No, EVs Aren’t Going To Overload Electric Grids
A few weeks ago, right-wing media site NewsMax ran a piece centered around an out-of-context Elon Musk quote. “If we shift all transport to electric than electricity demand approximately doubles … this is going to create a lot of challenges with the grid,” NewsMax quoted Musk as saying, before going on to scare readers about electric vehicles.
In response, I saw a great number of right-wing commentators and their idiotic fans parrot the quote and then further exaggerate it. They even mixed in recent lies by Greg Abbott, telling us that we are already getting screwed by unreliable renewables, and that EVs are only going to make the problem worse. In other words, EVs are going to kill people! Elon Musk said so!
There’s just one problem: basically none of this is true. In this article, I’m going to give readers the lowdown on the grid situation and give you some factual arguments you can use the next time people start sharing that kind of alarmist nonsense.
Point #1: EVs Use Far Less Energy Than Gas & Diesel Vehicles
When people with an axe to grind against EVs tell us about how bad EVs are, they tend to act like they’ll need just as much energy as gas-powered cars do, but in the form of electricity. They act like you’re basically stuffing coal into the “gas tank” of an EV, so you know that it must be worse.
In reality, EVs only use ¼ to ⅓ the energy of a comparable gas-powered vehicle. Why? Because most of the energy of fossil fuels ends up as heat. Gas and diesel vehicles need a big radiator and water pump to get rid of a lot of heat when the fuel is burned. More heat escapes right out the side of the engine block. Even more heat comes out of the vehicle’s exhaust pipe. There’s such an abundance of waste heat, that automakers use some of it to heat the vehicle’s interior in the winter via the heater core.
By the time all is said and done, about ¾ of a gas car’s fuel and ⅔ of a diesel car’s fuel ends up as waste heat that the car needs to shed somehow. The rest of the energy then goes on to be wasted by crappy aerodynamic efficiency, complex drivetrains, and friction braking. Very little ends up actually pushing the vehicle forward.
Let’s talk about brakes for a second. The Law of Conservation of Energy tells us that energy can’t be destroyed. It can only be converted to different forms. All of the energy of a moving vehicle (thousands of pounds of steel, glass, plastic, and rubber) has to go somewhere when you press the brake pedal. Brakes end up turning that kinetic energy into heat.
EVs have a big advantage here. Not only is about 10% of energy lost as waste heat, but when you use the brakes on a Tesla or a Chevy Bolt, the vehicle’s motor gets used as a generator to slow the car down while actually generating electricity instead of waste heat. This is called regenerative braking.
All in all, around 90% of an EV’s energy actually gets used to move the vehicle instead of getting turned into useless and problematic heat. So, no, changing a gas car out for an EV doesn’t mean that the equivalent energy must come from a power plant. Far less overall energy is needed.
Point #2: Load Timing & Variable Grid Demand
Looking at the power grid and the total power produced in simple terms (example: “We’ll need twice as much”) isn’t informative, because the amount of power that the grid delivers to homes and businesses varies hourly. In Phoenix, the electric grid is taxed to the max in the late afternoon, when things are the hottest outside. Everybody and their dogs are running refrigerated air conditioners, and that all adds up to a lot of power.
Fast forward to midnight. The sun set hours ago, and the desert rapidly cools off up to 40 degrees. During the summer, people still need air conditioning, but the compressors (the part that uses the most electricity) only run periodically to keep houses cool. With all of the power demand cut in half, or less, some power plants are set to produce less power and other plants are turned off entirely.
The grid’s wiring has to be built for the maximum power needed, though. You can’t take the average power used in a day and put in wires that can only handle that much power (assuming you don’t want a fire). You have to take the power needs of the grid at their highest peaks on the worst days of the year and design for that, even though you won’t need those beefy wires the rest of the time.
So, in reality, the grid has tons of spare capacity most of the time. In the middle of the night when power is needed the least, grids are often only transmitting half of the power they are capable of sending, or less.
The Arizona example doesn’t apply everywhere, as some places that actually have a winter use a lot of electric power at night for heating. Other places often have a glut of excess solar power during the day that they don’t know what to do with. Sometimes they even have to pay people to take the power.
Fortunately, EVs can charge during off-peak times when there’s extra power capacity. Utilities often offer customers with an EV excellent prices to charge during those off-peak hours, so they set the EV to charge during those times instead of when everyone is competing for power.
