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Electric Scooters: Dirty or Green Transportation?

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If you visit a city these days, you are sure to see Lime, Bird, Spin, or Skip electric scooters zipping between traffic and pedestrians or parked in rows near busy restaurants and malls. But these electric scooters might not be as green as you think. Shared electric scooter companies like to boast about their carbon-free credentials but that is not the whole truth. 

The Influx of Electric Scooters Across the U.S.

Love them or hate them, electric scooters seem to be here to stay. Shared or “dockless” — meaning riders don’t have to return them to a charging station after a ride — electric scooters rolled onto U.S. city streets in 2018 and ever since, have been rented millions of times over. 

The National Association of City Transportation Officials revealed that 38.5 million trips were taken on shared electric scooters in 2018, overtaking station-based bicycles as the most popular form of shared micro-mobility transportation in the U.S. in just the first year they were widely available.

The eclipse of the docked bicycles was mainly due to the introduction of a staggering 85,000 electric scooters available for public use in U.S. cities compared with 57,000 station-based bikes.

How Micro-Mobility Is Changing Urban Transport

As electric scooters have become more widely available to the public, a micro-mobility revolution has surfaced: U.S. citizens increasingly opt to travel the “last mile” by alternative over traditional transport methods. 

The changing landscape of urban transportation can be boiled down to two factors. The first is the ubiquity of electric scooters and smartphones. People can easily locate and rent shared electric scooters by using an app. After a small financial transaction conducted through a smartphone app, the renter can ride a scooter for a set period of time. The ability to pay from a smartphone app using a credit card makes the process of using an electric scooter extremely convenient.

The second factor is the dockless appeal of the shared micro-mobility devices. It is easy to see why electric scooters eclipsed the number of docked, station-based bikes in 2018. If a rider rents a docked bike, they need to return it to a docking station. But the dockless electric scooters can be found, ridden, and left almost anywhere. The convenience of hopping on an electric scooter, riding it from A to B, and leaving it wherever you want contributes significantly to the popularity of these shared micro-mobility devices.

Part of the appeal of shared electric scooters? Riders don’t need to return them to a docking station at the end of their ride. Photo: Paulo Almeida on Unsplash

The Recharge Process

Scooters don’t charge themselves. Throughout the day, the scooter service deploys people driving cars or trucks to collect scooters that have run through their electric charge. Batteries must be plugged in, and the maintenance person who picks them up must haul them to a workspace to recharge tired scooters.

Besides the source of power used, moving scooters from where the last rider left them to a recharging center — which may be someone’s home — produces the same CO2 output as the car or truck used. It’s a two-way trip and scooters must be redistributed where riders are likely to find and use them. We can’t calculate the total emissions, but if you are looking for a green ride, seek scooters from companies that document how much mileage and the types of vehicles used to collect and distribute their two-wheeled transportation.

The Invisible Carbon Contributor 

At face value, electric scooters appear to be carbon-free modes of transportation. But what you can’t see may come as a surprise.

Just like all other modes of transportation, electric scooters need fuel. With traditional modes of transportation such as cars, it is easy to see the pollutants being emitted from their tailpipes. But that is not the case with electric scooters. Although electric scooters may not directly emit emissions through tailpipes, they do contribute greenhouse gases once you factor in the energy used to charge the scooters.

The widespread use of electric scooters and the energy needed to keep the wheels rolling has had a direct effect on the environment. Research from Electric Scooter Insider revealed that, once you factor in the CO² that is released as a result of producing and delivering the electricity needed to charge the scooters, 146.21 grams, or about a third of a pound, of CO² is emitted for every mile ridden.

Bloomberg reported that the scooter riders average 1.5 miles per trip. Combining this with the 38.5 million trips, approximately 57.8 million miles were traveled on electric scooters in 2018. In fact, electric scooters contributed 9,308 tons of CO² in 2018, equivalent to the energy use of an average house for 650 years.

However, it’s not all bad. The amount CO² emissions would have been far greater if those 57.8 million miles were traveled using gas-powered cars. Traveling that distance by car instead of electric scooters, the amount of CO² emitted could have been more than double (22,720 tons).

Electric scooters may not be carbon-free but they still contribute 59 percent less CO² compared to the average car in America (356.91 grams of CO² per mile).

