You'll get a better answer if you point to the specific chart you're referring to. Contestant #3: High-Pressure Sodium (HPS) Grow Light The yellow glow of High-Pressure Sodium street lamps. A brand new, top-of-the-line 600W HPS grow light could cost $200, but I could easily end up paying $800 or more for an equivalent LED grow light. Current lighting: 16 ceiling mounted 400 Watt High Pressure Sodium lampsOperational hours: 8AM to 8PM dailyCurrent cost of electricity: 13.9 cents per kilowatt hour (kWh), 16 lights @ 400 Watts each = 6400 Watts or 6.4 kilowatts. The High-Pressure Sodium bulb originated in the 1970’s and became ubiquitous in street and warehouse lighting. check out the. Comparison Chart high Pressure Sodium vs. I looked at some charts and found that High Pressure Sodium is more efficient than an LED bulb. The other issue with LED streetlights is that the high level of optical control has been used by suppliers to put a lot of light at high angles, 50-70 degrees, to improve uniformity and/or to increase pole spacing. Ceramic metal halide (CMH) is another good option for street lighting. One strange thing I have seen on a few roads is LED … Light intensity is measured in lumens. I discovered something new. Incandescant, Fluorescent, etc.) Thankfully, the market has changed a lot since due to their high power consumption, short lifespan, and environmental drawbacks. Both Metal Halide and High Pressure Sodium bulbs are part of the HID family of bulbs. The comparison above between High Pressure Sodium grow lights vs LED grow lights clearly indicates that the LED grow lights have a significant advantage when compared to HPS lights. 2.) So, they replaced functioning 400w HPS fixtures with stuck on 280w LED fixtures. High Cost of Premium Models. LED Street Lights: Below you can find all the technical parameters of the High Pressure Sodium, HPS, lights versus the LED Street Lights and the pro's and con's of both of the lights. HPS vs. By running a 2000 watt load for 1 hour, 2 kilowatt hours of electricity have been consumed. 94 I got two Sylvania ET-23.5 mogul based 100w ceramic metal halide lamps. Before LED vs HPS comparison, there was a time when HPS (High-pressure Sodium) lamps were dominating the residential, office, farming and industrial lighting scene. High pressure sodium (HPS) lights have been the heavyweight champion of the lighting world for decades now, ... Aside from the upfront cost of purchasing lights, growers must also consider the cost of electricity. Kind LED say you can. High-Pressure Sodium: Hot, Hot Heat. I do not remember noticing a glare problem from them while driving, so I think it has to do with more than just color temperature. The reigning champion of grow lights. The ones I saw looked about 4500K. https://www.mge.com/saving-energy/ho...comparison.htm, http://energy.gov/eere/ssl/downloads...ghting-rd-plan, http://www.edisonreport.net/files/64...A_2011_OCT.pdf, Flashlight Electronics - Batteries Included, Smoke and Fire, Hot Cells and Close Calls - The dangerous side of batteries, Flashlights & Parts, Accessories & Electronics, WTS: Flashlight Electronics - Batteries/Chargers Included, WTS: Headlamps, Spotlights & HID Flashlights, Other Personal Type Lights/Beyond Flashlights, WTS: Lasers, Night Vision, Electroluminescent, GID, Fixed, WTS: Transportation Lighting - Automotive, Motorcycles, Bicycles, WTS: Cameras, Accessories, Video Equipment, WTS: Custom Titanium & Exotic Metals Flashlights, Homemade and Modified Flashlights Discussion, CPF Custom Flashlight Builders and Modders, Personal Gadgetry & Non-flashlight Electronics, If this is your first visit, be sure to They offer excellent color rendering (up to 96 CRI), are very efficient (90-110 l/W, about the same as most current LED street lamps), and the advantage is they have a lower initial cost for higher wattage applications than LED. While upgrading to LED provides a lot of benefits, high pressure sodium (HPS) lamps still provide some of the most efficient lighting available. Between fluorescent, LEDs, and high-pressure sodium (HPS), the great wide world of grow lights can get confusing. I think it has something to do with high pressure and low pressure sodium bulbs having higher out-out per watt, but only in narrow spectra (low pressure sodium being really narrow), or something like that. LED wins this bout. I will take a white LED street light over a sodium or mercury vapor lamp any day. The cost, in this case would be $0.278 for one hour of usage if electricity is at the usage rate of 13.9 cents per kilowatt hour. LED claim to fame is you can get a reasonably white light source for much less energy than a white metal halide or mercury vapor (?). Chapter 1 The Difficulty in Choosing the Right Grow Light Every 2 months you use your new LED lights pays for one of your new fixtures. Do you think the HPS can be dethroned? It is a better light than high pressure sodium. No, I know LED street lighting can cause glare because of the intense point-like light sources of the bare emitters, but this is not what I was talking about. Are LED street lights actually more efficient than High Pressure Sodium? Since both types of lamp are HID, they are designed to produce generous amounts of light, or