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Electric Cars Indirectly Emit Much Less Carbon Than Previously Reported
https://insideevs.com/news/441944/electric-cars-emit-much-less-carbon/amp/
In other words, electric cars would indirectly emit much less carbon and other gases than previous studies based on six main mistakes they made.
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1) The first one is an exaggeration in estimating the amount of carbon released in battery production. According to the Dutch researchers, the most accepted references to it (Buchal, Karl and Sinn, ADAC, ÖAMTC, and Joanneum Research) assume the process emits 175 kg of CO2 per kWh of battery.
All of them are based on a Romare and Dahllöf study from 2017. In 2019, that study was updated and lowered its estimate of carbon dioxide emitted in battery manufacturing from 175 kg/kWh to 87 kg/kWh. That alone reduced GHG emissions in half.
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2) The second mistake in establishing EVs’ carbon footprint is an underestimation of battery packs’ lives. The same studies we mentioned before believe EVs have an average lifespan of 150,000 km (93,200 mi).
We have already spoken about million-mile batteries from SVolt and CATL that will soon be in production EVs. Even before that, the Dutch report estimates the current electric car life in 250,000 km. And it will improve quickly.
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3) The third mistake is assuming that the power grid will always be as dirty as when each EV hit the road for the first time. The truth is that it is getting cleaner. By coincidence, BloombergNEF published on September 1 that solar and wind represented 67 percent of all new power capacity added in the world in 2019. Fossil fuel sources of energy for electricity shrunk 25 percent. Remember that we are talking about a single year.
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4) What they say is that NEDC was a standard that allowed Dieselgate to happen and which is still the standard adopted by studies that criticize electric cars. WLTP would bring the hope of less biased tests.
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5) The fifth error they point out makes perfect sense. If people calculate how much carbon dioxide battery manufacturing emits, why not calculate how much is of it is generated when breaking oil down into its derivatives?
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6) Finally, they argue that insisting on combustion engines is a mistake because they cannot improve much further. Even if we discover a revolutionary synthetic renewable fuel, they will not get much more energy efficient. A fair amount of it will be lost, while electric cars are efficient by nature. Any serious study on EV indirect emissions would have to consider that.