Posted on 02/12/2023 12:22:09 PM PST by Hojczyk
Here’s the math. Suppose that, on a cold winter’s day in 2050, all 3.5 million EVs are connected to the state’s power grid. None are being driven and all are fully charged. And suppose that improved battery technology means each provides an average of 100 kWh of electricity. That’s 350 million kWh in total, or 350 gigawatt-hours (GWh).
Sounds like a lot. According to the most recent forecast prepared by New York Independent System Operator (NYISO), which oversees operation of the state’s electric generating plants and transmission system, total electricity demand in 2050 will be just under 200,000 GWh. That’s an average of 540 GWh per day. So, on an average day these EVs could provide around 15 hours of electricity.
But extra electricity will be most needed on cold, windless, and cloudy winter days, which are not uncommon for New York. According to NYISO, electricity demand on such a day will peak at almost 45 gigawatts. If that load persisted for an entire day, it would be over 1,000 GWh of electricity. Suppose, though, total electricity consumption on a peak day is just 50% higher than an average day, or around 800 GWh. Then those 3.5 million EVs could supply enough back-up electricity for just 10 hours.
In reality, of course, not all of those EVs would be connected to the power grid. Many would be in use. And not all of them would be fully charged. If only 50% of total EVs are available to supply electricity to the grid, they would supply just five hours of back-up.
Moreover, once those batteries were drained, they would have to be recharged. Were a second consecutive cloudy, windless day to occur – again, not uncommon in New York – millions of EVs would sit useless in garages and parking lots.
(Excerpt) Read more at wnd.com ...
The article makes the point that EV battery capacity is small compared to the size of the grid. So I can reason from the article that charging EV’s has a small impact on grid capacity!
The energy density of batteries can never come anywhere near that of “fossil” fuels.
If you charged all the existing batteries on Earth and connected them to the global electrical grid, they would be able to power it for an amazing... eleven seconds.
“Here’s the math. Suppose that, on a cold winter’s day in 2050, all 3.5 million EVs >>>”
Here’s the math. There are now over 2 million now and last year about 500k were sold. Sales are increasing each year.
By 2026 we will have 3.5 million EV’s. Author flunks basic math.
An F-150 battery can power a home for 3 days.
How long can it power the global electrical grid?
...and how many African children in poverty suffered for the elitist leftist feel good theology (note lower case T)?
During their summer power crisis California begged their EV owners not the charge their cars. At some point that will become a demand. Then they will ask for EV owners to sell back electricity when the wind fails. Then that will turn into a demand too.
The problem, not mentioned in the article, is that charge cycles are limited to about 1,000. That's 250,000 miles if an the EV range is 250 miles. That's pretty good, but not good if the EV is tasked to discharge into the grid on a regular basis. That will simply shiorten the life of the vehicle.
It was a colossaly stupid idea. Batteries are not efficient and lose power when idle.
That's fine for an emergency, but not viable on a regular basis (e.g. every time the wind dies). Overuse as a battery will simply reduce the life of the vehicle.
“How long can it power the global electrical grid?”
Longer than your car.
Don't conflate "battery capacity" which is storage, with "grid capacity" which is current. EV owners operate by the ABC rule: Always Be Charging.
In the 7 months I've owned an EV and driven in 17K miles, I've needed on average 25kWh per day to charge it (including burst times like charging it rapidly on the road during trips). For reference, my old home A/C pulled 4 kW when it ran. So 25kWh per day would be like adding a 2nd A/C unit to my house to run 6 hours per day. If every home did that the grid demand would be huge, especially when they tell us every summer that they need folks to not run the A/C as much as we already do.
That's not even getting into the demand from Dims that it all be done with only "renewable" energy, whatever that is.
>It was a colossaly stupid idea.
Still is. Lithium batteries need to go away. There’s not enough Li on the planet to realize the greenies wet dream.
“That’s fine for an emergency, but not viable on a regular basis (e.g. every time the wind dies).”
You are being silly. Our grid will never be solely dependent on wind power and the wind will never suddenly die everywhere.
“If every home did that the grid demand would be huge, “
Every home is not going to do that.
on the premise they are ALL CONTINUOUSLY PLUGGED IN...
40 lb battery to equal the energy in 6 ounces of gas.
Utilities have rejected the use of Lithium batteries due to their low lifetime. Utilities are not constrained by the energy to weight ratio so it is better to use a different battery technology. Given that, what sense does it make to use a car battery? Another stupid idea.
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