The Contradictions of Battery Operated Vehicles | Graham Conway | TEDxSanAntonio

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2 жыл бұрын

NOTE FROM TED: This talk only reflects the speaker's personal views and interpretation. Several claims in this talk lack scientific support. We've flagged this talk because it falls outside the content guidelines TED gives TEDx organizers. TEDx events are independently organized by volunteers. The guidelines we give TEDx organizers are described in more detail here:

This talk will challenge the popular perception that Battery Electric Vehicles (BEVs) are environmentally friendly, and will argue that we are inappropriately rushing the market introduction of these vehicles. BEVs are commonly sold under the guise of being ‘Zero Emissions,’ an assertion that is not true by any definition. Brake pads produce emissions, as do
tires and even interiors under sunlight. The electricity that powers BEVs is generated by power plants, 64% of which burn fossil fuels in the U.S.-fossil fuels that contribute to greenhouse gas emissions and global warming. Even more importantly, there are significant CO2 emissions
created during the manufacture of the battery pack, meaning that in order to offset the carbon created during the production process, a BEV must drive 40,000 - 100,000 miles before being environmentally comparable to a gasoline-powered vehicle. Hybrid vehicles, on the other hand,
which combine much smaller batteries with efficient internal combustion engines, have been shown to be a much better option for lowering global CO2. Unfortunately, they do not receive the same marketable ‘kudos’ or policy backing as full BEVs. We are headed down the wrong path by
rolling out BEVs before making the manufacturing and electricity generation CO2 neutral. Dr. Graham Conway is a Principal Engineer in the Automotive Division at Southwest Research Institute. For the last ten years he has been immersed in evaluating automotive technologies and consulting for car companies and suppliers. This gives him unique insights and perspectives on the industry. He is passionate about making vehicles more efficient to ensure the future of the planet and has a message to share about some common misconceptions about electric and non-electric vehicles. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at

Пікірлер: 19 844
Jason D
Jason D
It takes a lot of energy to produce these vehicles, so hold onto your vehicles longer, your clothes, phones etc longer. However, big companies don’t want this to happen.
trung nguyen
trung nguyen 9 сағат бұрын
It’s fine to add the emissions at the power generation plant But if you’re going to do that you have to add the carbon footprint for producing gas which significantly increases the CO2 emissions of a car. At 180,000 miles that adds 60,000 times to the gas cars see how to emissions that are not accounted for in this discussion
johnnylance 14 сағат бұрын
Anyone who has thought about this subject realizes that we need better batteries, and electricity generated by the sun (etc.), to make electric vehicles work. He has told us nothing new. We need to redirect fossil fuel industry subsides (and more) into doing the necessary development... new generation batteries, new solar plants and new electric vehicles can be produced concurrently. We don't have to wait. We do have to have the will...
Andrew Earle
Andrew Earle 14 күн бұрын
This reinforces my belief around the importance of buying less, but when we do buy, buying the most durable/quality products on the market and then taking care of them for maximum life.
Sloreo 28 күн бұрын
As a Corvette owner, I am glad to learn it is as eco friendly as a horse.
corrion1 14 күн бұрын
If they really cared about the environment they would legislate a minimum of at least 10years durability on all consumer products
Damian DeLapp
Damian DeLapp
He’s right about 90% of it, but in reality we need highly efficient reactors.
Pooter Bilbo
Pooter Bilbo Күн бұрын
There are some significant errors in this video but it gets across an important point: how the true emissions of a product occur over its entire life. In engineering it is called life cycle analysis and is divided into three phases:
David Ladd
David Ladd 14 күн бұрын
I suspect every figure mentioned (got your attention?), but I applaud the presentation. When this audience (us) has assimilated this information, they will be able to at least challenge others. Awareness of the complexity of the equation is a step in the right direction. Battery technology, materials acquisition, and manufacturing efficiency are all in flux, on the steep part of the learning curve. The same can be said for solar cells (an non-PV solar). I would like to see more information on thermal issues, such as comparing incident solar radiation absorbed/reflected off into space, on various bare soils, or crops VS. absorbed/reflected off into space by solar farms. PV solar cells absorb a lot of heat that is not reflected and is not converted into electricity. It might turn out that some crops are so good at absorbing CO2 and solar radiation they they could provide more benefit per acre/hectare, as a PV farm. We won’t know until we know, you know? Keep digging!
Gianfranco Benetti-Longhini
Gianfranco Benetti-Longhini 28 күн бұрын
Something different to make us think rather than just accept.
James Powell
James Powell 28 күн бұрын
We need to be developing and building 4th generation nuclear power plants. Eventually, the technologies for renewable energy will be the future but right now we need to get away from burning carbon based fuels as quickly as possible.
Mauricio Medina
Mauricio Medina Күн бұрын
Great talk and info. It's important to keep in mind that we (the global community) are currently spending millions on battery tech research. Every day we get closer to a better for the environment and cheaper to produce battery.
Eric G
Eric G
Please do an expanded version of this talking about the batteries, what it take to produce them, there life span, and what happens to them when they have reached the end of their efficient life span.
References please. Especially for the CO2 requirements for vehicle and Battery Pack construction.
Scott Fet
Scott Fet 19 сағат бұрын
Very enjoyable talk. I would like to know when comparing then two vehicles you didn’t include the energy/CO2 produced from the gas that was needed to propel the gas powered vehicles into your calculations? Thanks again.
Liraco 14 күн бұрын
Love that this had to be "fact checked". Wonder what an updated talk would look like in numbers.
Jim Vonn
Jim Vonn 14 күн бұрын
Hey Jason; big companies used to like to make cars that last a long time; I had a 1971 Porsche 911T with 1 million + miles I gave to my nephew; finally needs a rebuild; I still have a 1961 Volvo P1800 and Opel Gt all are over 50 years old. People ought to want to have solid vehicles that last; and you could still ride share and save real CO2 rather than talk about it.
Erth Mann
Erth Mann 21 күн бұрын
Our energy source will always be chosen by politicians instead of engineers. This will always result in a very few people seeing large benefit while most others pay the price. Don't think so? Research corn produced ethanol, the massive energy it takes to produce, its required use, and the people that benefit from this.
Joe Knows
Joe Knows
This video reminds me of something similar: recycling. Recycling was designed to make people feel better about over consuming products. The recycled materials are sometimes shipped long distances creating a penalty. Similar marketing strategy to sell a product that makes people feel good.
MrPjn86 14 күн бұрын
Love how he talks about the production or Co2 for electric production and where the electricity comes from but forgets that fuel comes from magical pumps on each corner not just the Co2 from the tailpipe. As he said have to look outside the box, so look outside the box and include the production of fuel. This negates his whole argument.
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