Current State of Electricity Generation in the U.S.

In 2018, fossil fuels made up the majority (63.5 percent) of U.S. electricity generation. This played a significant role in the CO² per mile emission factor for electric scooters.

Charging an electric scooter using clean energy sources would substantially reduce its carbon footprint. The current status of renewable energy sources for the U.S. accounts for only 17.1 percent of all electricity generated. The growing popularity of electric scooters is just one more reason the U.S. needs to expand its investment clean, renewable energy.

The electric scooter, if powered by renewable energy, is a win for the environment. It’s up to you to learn about the power sources a scooter service uses.

Conscious Consumerism

How clean electric scooters are is totally dependent on the energy source used to generate the electricity needed to charge them. As such, conscious consumerism will play a significant role in the future of these micro-mobility devices and their impact on the environment. 

As environmentally conscious consumers, we should know the source of our energy. If you don’t know how your electricity is generated, ask your electricity service provider. If your electricity comes from a clean, renewable energy source like wind, solar, or hydropower, you can feel good about riding and charging your electric scooter — or electric car.

About the Author

Josh Frisby is the founder of Electric Scooter Insider, a site that reviews and recommends the best electric scooters. He also conducts extensive research studies into the micro-mobility industry to uncover interesting insights that spark debate and increase the exposure of electric scooters to the general public.

Feature image courtesy of Marek Rucinski from Unsplash

 

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Electric Scooters: Dirty or Green Transportation?

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Video games consume more electricity than 25 power plants can produce

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This story was originally published by Mother Jones and is reproduced here as part of the Climate Desk collaboration.

A few years ago, Evan Mills’ 14-year-old son Nathaniel wanted to get into gaming. To juice up the experience, he wanted to build his own computer like more and more gamers do. Mills is an energy expert, a senior scientist at the Lawrence Berkeley National Laboratory, and a member of the Intergovernmental Panel on Climate Change, so he struck a deal with his son: “I’ll bankroll it if you help me measure the hell out of it and let’s see how much energy this is really going to use.” His son agreed, and they “went at it,” Mills recalls. “We had a power meter and all the tools. And when the results came in — it was jaw dropping.”

“I’m looking at the power ratings, and I’m like, ‘What? This graphics card uses 300 watts? That one uses 500 watts? Is this a typo? This is way out on the fringes.’” In time, the father-and-son team hardly paid attention to the games themselves, instead focusing on their watt meter and switching out hardware and games to see which configurations would make the electricity readings spike or fall.

In 2015, they released a research paper that got picked up by PC Gamer and other outlets, and Mills landed a $1.4 million grant from the California Energy Commission to continue the research. Last week, Mills released another report, titled “Green Gaming: Energy Efficiency without Performance Compromise,” that builds on his years looking into a relatively untouched field of study. Gaming’s “plug load” was long overlooked in part because it fell into the miscellaneous category of non-appliances whose energy consumption was either not understood or assumed to be less significant.

To fill in the blanks, Mills’ research team created a gaming lab with 26 different systems, a host of displays, and all manner of consoles and virtual reality equipment. Over two years, they tested 37 popular games in eight different genres, including Call of Duty: Black OpsSkyrim, and FIFA17. But it was clear early on that gaming’s energy consumption, Mills says, “is not trivial.”

So just how big is gaming’s environmental footprint? Globally, PC gamers use about 75 billion kilowatt hours of electricity a year, equivalent to the output of 25 electric power plants. (And that doesn’t include console games.) In the United States, games consumes $6 billion worth of electricity annually — more power than electric water heaters, cooking appliances, clothes dryers, dishwashers, or freezers. As the report concludes, “video gaming is among the very most intensive uses of electricity in homes.” And more power means more greenhouse gas emissions: American gamers emit about 12 million tons of carbon dioxide annually — the equivalent of about 2.3 million passenger cars. Games are rated for things like sex and violence, Mills points out, but games and gear are “silent on their carbon footprint.”

What’s more, games’ impact could balloon as their market keeps expanding. “This isn’t the domain of 15-year-old boys anymore,” Mills says. “This is something that two-thirds of American households are engaged in. And what does it mean for the population? It’s a lot of energy and a lot of carbon.” Within five years, the electricity demand for gaming in California could rise by 114 percent, according to the report.

