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Cannabis Grows Flourishing Under the Ever-Increasing, Energy-Efficiency of LED Lights

  1. Beenthere2Hippie
    View attachment 53167 TUMWATER, Wash. — Behind the covered windows of a nondescript two-story building near the Olympia Regional Airport, hundreds of marijuana plants were flowering recently in the purple haze of 40 LED lights.

    It was part of a high-stakes experiment in energy conservation — an undertaking subsidized by the local electric company. With cannabis cultivation poised to become a big business in some parts of the country, power companies and government officials hope it will grow into a green industry.

    The plants here, destined for sale in the form of dried flowers, joints or edible items, were just a few weeks from harvest and exuding the potent aroma of a stash room for the Grateful Dead. But the energy-efficient LED lights were the focus of attention.

    “We wanted to find a way to save energy — that was important to us,” said Rodger Rutter, a retired airline pilot who started this indoor pot-farming business, Evergrow Northwest, after Washington State legalized recreational cannabis in 2012.
    “We wanted to be able to offer the best product at the best price,” Mr. Rutter said, “and a big part of the cost is energy.”

    As cannabis has increasingly gone legitimate — about two dozen states had already legalized it in some form before several others eased restrictions on Election Day — electric utilities have struggled to cope with the intensive energy demands of the proliferating industry.

    Besides blown transformers and blackouts for utilities in some places, the ascent of Cannabis Inc. has also raised clean-air concerns in parts of the country where fossil fuels are still the main source of electric power. Even in many places where growing marijuana is legal, cultivators are required to keep their crops out of public view. And in any case, many growers prefer having the ability to control the environment by raising the plants indoors.

    Traditionally, indoor producers — formerly relegated to basements, garages and shadowy warehouses — relied on hot, high-intensity lights. When air-conditioning and ventilation were included, the energy used to grow a single marijuana plant would run seven refrigerators for the same period, according to one estimate. But under an incentive program with the local utility here, Evergrow was able to install more than 100 sophisticated LED grow lights, hoping to reduce costs without sacrificing quality or yield. The utility, Puget Sound Energy, which gets about a third of its electricity from hydropower and most of the rest from coal and natural gas, offers grants to help customers offset the cost of energy-efficiency upgrades.

    Although the LED lights are more expensive up front — they can run $1,600 each, as opposed to $350 for the high-pressure sodium lights traditionally used — their lower electricity requirements mean they can save money in the long run. It is not just that the LED lights take so much less energy to operate. They also run cooler, requiring less air-conditioning.

    “It’s a snowball effect,” Mr. Rutter said, surrounded by dozens of specimens with names like Lodi Dodi and Secret Recipe. “You just don’t suck up as much energy.”

    Utilities elsewhere have felt the energy impact of liberalized marijuana laws. For example, Pacific Power, based in Portland, Ore., traced some neighborhood power outages to clusters of residential customers who were taking advantage of state laws allowing up to four marijuana plants per household for personal use.

    In Denver, home to one of the largest and most advanced cannabis industries, demand for energy and water ran high enough that the city’s Department of Environmental Health convened a working group to develop recommendations to help make the businesses more sustainable.

    The cultivation and sale of marijuana, though permitted under a patchwork of state laws, are still federal crimes. That has made it a challenge for utilities to work closely with growers and led to tensions with federal law enforcement agencies. As a result, many electric utilities have been reluctant to offer incentives or rebates to cannabis growers for energy-efficiency upgrades. That has been particularly true in the Pacific Northwest, because many of the region’s energy discount programs are financed by the Bonneville Power Administration, a federal nonprofit marketer of electricity whose rules prohibit subsidizing cannabis operations.

    Portland General Electric, for instance, had to set up a separate billing system for home-grow operations to keep them separate from Bonneville. Evergrow’s utility, Puget Sound Energy, is not a Bonneville customer, said Dave Montgomery, who leads the utility’s business energy management group. “It is legal here,” he said of marijuana farming, “and we’re obligated to provide them the same services we would with anybody else.”

