Lighting Time
Hours per Day 12
Days per Week 7
Weeks per Year 52

Estimated annual Energy Savings using LEDs $306,738.30

LED VS HPS COMPARISON

Topic LED HPS
Heat Emissions Low High

Environmental Easy to control with better heat dissipation HPS lights also generate a lot of heat, which often
Control requires additional ventilation equipment to
maintain a proper grow room temperature. If not
dealt with accordingly, the added heat can make
growing very difficult

Cycling (Turning On/ LEDs are an ideal light for purposely turning High pressure sodium bulbs may flicker and/or cycle
Off) on and off because they respond rather on and off as the bulb reaches the end of its useful
instantaneously (there is no warm up or cool life. Lights will exhibit a short delay when turning on
down period). They produce steady light because they need to be ignited before reaching a
without flicker. steady state

Lifespan 50,000 hours or more around 10,000 hours
LED lights will continue to operate above- HPS grow bulbs diminish in intensity significantly
average functionality even if a few diodes burn over time and must be replaced regularly every 12-
out here or there 18 months resulting in additional operation costs.

Costs LED lighting has relatively high initial costs and High Pressure Sodium lights are very cheap to
low lifetime costs. The technology pays the purchase as well as fairly cheap to maintain. That
investor back over time. The major payback said, although HPS bulbs have a long lifespan
comes primarily from reduced maintenance relative to most competitors, they still fall short of
costs over time and secondarily from energy LEDs. HPS lights will still likely need to be purchased
efficiency improvements LEDs require a smaller several times and the associated labor costs will
power supply and electrical transformer need to be paid in order to attain the equivalent
lifespan of a single LED light.

Spectrum Unlike other grow lights which are pretty set They are still generally considered poorer in their
in their color spectrum, each LED diode can be replication of daylight than other modern lighting
configured to emit light of a very specific color systems. Without the addition of xenon or mercury,
spectrum chosen by the user. This means that sodium vapour gives off an intensely reddish-yellow
LED grow light color spectra can be adjusted light.
and customized in a modular way that’s
impossible to achieve with any other grow light.