W15 Science English Presentation "If you were successful, what organization would you support or donate to?"

I’ll explain the organization I would like to donate to.
.
The organization is Japan Wind Power Association
The Japan Wind Power Association (JWPA) is an organization focused on advancing the wind power industry in Japan. It plays a pivotal role in promoting the development, implementation, and advocacy of wind energy projects.

As you all know, offshore wind turbines are being built off the coast of Akita Prefecture. The JWPA is providing financial and technical support for this construction.

Why I want to support wind power . It's all about global warming, which is getting more serious every year. Global warming has been alarmed for years, but instead of getting better, it is getting worse.

I have a question for you ...
Do you think global warming is being adequately addressed?

MY answer is NO.
Strongly NO…

We must consider and implement truly effective countermeasures. Now, what I want to talk about is the topic of EVs. What image do you have of EVs? I think the image is that they are good for the environment and that they contribute to carbon neutrality.

However, today, the idea that EVs are good for the environment is almost a lia.
I’ll prove this topic with comparative calculations of CO2 emissions.

Please see this data. This is how world generated electricity in 2022, compiled by the IEA. The orange letters indicate the methods that emit CO2 during power generation.
It can be seen that approximately 65% ​​of electricity worldwide is produced by emitting CO2.
Let’s consider the case of coal which has the largest percentage.

I’ll calculation using the Nissan Leaf that is a representative commercial EVs in Japan.
The battery capacity of the car is 60kWh and the maximum range per charge is 400 km.

The CO2 emitted when burning coal to generate 1 kWh of electricity is 0.867 kg.
CO2 generated to fully charge a Nissan LEAF is can be calculated as follows.
For every kilometer Nissan LEAF travels, 0.1314 kg of CO2 is emitted.

Next, perform the same calculation for gasoline cars.
A similar calculation with a fuel-efficient TOYOTA PRIUS shows that the PRIUS has a fuel consumption of 40.8 km and emits 0.08062 kg of CO2 per km driven.

This is a comparison of the amount of CO2 emitted per kilometre driven by EVs and gasoline cars.
Under these conditions, we can see EVs emit about 1.8 times more CO2 than gasoline cars and according to multiple studies it has been revealed that the CO2 emissions during the manufacturing of EVs are 2 to2.5 times higher than those of gasoline cars.

In addition, did you know the fact of EVs cause more damage to tires than gasoline cars?
According to CBS NEWS, EVs require tire replacement every 8,000 to 10,000 miles, which is about one-fourth to one-fifth of gasoline cars because EVs is very heavy. According to CBS NEWS, compared to gasoline cars, EVs are generally 227 to 363 kg heavier. When compared to SUVs or Trucks, the weight difference can be even more substantial, with EVs being over 1,000kg heavier.

So, I want to say “Which is better for the environment, EVs or gasoline cars?”
This is an extreme example( all data listed are theoretical values), but it is based on fact data.

What I most want to say to you is EVs will be meaningless unless the method of power generation is changed. As verified, the widespread use of EVs while burning fossil fuels to generate thermal power is, as a result, worse for the environment than gasoline cars.

So let’s donate to the spread of renewable energy and reconsider measures to address environmental issues!!!!!

Thank you for your listening!