Are Electric Cars REALLY so Green? The Full Picture Gas vs Electric!

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SOURCES
Detailed Paper on EV emissions: https://tinyurl.com/yyad2dxn
Nature paper on EV worldwide: https://tinyurl.com/2qch9kld
Gas emissions by powertrain: https://tinyurl.com/2qtduxos
CO2 in transport sector: https://tinyurl.com/2nz786h7
MIT paper on mobility: https://tinyurl.com/2exa8zt7
Calculate how green is your EV: https://tinyurl.com/2manz6y6
EV myths from EPA: https://tinyurl.com/yepxtavf
Transport sector CO2: https://tinyurl.com/2fjdet3p
Global CO2 emissions data: https://tinyurl.com/2zxnqfy3
Battery manufacturing CO2: https://tinyurl.com/y9lnczzr
Life of EV batteries: https://tinyurl.com/2zh3yahk
Article on dead EV batteries: https://tinyurl.com/yfvfyvhu
CO2 impact by fuel type: https://tinyurl.com/y6eoe98u
Electricity maps: https://tinyurl.com/2me78r6z
Electricity mix date: https://tinyurl.com/ye22lbwg
Global greenhouse study: https://tinyurl.com/2cajqmv6

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CHAPTERS
0:00 Factors to consider
2:04 CO2 source and EV stats
4:25 Inefficiency of Internal combustion engines
5:25 How much gas cars pollute vs EVs?
6:36 Accounting for CO2 produced in manufacturing
8:00 How long EVs need to be driven to be greener
10:42 Personal vehicles are a small percentage of overall CO2
12:44 The issue of batter recyclability
14:21 Overall picture

SUMMARY
Electric vehicles are not necessarily greener because they create no emissions. We have to take a look at the bigger picture. Source of electricity, depending on the fuel, can produce greenhouse gases. Manufacturing the components of the car, such as batteries also makes CO2. We review CO2 produced by EVs compared to gasoline cars throughout their lifetime.

EVs are about 9% of all new cars sold yearly, and only 1.4% of all cars on the road. The main issue is carbon dioxide emissions from petrol or gasoline cars which causes climate change.

The common internal combustion gasoline engine is inefficient. Only 20-35% of the energy produced from burning the fuel ends up turning the wheels. But in electrical vehicles, about 75-85% of electrical energy is used to propel the vehicle.

How much do gasoline cars pollute? On average worldwide, a gasoline engine car produces 202 grams of CO2 per km driven. When taking into account the CO2 produced from the electricity generated needed to charge the EV battery, they produce 83 gCO2 per kilometer driven - a difference of 119 gr if CO2 in favor of electric vehicles.

But we have to take into account the CO2 generated during the manufacturing process of electric vehicles. Manufacturing a typical gasoline car releases 7 tons of CO2, whereas manufacturing a similar sized electric car releases 10 tons. So EVs produce 3 tons more CO2 in the manufacturing process.

So, EVs are not greener compared to gasoline-powered cars from day one, when considering that they have a substantially larger carbon footprint immediately after they are manufactured. So we have to consider how long, or how many kilometers they would need to be driven in order to make up for the higher CO2 generated during their production.

The math shows that an EV breaks even after it has been driven 25,210 km. But experts estimate that the average EV battery will last at least 200,000 km. So over the life of the vehicle, in most countries, an EV will be greener.

There are 5 countries where on average EVs will not be greener even over their lifetime - India, Estonia, Poland, Czechia and Bulgaria.
#electriccars
But overall cars only only account for 8-12% of overall greenhouse gas emissions. The most significant contributor to global greenhouse gases, 40%, comes from Electricity and heat production. So finding more eco-friendly ways to produce electricity will have a greater impact on CO2 levels than EVs.

In carbon dioxide numbers, you will create about 19 tons of CO2 over the lifetime of an EV, but more than 55 tons of CO2 for a gasoline car over its lifetime.

Here is an overall summary
• Over the lifetime of a car, an electric vehicles are greener in most countries of the world.
• EVs would not be a greener alternative in India, Estonia, Poland, Czechia and Bulgaria.
• Electric cars batteries may harm the environment unless we can recycle their batteries
• Raw material supplies may be limited which may have a geopolitical impact
Catégories
Cours de Batterie & Percussions
Mots-clés
electric cars, electric car, climate change

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