Point #3: EV Efficiency Continues To Improve
Finally, it’s worth noting that EVs are getting more efficient. They were already far more efficient than gas-powered vehicles to begin with, but today’s EVs tend to use even less power than the EVs made ten years ago. Improved drivetrains, better aerodynamic efficiency, better battery technology, and even the use of on-board solar panels are all reducing the power needs of EVs.
Vehicles like the Aptera and Sono Sion are even going to be able to operate almost completely independent of the grid, because they’ll produce enough solar power that they just don’t need to be plugged in most days.
When we keep all of this in mind (EVs are more efficient, they can charge when the grid has the most spare capacity, and they’re getting more efficient over time), there’s really no reason to fear EVs overloading grids unless you’re looking for something to dishonestly smear the EV industry with.
Featured image by Aptera.
Appreciate CleanTechnica’s originality? Consider becoming a CleanTechnica Member, Supporter, Technician, or Ambassador — or a patron on Patreon.
Mining company Vale is turning to Caterpillar to provide this massive, 240-ton battery-electric haul truck in a bid to slash carbon emissions at its mines by 2030.
Caterpillar and Vale have signed an agreement that will see the Brazilian mining company test severe-duty battery electric mining trucks like the 793 BEV (above), as well as V2G/V2x energy transfer systems and alcohol-powered trucks. The test will help Vale make better equipment choices as it works to achieve its goals of reducing direct and indirect carbon emissions 33% by 2030 and eliminating 100% of its net emissions by 2050.
If that sounds weird, consider that most cars and trucks in Brazil run on either pure ethyl alcohol/ethanol (E100) or “gasohol” (E25).
“We are developing a portfolio of options to decarbonize Vale’s operations, including electrification and the use of alternative fuels in the mines. The most viable solutions will be adopted,” explains Ludmila Nascimento, energy and decarbonization director Vale. “We believe that ethanol has great potential to contribute to the 2030 target because it is a fuel that has already been adopted on a large scale in Brazil, with an established supply network, and which requires an active partnership with manufacturers. We stand together to support them in this goal.”
Vale will test a 240-ton Cat 793 battery-electric haul truck at its operations in Minas Gerais, and put energy transfer solutions to a similar tests at Vale’s operations in Pará over the next two-three years. Caterpillar and Vale have also agreed to a joint study on the viability of a dual-fuel (ethanol/diesel) solution for existing ICE-powered assets.
Vale claims to be the world’s largest producer of iron ore and nickel, and says it’s committed to an investment of between $4 billion to $6 billion to meet its 2030 goal.
Cat 793 electric haul truck
During its debut in 2022, the Cat 793 haul truck was shown on a 4.3-mile test course at the company’s Tucson proving grounds. There, the 240-ton truck was able to achieve a top speed of over 37 mph (60 km/h) fully loaded. Further tests involved the loaded truck climbing a 10% grade for a full kilometer miles at 7.5 mph before unloading and turning around for the descent, using regenerative braking to put energy back into the battery on the way down.
Despite not giving out detailed specs, Caterpillar reps reported that the 793 still had enough charge in its batteries for to complete more testing cycles.
Electrek’s Take
Electric equipment and mining to together like peanut butter and jelly. In confined spaces, the carbon emissions and ear-splitting noise of conventional mining equipment can create dangerous circumstances for miners and operators, and that can lead to injury or long-term disability that’s just going to exacerbate a mining operation’s ability to keep people working and minerals coming out of the ground.
By working with companies like Vale to prove that forward-looking electric equipment can do the job as well as well as (if not better than) their internal combustion counterparts, Caterpillar will go a long way towards converting the ICE faithful.
SOURCES | IMAGES: Caterpillar, Construction Equipment, and E&MJ.
FTC: We use income earning auto affiliate links. More.
American mine; via NPROXX
Argonne National Laboratory is building a new research and development facility to independently test large-scale hydrogen fuel cell systems for heavy-duty and off-road applications with funding from the US Department of Energy.
The US Department of Energy (DOE) is hoping Argonne Nat’l Lab’s extensive fuel cell research experience, which dates back to 1996, will give it unique insights as it evaluates new polymer electrolyte membrane (PEM) fuel cell systems ranging from 150 to 600 kilowatts for use in industrial vehicle and stationary power generation applications.
The new Argonne test facility will help prove (or, it should be said, disprove) the validity of hydrogen as a viable fuel for transportation applications including heavy trucks, railroad locomotives, marine vessels, and heavy machines used in the agriculture, construction, and mining industries.