Some of gaming’s energy demand is driven by emerging technologies like virtual reality and higher-resolution connected displays. Cloud-based gaming, in which graphics processing is conducted on remote servers, is especially energy intensive, increasing overall electricity use by as much as 60 percent for desktop computers and 300 percent for laptops.

Luckily, it’s not all doom and gloom. “There is the potential to save a lot of energy with very little effort and little to no effect with the quality or experience,” says Jimmy Mai, a computer technician and one of the project’s principal testers. An avid gamer, Mai’s job was to set up the equipment every day and then play the games, diving into some titles he’d always wanted to explore, like League of LegendsWorld of Tanks, and The Witcher III (“a beautiful game,” says Mai, who jokes that this was “sort of a dream project”). Gaming equipment “is constantly being revised, becoming more energy efficient, and becoming more powerful in some cases,” Mai says. Mills notes that by simply changing out the lab’s graphics cards and power supply units, his team could reduce its energy consumption by 30 to 50 percent—with no reduction in the games’ performance.

The researchers found that gaming’s electricity demand could fall by 24 percent in the next five years if gamers shifted toward more efficient equipment and change their playing habits. Mills and his colleagues have created a website that outlines steps gamers can take to save energy. For example, there’s a huge range in how much energy different gaming systems use — anywhere from 5 kWh per year (very little) to 1,200 kWh per year (equivalent to leaving a 60-watt lightbulb on for more than two years straight.) Simply switching to a more efficient power supply unit can realize a 13 percent energy savings. And if that’s not enough incentive, the report shows how saving energy will also save gamers money. The annual electricity bill for a “power-sipping Nintendo Switch” can be as little as $5, while a “high-end desktop system run by an extreme gamer” can run up to $400 or more.

Awareness can have an impact, too, says Mills. Even though this entire project began with his son, its findings turned him off from gaming. “When my son saw the carbon footprint, he did lose his interest,” Mills says. For others, like Mai, who often worked in the gaming lab by day and still fired up his own system at night, giving up on gaming isn’t going to happen. (“Jimmy is going to go out in a wooden box gaming,” Mills says.) We’ll just have to find a way to enlist them in the massive multiplayer quest to save the planet.

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Video games consume more electricity than 25 power plants can produce

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MIT just had a nuclear fusion breakthrough.

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MIT just had a nuclear fusion breakthrough.

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Puerto Rico could see ‘significant epidemics,’ health experts warn.

A new report from the International Energy Agency surveys the growth of hydropower, wind, and other forms of renewable energy and finds they’re catching up to coal (still the world’s largest source of electricity). At this rate, renewables are expected to provide 30 percent of power generation by 2022.

Hydropower provides the most renewable energy, but the growth is in solar. One wrinkle, though: It can be misleading to focus on the number of panels installed, because solar only works when, ya know, the sun shines. So keep in mind that, while the graph below shows how much new “capacity” we are adding to the system, only a portion of that gets turned into electricity.

IEA

Denmark is leading the way on clean energy installations (shocking, I know). The Scandinavian country currently generates 44 percent of its electricity from wind and solar, and by 2022 it’s on track to get 77 percent from the same sources. (VRE, used in the graf below, stands for “variable renewable energy” — the term of art for wind and solar plants that we can’t switch on as needed.)

IEA

If renewables keep growing as forecast, we’re going to need bigger electrical grids (to move electricity from places where it’s generated in excess to places where it’s needed) and better ways to store energy.

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Puerto Rico could see ‘significant epidemics,’ health experts warn.

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The Spark of Life: Electricity in the Human Body – Frances Ashcroft

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The Spark of Life: Electricity in the Human Body

Frances Ashcroft

Genre: Life Sciences

Price: $1.99

Publish Date: September 24, 2012

Publisher: W. W. Norton & Company

Seller: W. W. Norton


"This is a wonderful book. Frances Ashcroft has a rare gift for making difficult subjects accessible and fascinating." —Bill Bryson, author of At Home: A Short History of Private Life What happens during a heart attack? Can someone really die of fright? What is death, anyway? How does electroshock treatment affect the brain? What is consciousness? The answers to these questions lie in the electrical signals constantly traveling through our bodies, driving our thoughts, our movements, and even the beating of our hearts. The history of how scientists discovered the role of electricity in the human body is a colorful one, filled with extraordinary personalities, fierce debates, and brilliant experiments. Moreover, present-day research on electricity and ion channels has created one of the most exciting fields in science, shedding light on conditions ranging from diabetes and allergies to cystic fibrosis, migraines, and male infertility. With inimitable wit and a clear, fresh voice, award-winning researcher Frances Ashcroft weaves together compelling real-life stories with the latest scientific findings, giving us a spectacular account of the body electric.