    Using its own energy-efficiency programs for new enterprises has helped Puget Sound Energy avoid the overloaded transformers that resulted when cannabis cultivation was first catching on, Mr. Montgomery said. And yet growers, many with experience in illicit operations, have often resisted LEDs, preferring to follow their own tried-and-true methods. Many say that earlier versions of LEDs simply did not perform as well as the high-pressure sodium or metal halide lamps that growers favored, especially when the plants began producing flowers, the valued part of the yield.

    But as horticultural lighting companies like Heliospectra and P. L. Light Systems have turned their focus to the cannabis market with more sophisticated LEDs, interest has picked up. Lighting Science, which makes the VividGro lights that Evergrow uses, doubled sales of that line this year, the company recently announced.

    The newer products are able to generate not only the light intensity but also the color spectrum the plants need to thrive, without wasting energy on unnecessary parts of the spectrum. For cannabis, that means growers might use lights that appear white but have more blue for seedlings, and then shift to lighting with more intensity and more red as they mature. Later, shortening the amount of time the plants spend under illumination each day, which mimics how daylight diminishes as the seasons change, triggers flowering.

    At Evergrow, the company cultivates most of its plants under LEDs, but keeps one space, known as the energy-suck room, illuminated by high-pressure sodium lights as a kind of experimental control. The plants in that room, which was hovering around 88 degrees during a recent visit despite 16 fans helping to circulate cold air both from outside and from an overhead air-conditioning vent, produce slightly more flowers but with somewhat less potency.

    “It takes a lot of energy to keep this room functioning,” said Mr. Rutter, wearing a T-shirt and jeans under the bright yellow glare, his forehead glistening as he gazed across plants lush with distinctive, hand-shaped leaves and fuzzy, bud-laden flower stalks.

    Mr. Rutter estimates that the energy-suck room accounts for more than half of his roughly $5,000 monthly electric bill, though it contains only about one-quarter of the building’s grow lights. Mr. Rutter said that with the utility’s rebates, he ended up paying about $72,000 for the LED lights, which would normally cost around $162,000.

    For Mr. Rutter, 62, the new business was a way to keep busy when he decided to retire from flying for Frontier Airlines. He said he had smoked marijuana in college but had long since given it up. Mr. Rutter started Evergrow with his 26-year-old son, Adam, who began growing plants at home as a teenager. Although he did not entirely approve of Adam’s using the drug, Mr. Rutter condoned his son’s green-thumb efforts.

    “He really had a passion for it,” Mr. Rutter said. “I saw that it was something he was good at. For a time it was awkward, but then this came along.”

    Now that cannabis growing is legal, Mr. Rutter said, the stigma has dissipated, and the company’s sales keep increasing. Through October, the company reported $513,880 in sales for this year, more than double what it sold in all of 2015.

    “We can’t grow it fast enough,” he said with a chuckle as a group of employees quickly filled and sealed plastic packages of joints and tossed them into a bin. “We’d like to figure out a way to get the plants on steroids.”

    By Diane Cardwell - The New York Times/Nov. 25, 2016
    Photos: Ian C. Bates, nyt
    Newshawk Crew

    Author Bio

    BT2H is a retired news editor and writer from the NYC area who, for health reasons, retired to a southern US state early, and where BT2H continues to write and to post drug-related news to DF.


  1. Alfa
    Re: Cannabis Grows Flourishing Under the Ever-Increasing, Energy-Efficiency of LED Li

    I highly doubt that they don't sacrifice yield with LED.
  2. beentheredonethatagain
    Re: Cannabis Grows Flourishing Under the Ever-Increasing, Energy-Efficiency of LED Li

    I totally conquer with Alfa, led lights do not have the light intensifying output needed to properly flower marijuana . yes they will work for the top of the plant but will not penetrate past the canopy with enough energy to make nice compact buds. Side lighting is going to help but remember even with high intensity bulbs the light dissipates rapidly with just a couple of feet. L.e.d. is much weaker causing light to disapate with just a few inches, therefore they would have to be almost touching the plant to gain its needed lumen amount. Yes for vegetative growth of short plants they do work well enough, but never going to be the lighting needed to flower a plant to the nice big buds that comes from high pressure sodium lights .
  3. foremoreaddict
    Re: Cannabis Grows Flourishing Under the Ever-Increasing, Energy-Efficiency of LED Li

    The sun is a pretty energy efficient light source I read somewhere. I have also heard plants can grow pretty good under it.