“The facility will serve as a national resource for analysis and testing of heavy-duty fuel cell systems for developers, technology integrators and end-users in heavy-duty transportation applications including [OTR] trucks, railroad locomotives, marine vessels, aircraft and vehicles used in the agriculture, construction and mining industries,” explains Ted Krause, laboratory relationship manager for Argonne’s hydrogen and fuel cell programs. “The testing infrastructure will help advance fuel cell performance and pave the way toward integrating the technology into all of these transportation applications.”
The Hydrogen and Fuel Cell Technologies Office (HFTO) of DOE’s Office of Energy Efficiency and Renewable Energy is dedicating about $4 million to help build the new Argonne facility, which is set to come online next fall.
Electrek’s Take
It’s going to be hard to convince me that the concentrated push for a technology as inefficient as hydrogen fuel cells has more to do with any real consumer or climate benefit than it does keeping the throngs of people it will take to manufacture, capture, transport, store, house, and effectively dispense hydrogen gainfully employed through the next election cycle.
As such, while case studies like the hydrogen combustion-powered heavy trucks that have been trialed at Anglo American’s Mogalakwena mine since 2021 (at top) and fuel cell-powered concepts like Komatsu’s medium-sized excavator (above) have proven that hydrogen as a fuel can definitely work on a job site level while producing far fewer harmful emissions than diesel, I think swappable batteries like the ones being shown off by Moog Construction and Firstgreen have a far brighter future.
Speaking of Moog, we talked to some of the engineers being their ZQuip modular battery systems on a HEP-isode of The Heavy Equipment Podcast a few months back. I’ve included it, below, in case that’s something you’d like to check out.
SOURCES | IMAGES: ANL, Komatsu, and NPROXX.
FTC: We use income earning auto affiliate links. More.
Velocity truck rental is doing its part to help commercial fleets electrify by energizing 47 high-powered charging stations at four strategic dealer locations across Southern California. And they’re doing it now.
The new Velocity Truck Rental & Leasing (VTRL) charging network isn’t some far-off goal being announced for PR purposes. The company says its new chargers are already in the ground, and set to be fully online and energized by the end of this month at at VTRL facilities in Rancho Dominguez (17), Fontana (14), the City of Industry (14), and San Diego (2).
45 120 kW Detroit e-Fill chargers make up the bulk of VTRL’s infrastructure project, while two DCFC stations from ChargePoint get them to 47. All of the chargers, however, where chosen specifically to cater to the needs of medium and heavy-duty battery electric work trucks.
The company says it chose the Detroit e-Fill commercial-grade chargers because they’ve already proven themselves in Daimler-heavy fleets with their ability to bring Class 8 Freightliner eCascadias, Class 6 and 7 Freightliner eM2 box trucks, and RIZON Class 4 and 5 cabover trucks, “to 80% state of charge in just 90 minutes or less.”
At Velocity, we are not just reacting to the shift towards electric mobility; we are at the forefront with our customers and actively shaping it. By integrating high-powered, commercial-grade charging solutions along key transit corridors, we are ensuring that our customers have the support they need today. This charging infrastructure investment is a testament to our commitment to helping our customers transition smoothly to electromobility solutions and to prepare for compliance with the Advanced Clean Fleets (ACF) regulations.
David Deon, velocity president
Velocity plans to offer flexible charging options to accommodate the needs of different fleets, including both managed, “charging as a service” subscription plans and self-managed/opportunity charging during daily routes. While trucks are charging, drivers and operators will be able to relax in comfortable break rooms equipped with WIFI, television, snacks, water, and restrooms.
Electrek’s Take
While it feels a bit underwhelming to write about trucking companies simply following the letter of the law in California, the rollout of an all-electric, zero-emission commercial trucking fleet remains something that, I think, should be celebrated.
As such, I’m celebrating it. I hope you are, too.
SOURCE | IMAGES: Global Newswire; Daimler Trucks.
FTC: We use income earning auto affiliate links. More.
-
Sports2 years ago‘Storybook stuff’: Inside the night Bryce Harper sent the Phillies to the World Series
-
Sports1 year agoMLB Rank 2023: Ranking baseball’s top 100 players
-
Environment12 months agoJapan and South Korea have a lot at stake in a free and open South China Sea
-
Sports1 month agoStory injured on diving stop, exits Red Sox game
-
Sports7 months agoGame 1 of WS least-watched in recorded history
-
Sports3 years ago
Team Europe easily wins 4th straight Laver Cup
-
Environment1 year agoGame-changing Lectric XPedition launched as affordable electric cargo bike
-
Environment1 year agoTesla advances Powerwall pilot project with German electric company