lumens. High pressure sodium lights work by creating an electric arc through vaporized sodium metal, while additional materials and gases work to start the lamp and control the its color. The principal difference between low and high pressure sodium lights is the operating pressure inside the lamp. Can you really increase yields and grow quality cannabis with energy-saving lights? HPS VS LED High Pressure Sodium What is a High Pressure Sodium Light: High Pressure Sodium (HPS) lights, similar to LPS lights, are a specific type of gas-discharge light (also known as a High Intensity Discharge, HID or arc light). Many municipalities are weighing the benefits of both LEDs and high-pressure sodium (HPS) as they consider their street-light options. One kilowatt hour is equal to running a 1000 watt load for one hour. Unfortunately, the potential for glare. Even the high-end varieties cost less than most LEDs. But I have found that driving on roads illuminated with the new LED streetlamps are a little harsh on my eyes, it feels like there is more glare, and I would even go so far as to say it might make driving conditions more dangerous. LED. Here are 5 truths about growing bigger yields with LED vs HPS grow lights. Instructions; Select your electric rate (or click to enter your own) You can calculate results for up to four types of lights. I Got tired of looking for the light at the end of the tunnel so i lit that bitch up myself! I'm talking about driving for over 30 minutes with the entire stretch of road constantly illuminated by LED, it starts getting to you after a while. Score: LED 5, Metal Halide 0 LED floodlights vs High Pressure Sodium floodlights Efficiency High Pressure Sodium floodlights come closer to rivalling LED floodlights than halogen and metal halide. The main benefit of using HPS is that they are the only light source with a similar efficiency to LEDs … Moreover, HPS lights are modular so if one bulb in the set-up fails, it can be changed without replacing the entire system… the go-to choice for cultivating cannabis on a tight budget. I am not saying high pressure sodium illumination is not hideous, but at night the orange illumination is softer on the eyes than the illumination from a 5000K LED fixture. High Pressure Sodium lights have often been seen as the best grow light available for amateurs and professionals alike, and the key to their popularity is their incredible raw light output. They have a rated life of 24,000 hours. YSeparate topic entirely but some time ago I postulated that low pressure sodium supplemented with low wattage LED lighting in the same fixture might be more efficient, or at least more economical than high pressure sodium. Low and High Pressure Sodium lights are the only light whose source efficiency compares to LEDs (values range between 50 and 160 lumens/watt for LPS and slightly less for HPS). Oh and yes, some are failing already. LEDs are an instant on and install off. Current lighting: 16 ceiling mounted 400 Watt High Pressure Sodium lamps Operational hours: 8AM to 8PM daily Current cost of electricity: 13.9 cents per kilowatt hour (kWh) They estimated Metal Halide lights have a long warm up time and can take 15-30 minutes to get to full power. On a quest for the best lights for growing cannabis? What's that light cost you? Well LED certainly has better color rendering than sodium. In fact most of the LED fixtures going up right now are. Several other people have commented this as well. Why bother buying a kind of light if half of what it emits goes the opposite direction of where you want it to go? High-pressure sodium (HPS) lamps would be more cost effective than light-emitting-diode (LED) technology, although the researchers say LEDs could become more economical in the future. Since the LEDs are on 24/7, they are effectively using more energy. Shelly Lighting June 21, 2018. Warehouse lighting example. Wow, ceramic metal halide are 90-93 CRI? The lamp works by creating an electric arc through … The popularity of that technology is not just due to its energy efficiency. But what about LED street lights? Since the technology for this grow light has been around for so long, HPS lights are inexpensive to produce. High Pressure Sodium Lights Vs Led Cost. not the rest of the lighting infrastructure, such as the poles and wires. Here comes the king! In 32 months they have literally paid for themselves in savings even if you do not take into account the money you save in replacement HPS bulbs, installation and down time. Join us as we compare and contrast metal halide, high-pressure sodium, CFL, plasma and LED grow lights to determine which system works best for you. For each: Select the type of lamp (i.e. They'd give you lots of light with high efficiency and high CRI. High pressure sodium bulbs ("lamps") are an old standby for lighting that's still used today in spite of so much talk of LED lights. Sunlite 03610-SU LU70/MED High Pressure Sodium Light Bulb, 70 Watts, ED17/MED, Medium Base (E26), ANSI Code S55, 6000 Lumen, 24000 Life Hours, Clear, 2100K 4.4 out of … Are actually designed for street lighting sodium street lamps to full power adds to their high power consumption short... 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