Tag Archives: energy consumption

Can marijuana ever be environmentally friendly?

Natasha Geiling, THINK PROGRESS (from April 20, 2016)

Another big issue that the burgeoning cannabis industry will have to confront as legalization becomes increasingly widespread is the industry’s massive environmental footprint. Cannabis is the country’s most energy-intensive crop, largely because around a third of cannabis cultivation in the United States currently takes place in indoor warehouses, a process that requires huge amounts of lighting, ventilation, cooling, and dehumidifying. According to a 2016 report released by New Frontier Financials, cannabis cultivation annually consumes one percent of the United States’ total electrical output, which for a single industry growing a single crop, is a lot — roughly the equivalent of the electricity used by 1.7 million homes. If energy consumption continues at current levels, the electricity used by indoor cannabis operations in the Northwest alone will double in the next 20 years.

One of the first things that Tyson Haworth does when we meet on his farm in rural Oregon is spread his palms out, up toward the April sunshine, and apologize. “I just applied some predatory fungus in the greenhouse,” he says, splaying his fingers and inspecting his hands. He doesn’t use any synthetic pesticides on his farm, he explains, preferring predatory bugs and bacteria and fungi instead, and before he can show me around, he excuses himself to wash his hands in his house adjacent to the farm. Between the farm and the house, on the other side of the gravel driveway that leads visitors from the winding back roads onto Haworth’s property, is a wooden play structure — a sign of Haworth’s two kids, who are the reason he moved from Portland, about thirty miles north, to Canby.

Them, and because it was getting hard to keep growing his cannabis in a garage.

Haworth started cultivating cannabis in 2007, after his wife had to undergo a second back operation. The first time around, she took opiates to manage the pain, but she didn’t want to do that again. So Haworth — who grew up around his father’s wholesale produce company and worked as a manager of a wholesale organic distribution company himself — started growing cannabis, medically, both for his wife and for Oregon’s decades-old medical market. For years, Haworth cultivated cannabis on the side, not able to make enough profits from the medical market to become a full-time cannabis grower. Then, in 2013, Oregon’s medical marijuana market shifted, allowing, for the first time, a legitimate retail component.

And so Haworth put his organic produce job on hold and jumped feet first into cannabis cultivation, moving SoFresh Farms to Canby in 2014. But he didn’t want to completely eschew the decades of knowledge he had gained working in the organic produce industry. And so Haworth decided to do something that not many cannabis farmers were doing at the time: create an organic, sustainable cannabis farm, a place without synthetic pesticides or fertilizers, a place that sequesters carbon and helps repopulate native flora. A place that grows cannabis and leaves the environment better for it.

“It’s not enough to not be bad,” Haworth said. “We want to be good. It’s not enough to not be part of the problem, we want to be part of the solution.”

Read more at: Can Marijuana Ever Be Environmentally Friendly?

Filed under Agriculture/Food System, Climate Change & Energy, Land Use, Sustainable Living, Water

Just how much power do your electronics use when they are ‘Off’?

Tatiana Schlossberg, THE NEW YORK TIMES

Once upon a time, there was a difference between on and off. Now, it’s more complicated: Roughly 50 devices and appliances in the typical American household are always drawing power, even when they appear to be off, estimates Alan Meier, a senior scientist at the Department of Energy’s Berkeley Lab.

It adds up. About a quarter of all residential energy consumption is used on devices in idle power mode, according to a study of Northern California by the Natural Resources Defense Council. That means that devices that are “off” or in standby or sleep mode can use up to the equivalent of 50 large power plants’ worth of electricity and cost more than $19 billion in electricity bills every year. And there’s an environmental cost: Overall electricity production represents about 37 percent of all carbon dioxide emissions in the United States, one of the main contributors to climate change.

In the name of scientific inquiry, I tested about 30 appliances from friends’ houses as well as my own by plugging the devices into a Kill-a-Watt power meter, which can track how much power (in watts) is being drawn at any given moment.

My cable box drew 28 watts when it was on and recording a show, and 26W when it was off and not recording anything. Even if I never watched TV, I would still consume about 227 kilowatt-hours annually. To put it in context, that’s more than the average person uses in an entire year in some developing countries, including Kenya and Cambodia, according to World Bank estimates.

Always leaving a laptop computer plugged in, even when it’s fully charged, can use a similar quantity — 4.5 kilowatt-hours of electricity in a week, or about 235 kilowatt-hours a year. (Your mileage may vary, depending on model and battery. My computer is a few years old and a few readers have written to say their MacBooks use far less power.)

Read more about energy use of home electronics and small kitchen appliances: Just How Much Power Do Your Electronics Use When They Are ‘Off’? – The New York Times

Filed under Climate Change & Energy, Sustainable Living

EPA’s annual U.S. greenhouse gas inventory shows a 3.4% decrease in emissions

Julia P. Valentine, U.S. EPA

The U.S. Environmental Protection Agency (EPA) released its 19th annual report of overall U.S. greenhouse gas (GHG) emissions today, showing a 3.4 percent decrease in 2012 from 2011. The Inventory of U.S. Greenhouse Gas Emissions and Sinks, which is submitted annually to the Secretariat of the United Nations Framework Convention on Climate Change, presents a national-level overview of annual greenhouse gas emissions since 1990.

The major contributors to the decrease in emissions from 2011-2012 were the decrease in energy consumption across all sectors in the U.S. economy, and the decrease in carbon intensity for electricity generation due to fuel switching from coal to natural gas. Other factors included a decrease in transportation sector emissions attributed to an increase in fuel efficiency across different transportation modes and limited new demand for passenger transportation.

Greenhouse gases are the primary driver of climate change, leading to increased heat-related illnesses and deaths; worsening the air pollution that can cause asthma attacks and other respiratory problems; and expanding the ranges of disease-spreading insects. Climate change is also affecting the frequency and intensity of heat waves, droughts, and other extreme weather events.

via 04/15/2014: EPA Publishes 19th Annual U.S. Greenhouse Gas Inventory.

Filed under Climate Change & Energy