The average electric vehicle uses 0.32 KWhs of electricity to go a mile. Since the average residential for power is $0.17/KWh, that’s $0.06 per mile.
This compares favorably to gasoline, whose average use per mile is 0.04 gallons at an average cost of $3.64, or $0.15.
Over the lifetime of a car, say 200K miles, we’re talking about $18,000.
Now, there are other pros and cons at stake here. Replacement batteries for EVs are expensive, but the savings in terms of entire systems that are eliminated in EVs (fuel delivery, engine parts, pollution control, exhaust, etc.) are considerable as well.
Of course, the major motivation behind EV purchases is environmental responsibility. Studies have consistently shown that phasing out internal combustion engines and the consumption of fossil fuels is essential to the decarbonization of the energy and transportation sectors, and thus to the success of our society’s efforts to mitigate climate change.
My doctor, who knows that I understand physics and renewable energy in particular, asked me today what I thought about wind turbines on boats.
I explained that, since boats need their own ways to generate electricity, what is called “small wind” may make sense. Most ships have diesel-powered generators, and that’s an option for smaller craft as well, and solar is not an attractive option because of the small area.
Doctors generally don’t have time to kill, but he asked me further about small wind, to which I explained:
Because the area of a circle is proportional to the square of the radius, big is better. If you can build a turbine with a radius 100 times larger than a small one, you’re going to generate 10,000 time more power.
Because the power generated by a turbine is proportional to the cube of the wind’s velocity, if you can site a turbine in wind conditions that are 10 times those on your rooftop, with trees and other buildings slowing the wind down, you’re going to generate 1000 times more power.
So, as usual, the answer resides in physics and math. 1000 times 10,000 is 10 million, which is why we see huge turbines on structures that lift huge turbines high above the ground, and it’s why the small wind industry has essentially disappeared.
If you don’t understand elementary school math and high school science, and you have money to burn, the investment offered at left may be right for you.
It’s interesting that there is no Fox News (or equivalent) in Canada.
The Canadians have protections of free speech that are very similar to ours in the States, and, like the U.S., these rights are not absolute. One difference is that Canada prohibits gross misrepresentation, which, in this case means that presenting opinions and calling it “news” is against the law. Lies are fine; calling them “news” is not.
A possible name for a show with the same content might be “Conservative Viewpoints” or “The Way the Right Wing Sees the World.”
Where Canada protects its people from malicious bullshit, in America we say, “Money talks.”
Former Labor Secretary Robert Reich makes an excellent point at left.
The constant onslaught of distractions coming out of Trump’s mouth is calculated make us give up striving for truth, honesty, and environmental responsibility.
We mustn’t quit.
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