    "required to keep their crops out of public view"
    Yea nature can be pretty offensive. Poppies are also pretty unsightly.

    LEDs are getting better. You can still grow good buds with hps and mh though.
  4. CaptainTripps
    Re: Cannabis Grows Flourishing Under the Ever-Increasing, Energy-Efficiency of LED Li

    The area this will have an impact on is the non legal growing arena. The three things that screw over clandestine growers are smell, electrical use and heat. These lights can help with the last two of these.

    I don't think they will be a big commercial success for the legal market, unless it is a feel good kind of thing where people are willing to pay a little more for what they view as a more "ethical" product.

    With the new administration coming to Washington D.C. it is important that the debate be clear. The debate is whether or not we will have a flourishing legal, regulated and taxed marijuana market or we will have a flourishing wide open illegal marijuana market. A crippled marijuana market is not going to happen. Indoor pot is here to stay and innovations like these help send the message that effective enforcement of marijuana laws is not possible.

    Less power to the plants, more power to the people.
  5. foremoreaddict
    Re: Cannabis Grows Flourishing Under the Ever-Increasing, Energy-Efficiency of LED Li

    I would say that the biggest thing that screw over clandestine growers are loose lips.
  6. Alfa
    Re: Cannabis Grows Flourishing Under the Ever-Increasing, Energy-Efficiency of LED Li

    News articles about marijuana grow busts often mention: electrical failure (fire) and water supply failure (flooding).
  7. foremoreaddict
    Re: Cannabis Grows Flourishing Under the Ever-Increasing, Energy-Efficiency of LED Li

    I would say odor, high electricity usage (sometimes maybe even SMART meter power signature tracking) and fire would be some top causes. Flooding not so much though because it usually wouldn't attract much attention. The sound of fans, hydroponic water and air pumps would probably help get a few busted. Heat detected buy police FLIR(forward looking infrared) devices is another possible cause.
  8. CaptainTripps
    Re: Cannabis Grows Flourishing Under the Ever-Increasing, Energy-Efficiency of LED Li

    That's an excellent point Alfa. Most grow related busts are due to what I would call "accidents" rather than the result of actual police investigations.

    Foremoreaddict also makes a good point about lose lips. Also domestic disturbances play a big role. Loud music and the occasional botched burglary take their toll as well.

    My point had to do with things that police use in a pro active way. Besides the usual, purchase your way up the food chain type of undercover investigations, what police use are electrical bills and heat sensing equipment ( and occasionally dogs). Electrical bills are becoming an even bigger threat with smart meters that detect and record "when' electricity is used. These combined with very simple computer technology can paint a very clear picture of what consumers are using their power for.
  9. foremoreaddict
    Re: Cannabis Grows Flourishing Under the Ever-Increasing, Energy-Efficiency of LED Li

    It's not just when your timers switch your lights on and off but the "good" meters also can tell the startup signature and identify the type of electrical device being used. Some people have two flower rooms on flipswitch to try to avoid detection but I think there is still at least a detectable trace of a 12/12 cycle.
  10. Alfa
    Re: Cannabis Grows Flourishing Under the Ever-Increasing, Energy-Efficiency of LED Li

    I recently encountered an interesting Dutch news article which was clearly designed by the police to suit a harm reduction purpose. The news article was drafted after a police press release.

    It stated that the police still catches stupid marijuana growers now and then who use old fashioned 'hot' HPS lighting instead of 'cool' LED lighting. 'hot' HPS lighting which flags their grow houses up for areal thermal scanning.

    It seems to me that the Dutch Police try to manipulate / stimulate cannabis growers to use LED because its much safer to use.
  11. foremoreaddict
    Re: Cannabis Grows Flourishing Under the Ever-Increasing, Energy-Efficiency of LED Li

    As far as I know the thermal devices detect surface heat, they don't penetrate further. It's not x-ray vision where can see your op through your cool roof.

    A lot of people don't directly vent the hot air from their grow room outside. They disperse it into other rooms, attic or under the house.

    LEDs aren't cool they are somewhat cooler than HPS. As far as heat detection differences go there is hardly any. If your grow room is too hot get a better extractor fan or an AC unit so your plants stay comfortable.
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