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(33,270 posts)
Sun Dec 18, 2022, 05:42 PM Dec 2022

The Number of Tesla Powerwalls Required That Would Address the Current German Dunkleflaute Event.

Last edited Sun Dec 18, 2022, 09:14 PM - Edit history (1)

As of today, with the wind kicking up there, German carbon intensity has fallen below 600 g CO2/kWh for the first time since November 27, when it was 591 g CO2/kWh. As of this writing 22h:33m, 12/18/22 Berlin Time, the carbon intensity is 520 g CO2/kWh.

The term "Dunkleflaute" is a new German word for extended periods of low wind and limited sunshine, conditions which have existed, as I noted in an earlier post, about a week ago, almost since early November.

The Last 30 Days of German Electricity Production, Carbon Intensity and "Percent Talk" Sources.

For the calculations in this post, I will rely on the 30 day results found on the Electricity Map for Germany for the period from November 15, 2022 to December 14, 2022, during which the average continuous carbon dioxide intensity for Germany was 693 g CO2/kWh.

By contrast, over the same period, the carbon intensity of France, even though its once magnificent nuclear infrastructure is damaged by a dubious decision to defer maintenance and upgrades in order to fund the useless "solar and wind will save us" fantasy, still had a was 137 g CO2/kWh, roughly, in "percent talk" 19.8% that of Germany, or put it another way, German electricity is 505% dirtier than that of France.

Here is a graphic representation of the carbon intensity and sources of primary energy, focusing on the use of filthy and deadly coal, for German electricity generation in the period between November 15, 2022 and December 14, 2022

I will not rely as produce graphics for each energy source as I did in the previously referenced post, but for calculation figures, will rely on the the 30 day period these graphics represent.

It shows that the average continuous power output of German coal plants amounted to 27.8 GW. There are 24 hours in a day so for 30 days, the energy production from coal plants in Germany amounted to 24*30*27.8 = 20,016 GWh. The dangerous fossil fuel natural gas was the second largest producer in that antinuke heaven, Germany, producing 16.6 GW of average continuous power, by a similar calculation to that of coal, producing 11,952 GWh of electricity.

We have people here who still worship the fascist Elon Musk and his slave holding company Tesla, who are always carrying on happily about the industrial installation of Tesla Powerwalls®.

Here are the specifications of Tesla Powerwalls®: Specifications of Powerwalls®.

It is claimed they have a useable capacity of 13.5 kWh after being charged with 14 kWh of electricity, presumably at 25°C, with a putative thermodynamic efficiency - should you choose to believe it - of 96%. The maximum continuous power output is said to be 5 kW. The power requirements to match the combined coal and gas average continuous power of combined German coal and gas over the last 30 days, 44.4 GW would require 8,880,000 million Powerwalls®, to cover each day of Dunkelflaute; for 30 days, given that the wind wasn't blowing that much over that period, 266,400,000 Powerwalls®.

The specifications say that each Powerwall® weighs 114 kg, meaning that 30,369,600,000 kg of Powerwalls® would be required just for Germany.

According to Forbes, 15% of the weight of a Tesla Powerwall is cobalt, mined by Elon's happy Congolese slaves, meaning that the happy Congolese cobalt slaves would be required to mine and isolate 4,555,400 metric tons of cobalt to make Powerwalls® to cover this instance of Dunkleflaute with batteries.

This is 31.63 times as large as the world production of cobalt in 2021 according to the US Geological Survey

I'm sorry!!! I forgot to use "percent talk!" The demand for cobalt to cover month long Dunkleflaute in Germany observed in Nov-Dec 2022 would be 3163% the demand for all the world cobalt supply in 2021.

The calculations are strictly "back of the envelope" but doing calculations of this type can, in my opinion, eliminate the risk of mouthing insane wishful thinking rhetoric.

I trust your preparations for the upcoming holidays are going well.

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The Number of Tesla Powerwalls Required That Would Address the Current German Dunkleflaute Event. (Original Post) NNadir Dec 2022 OP
I truly appreciate what you are doing. I understand more with each post. cachukis Dec 2022 #1


(2,099 posts)
1. I truly appreciate what you are doing. I understand more with each post.
Sun Dec 18, 2022, 08:28 PM
Dec 2022

My plan is to meet with my representatives early next year to inspire legislation.

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