In the same article, Climate Expert and Meteorologist Andreas Nyholm claims that if we just build enough batteries, we’re able to store electricity.

But if wind and solar don’t produce anything, then batteries are useless.

In a dunkelflaute we need production, not storage

7/7

In these scenarios, batteries will not help a bit as there is no surplus generation.

0 X 1,000,000 is still zero

Batteries will only be able to cover the residual demand for a couple of hours in the start of a dunkel flaute. Power system simulation of the danish grid in 2033 👇

6/7

Even in Denmark with 11 GW installed wind and solar, batteries will not help a future dunkelflaute.

If we look at the latest dunkelflaute in Europe, we experienced days where the 11GW installed wind and solar production were near 0 in Denmark. Same happened in the surrounding countries.

5/7

According to the article, most battery parks in the US have the capacity to provide power for 1-2 hours

Therefore 20 GW of batteries will deliver ~20-40 GWh

This can cover Denmark’s demand for 4 to 8 hours, with the assumption there has been 20-40 GWh of overproduction to charge the batteries

4/7

The article goes even further:

“In Denmark, our consumption is around 5 gigawatts - this means that the batteries in the US can cover Denmark's consumption four times”

This statement is also misleading, as there is no mention of duration that the batteries will cover Denmark’s demand.

3/7

Don’t get me wrong. Batteries are great.

But comparing the most energy dense way of producing electricity with a storage technology is not only wrong, but also misleading.

Nuclear power plants in the US have a capacity factor of ~93%, why 20 GW on average pumps out 446 GWh daily.

2/7

Coming up 🤭

Tremendous idea 👐