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The Spark of Life: Electricity in the Human Body – Frances Ashcroft

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1.5 million Puerto Ricans don’t have safe drinking water.

The federal lawsuit, filed this week by the environmental group Deep Green Resistance, seeks to protect the Colorado River — a water source for Los Angeles, Phoenix, Denver, and Las Vegas, among other desert-strewn metro areas.

The New York Times reports that the state of Colorado has been sued for failing to protect the river and its “right to flourish” by allowing pollution and general degradation. The plaintiff’s attorney — the plaintiff being the Colorado River — is Jason Flores-Williams, who told the New York Times that there is a fundamental disparity in rights of “entities that are using nature and nature itself.”

Those entities are primarily corporations, which have been granted human rights in major Supreme Court decisions over the past year. In the Citizens United and Hobby Lobby decisions, for example, the Supreme Court found that corporations should be afforded the human right to donate without limit to political campaigns and to refuse to comply with federal law on basis of religious freedom.

The main challenge for the river case is that a corporation is, by definition, a group of people — but hey, it’s worth a shot! Here’s a short video we made on why protecting waterways like the Colorado River is important, even for city-dwellers:

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1.5 million Puerto Ricans don’t have safe drinking water.

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The U.K. is banning sales of diesel and gas cars by 2040.

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The U.K. is banning sales of diesel and gas cars by 2040.

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Tesla has a big new competitor vying to build the batteries of the future.

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Tesla has a big new competitor vying to build the batteries of the future.

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Solar power’s not just for roofs anymore: It’s being woven into fabric.

Soon, everything from sneakers to beach umbrellas could suck up the sun’s energy and turn it into electricity.

Marianne Fairbanks, a fabric designer, and Trisha Andrew, an organic chemistry professor at the University of Massachusetts-Amherst, teamed up to make solar fabric — first invented 15 years ago — a little bit sleeker. They created a layer of polymer-coated fabric that absorbs light and conducts electricity, and can be applied to any type of textile. A four-by-four foot swath of cloth can generate enough power to charge a smartphone.

“I get really excited, because textiles are portable and lightweight,” Fairbanks told Smithsonian. “They could be deployed in the wilderness for a hunter or in the field for medical or military applications in a way that big clunky solar panels never could be.” The duo is working on creating marketable solar-powered products like gloves, tents, and other outdoor gear.

Meanwhile, researchers at Georgia Institute of Technology recently developed a different wool textile that harvests wind and solar energy. Who knew the renewable energy fabric industry was so competitive?

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Solar power’s not just for roofs anymore: It’s being woven into fabric.

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How to smash solar power records: Harness a heat wave

Beat the Heat

How to smash solar power records: Harness a heat wave

By on Jul 25, 2016 3:24 pmShare

California just crushed a solar energy record — thanks to the heat wave currently smothering the state.

At 1:06pm on July 12 — as the Golden State was burning in temps hitting the high 90s — its solar power plants generated an unheard-of 8,030 megawatts of electricity, according to the California Independent System Operator.

That’s enough to power 6 million homes, SFGate reports. Just two years ago, the statewide system could produce only half that amount of electricity. These record-breaking numbers don’t even take into account the 500,000-plus solar arrays installed on California’s private homes and offices, which can produce an estimated 4,000 megawatts of electricity altogether.

On July 12, renewable energy met almost 29 percent of electricity demand when it peaked at 5:54pm. That’s good news for the state’s goal of sourcing 33 percent of its power from renewables by 2020.

When life gives you heat domes, make megawatts of renewable energy, as they say.

Election Guide ★ 2016Making America Green AgainOur experts weigh in on the real issues at stake in this electionGet Grist in your inbox

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How to smash solar power records: Harness a heat wave

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